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{{Speciesbox
{{Speciesbox
|image = Achillea millefolium 5Dsr 9042.jpg
|image = Achillea millefolium (bright).jpg
|status = LC
|status = LC
|status_system = IUCN3.1
|status_system = IUCN3.1
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|plus many more names for subspecies, forms, and varieties
|plus many more names for subspecies, forms, and varieties
}}}}
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'''''Achillea millefolium''''', commonly known as '''yarrow''' ({{IPAc-en|ˈ|j|æ|r|oʊ}}) or '''common yarrow''', is a [[flowering plant]] in the [[family (biology)|family]] [[Asteraceae]]. Other common names include '''old man's pepper''', '''devil's nettle''', '''sanguinary''', '''milfoil''', '''soldier's woundwort''', '''nosebleed,'''<ref name="auto">{{cite book |last1=Haragan |first1=Patricia Dalton |title=Weeds of Kentucky and Adjacent States |date=1991 |publisher=The University Press of Kentucky |page=9}}</ref> and '''thousand seal'''.
'''''Achillea millefolium''''', commonly known as '''yarrow''' ({{IPAc-en|ˈ|j|æ|r|oʊ}}) or '''common yarrow''', is a [[flowering plant]] in the family [[Asteraceae]]. Growing to {{convert|1|m|ft|frac=2|abbr=off}} tall, it is characterized by small whitish flowers, a tall stem of fernlike leaves, and a pungent odor.


The plant is [[Native species|native]] to [[temperate regions]] of the [[Northern Hemisphere]] in [[Asia]], [[Europe]], and [[North America]].<ref name="S&S">{{Cite web|url=https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=277129&isprofile=1&basic=yarrow|title=Achillea millefolium - Plant Finder|website=www.missouribotanicalgarden.org}}</ref> It has been introduced as a feed for livestock in [[New Zealand]] and [[Australia]].
The plant is [[Native species|native]] to [[temperate regions]] of the [[Northern Hemisphere]] in [[Asia]], [[Europe]], and [[North America]]. It has been introduced as a feed for livestock in [[New Zealand]] and [[Australia]]. Used by some animals, the plant may have somewhat toxic properties, although historically it has been employed for medicinal purposes.


==Description==
==Description==
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[[File:Koeh-149.jpg|thumb|Illustration from ''[[Köhler's Medicinal Plants]]'' (1887–1898)]]
[[File:Koeh-149.jpg|thumb|Illustration from ''[[Köhler's Medicinal Plants]]'' (1887–1898)]]


''Achillea millefolium'' is an erect, [[herbaceous]], [[perennial plant]] that produces one to several stems {{convert|0.2|-|1|m|in|sigfig=1|abbr=off}} in height, and has a spreading [[rhizomatous]] growth form. Leaves are evenly distributed along the stem, with the leaves near the middle and bottom of the stem being the largest. The leaves have varying degrees of hairiness (pubescence). The [[leaves]] are {{convert|5–20|cm|in|0}} long, [[pinnate|bipinnate or tripinnate]], almost feathery, and arranged spirally on the stems. The leaves are [[cauline]], and more or less clasping,<ref name="efloras">{{eFloras|1|200023010|Achillea millefolium|access-date=31 January 2013}}</ref> being more [[Petiole (botany)|petiolate]] near the base.<ref>{{Cite book|last=Taylor|first=Ronald J.|url=https://www.worldcat.org/oclc/25708726|title=Sagebrush Country: A Wildflower Sanctuary|publisher=Mountain Press Pub. Co|year=1994|isbn=0-87842-280-3|edition=rev.|location=Missoula, MT|pages=158|language=en|oclc=25708726|orig-year=1992}}</ref>
''Achillea millefolium'' is an erect, [[herbaceous]], [[perennial plant]] that produces one to several stems {{convert|0.2|-|1|m|in|sigfig=1|abbr=off}} in height, and has a spreading [[rhizomatous]] growth form. [[Cauline]] and more or less clasping,<ref name="efloras">{{eFloras|1|200023010|Achillea millefolium|access-date=31 January 2013}}</ref> the [[leaves]] appear spirally and evenly along the stem, with the largest and most [[Petiole (botany)|petiolate]] towards the base;<ref>{{Cite book |last=Taylor |first=Ronald J. |url=https://www.worldcat.org/oclc/25708726 |title=Sagebrush Country: A Wildflower Sanctuary |publisher=Mountain Press Pub. Co |year=1994 |isbn=0-87842-280-3 |edition=rev. |location=Missoula, MT |pages=158 |language=en |oclc=25708726 |orig-year=1992}}</ref> they are {{convert|5–20|cm|in|0}} long and [[Fern|fernlike]], divided [[Pinnation|bipinnately or tripinnately]].<ref>{{Cite web |title=Achillea millefolium (Yarrow) |url=http://www.newmoonnursery.com/plant/Achillea-millefolium |access-date=2024-01-11 |website=New Moon Nursery}}</ref>


The [[inflorescence]] has 4 to 9 [[phyllaries]] and contains ray and disk flowers which are white to pink, blooming from March to October.<ref name=":1">{{Cite book |last=Spellenberg |first=Richard |url=https://archive.org/details/nationalaudubons00spel/page/352/ |title=National Audubon Society Field Guide to North American Wildflowers: Western Region |publisher=Knopf |year=2001 |isbn=978-0-375-40233-3 |edition=rev |pages=352 |orig-date=1979}}</ref> There are generally 3 to 8 ray flowers, which are {{Convert|3|mm|frac=8}} long<ref name=":1" /> and ovate to round. The tiny disk flowers range from 10 to 40.<ref name=":1" /> The inflorescence is produced in a flat-topped [[Pseudanthium|capitulum]] cluster and the inflorescences are visited by many insects, featuring a generalized [[pollination]] system.<ref>{{cite journal|doi=10.1111/plb.12328|pmid=25754608|title=Competition for pollinators and intra-communal spectral dissimilarity of flowers|journal=Plant Biology|volume=18|issue=1|pages=56–62|year= 2015|last1=Van Der Kooi|first1=C. J.|last2=Pen|first2=I.|last3=Staal|first3=M.|last4=Stavenga|first4=D. G.|last5=Elzenga|first5=J. T. M.|url=https://www.researchgate.net/publication/273158762}}</ref> The small [[achene]]-like fruits are called cypsela.<ref name=efloras/>
The [[inflorescence]] has 4 to 9 [[phyllaries]] and contains ray and disk flowers which are white to pink, blooming from March to October.<ref name=":1">{{Cite book |last=Spellenberg |first=Richard |url=https://archive.org/details/nationalaudubons00spel/page/352/ |title=National Audubon Society Field Guide to North American Wildflowers: Western Region |publisher=Knopf |year=2001 |isbn=978-0-375-40233-3 |edition=rev |pages=352 |orig-date=1979}}</ref> There are generally 3 to 8 ray flowers, which are {{Convert|3|mm|frac=8}} long<ref name=":1" /> and ovate to round. The tiny disk flowers range from 10 to 40.<ref name=":1" /> The inflorescence is produced in a flat-topped [[Pseudanthium|capitulum]] cluster and the inflorescences are visited by many insects, featuring a generalized [[pollination]] system.<ref>{{cite journal|doi=10.1111/plb.12328|pmid=25754608|title=Competition for pollinators and intra-communal spectral dissimilarity of flowers|journal=Plant Biology|volume=18|issue=1|pages=56–62|year= 2015|last1=Van Der Kooi|first1=C. J.|last2=Pen|first2=I.|last3=Staal|first3=M.|last4=Stavenga|first4=D. G.|last5=Elzenga|first5=J. T. M.|url=https://www.researchgate.net/publication/273158762}}</ref> The small [[achene]]-like fruits are called cypsela.<ref name=efloras/>


The plant has a sweet scent similar to that of [[chrysanthemum]]s,<ref name="S&S"/> so powerful that it may be irritating to some.<ref name=":1" />
The plant has a sweet scent similar to that of [[chrysanthemum]]s,<ref name="S&S">{{Cite web |title=Achillea millefolium - Plant Finder |url=https://www.missouribotanicalgarden.org/PlantFinder/PlantFinderDetails.aspx?taxonid=277129&isprofile=1&basic=yarrow |website=www.missouribotanicalgarden.org}}</ref> so powerful that it may be irritating to some.<ref name=":1" />


=== Chemistry ===
=== Chemistry ===
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==Taxonomy==
==Taxonomy==

=== Subdivision ===
The several [[variety (biology)|varieties]] and [[subspecies]] include:
The several [[variety (biology)|varieties]] and [[subspecies]] include:
*''Achillea millefolium'' subsp. ''millefolium''
*''Achillea millefolium'' subsp. ''millefolium''
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=== Etymology ===
=== Etymology ===
The genus name ''Achillea'' is derived from [[Greek mythology|mythical Greek]] character [[Achilles]], who reportedly carried it with his army to treat battle wounds.<ref name="Chandler1982">{{cite journal |last1=Chandler |last2=Hooper |last3=Harvey |year=1982 |title=Ethnobotany and phytochemistry of yarrow, Achillea millefolium, compositae |journal=Economic Botany |volume=36 |issue=2 |pages=203–223 |doi=10.1007/BF02858720 |s2cid=27867476}}</ref> The [[specific epithet]] ''millefolium'' as well as the common names milfoil and thousand leaf come from the featherlike leaves which are minutely divided.<ref name="Chandler1982" />
The genus name ''Achillea'' is derived from [[Greek mythology|mythical Greek]] character [[Achilles]], who reportedly carried it with his army to treat battle wounds.<ref name="Chandler1982">{{cite journal |last1=Chandler |last2=Hooper |last3=Harvey |year=1982 |title=Ethnobotany and phytochemistry of yarrow, Achillea millefolium, compositae |journal=Economic Botany |volume=36 |issue=2 |pages=203–223 |doi=10.1007/BF02858720 |bibcode=1982EcBot..36..203C |s2cid=27867476}}</ref> The [[specific epithet]] ''millefolium'' comes from the featherlike leaves which are minutely divided.<ref name="Chandler1982" />

The English name yarrow comes from its Saxon ([[Old English]]) name ''gearwe'', which is related to both the Dutch word ''gerw'' (alternately ''yerw'')<ref name="ModernHerbal">{{cite book |author=Grieve |first=Maud |url=https://www.botanical.com/botanical/mgmh/y/yarrow02.html |title=A Modern Herbal |year=1931 |author-link=Maud Grieve}}</ref> and the Old High German word ''garawa''.<ref name="OED">{{cite book |title=Oxford English Dictionary |edition=2nd |chapter=Yarrow}}</ref> In the eastern counties <!-- of Britain presumably? -->it may be called yarroway.<ref name="ModernHerbal" /> In France, it was called '''herbe de'' [[Saint Joseph|St.&nbsp;Joseph]]' after a Christian revision of the Achilles story, in which [[Jesus]] uses the plant to heal his adoptive father. It has also been called 'carpenter's weed' in this regard.<ref name=":2">{{Cite web |last=Taliesin |first=David |date=2017-05-27 |title=Yarrow: Herbe de St. Joseph, Carpenter's Weed |url=https://sabbatsandsabbaths.com/2017/05/26/yarrow-herbe-de-st-joseph-carpenters-weed/ |access-date=2022-07-19 |website=Sabbats and Sabbaths |language=en}}</ref><ref name="ModernHerbal" />

Other names include arrowroot, nose bleed,<ref name="ModernHerbal" /> death flower, eerie, hundred leaved grass, knyghten, old man's mustard, sanguinary,<ref name="ModernHerbal" /> seven-year's love, snake's grass, soldier, and ''gordaldo''.

In [[New Mexico]] and southern [[Colorado]], it is called ''plumajillo'' (Spanish for 'little feather') from its leaf shape and texture.


==Distribution and habitat==
==Distribution and habitat==
[[File:Achillea millefolium 4.jpg|thumb|upright=1.5|[[Wenatchee Mountains|Wenatchee Foothills]], [[Chelan County, Washington]]]]
Yarrow is [[Native species|native]] to [[temperate regions]] of the [[Northern Hemisphere]] in [[Asia]], [[Europe]], and [[North America]].<ref name="S&S" />[[File:Achillea millefolium 4.jpg|thumb|upright=1.5|[[Wenatchee Mountains|Wenatchee Foothills]], [[Chelan County, Washington]]]]

Yarrow grows from sea level to {{convert|3500|m|ft|abbr=on}} in elevation. Common yarrow is frequently found in the mildly disturbed soil of grasslands and open forests. Active growth occurs in the spring.<ref name="S&S"/><ref name="efloras"/>


The plant grows from sea level to {{convert|3500|m|ft|abbr=on}} in elevation. Common yarrow is frequently found in the mildly disturbed soil of grasslands and open forests. Active growth occurs in the spring.<ref name="S&S"/><ref name="efloras"/>
The plant is native to Eurasia and is found widely from the UK to China.


In North America, both native and introduced genotypes, and both [[diploid]] and [[polyploid]] plants are found.<ref>{{cite web|url= http://www.herbarium.unc.edu/flora.htm|title=Flora of the Carolinas, Virginia, and Georgia, and Surrounding Areas|author=Alan S. Weakley|date=April 2008}}</ref> It is found in every habitat throughout California except the Colorado and [[Mojave Desert]]s.<ref>{{Cite web |title=UC/JEPS: Jepson Manual treatment for ACHILLEA millefolium |url=https://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment?Achillea%20millefolium |access-date=2023-12-19 |website=ucjeps.berkeley.edu}}</ref><ref>{{Cite web |title=Achillea millefolium Calflora |url=https://www.calflora.org/app/taxon?crn=61 |access-date=2023-12-19 |website=www.calflora.org}}</ref> Common yarrow produces an average yield of {{convert|43000|/acre|/ha|order=flip|adj=pre|plants}}, with a total dry weight of {{convert|10500|lb/acre|kg/ha|order=flip|abbr=in}}.<ref>{{Cite web |url=http://www.ksre.ksu.edu/bookstore/pubs/mf2634.pdf |title=A Grower's Guide_Yarrow_Achillea millefolium |access-date=27 August 2013 |archive-url=https://web.archive.org/web/20131007014225/http://www.ksre.ksu.edu/bookstore/pubs/mf2634.pdf |archive-date=7 October 2013 |url-status=dead}}</ref>
In North America, both native and introduced genotypes, and both [[diploid]] and [[polyploid]] plants are found.<ref>{{cite web|url= http://www.herbarium.unc.edu/flora.htm|title=Flora of the Carolinas, Virginia, and Georgia, and Surrounding Areas|author=Alan S. Weakley|date=April 2008}}</ref> It is found in every habitat throughout California except the Colorado and [[Mojave Desert]]s.<ref>{{Cite web |title=UC/JEPS: Jepson Manual treatment for ACHILLEA millefolium |url=https://ucjeps.berkeley.edu/cgi-bin/get_JM_treatment?Achillea%20millefolium |access-date=2023-12-19 |website=ucjeps.berkeley.edu}}</ref><ref>{{Cite web |title=Achillea millefolium Calflora |url=https://www.calflora.org/app/taxon?crn=61 |access-date=2023-12-19 |website=www.calflora.org}}</ref> Common yarrow produces an average yield of {{convert|43000|/acre|/ha|order=flip|adj=pre|plants}}, with a total dry weight of {{convert|10500|lb/acre|kg/ha|order=flip|abbr=in}}.<ref>{{Cite web |url=http://www.ksre.ksu.edu/bookstore/pubs/mf2634.pdf |title=A Grower's Guide_Yarrow_Achillea millefolium |access-date=27 August 2013 |archive-url=https://web.archive.org/web/20131007014225/http://www.ksre.ksu.edu/bookstore/pubs/mf2634.pdf |archive-date=7 October 2013 |url-status=dead}}</ref>
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=== Insects ===
=== Insects ===
''Achillea millefolium'' is a food source for many species of insects, although is not particularly attractive to [[ladybird]]s.<ref>{{cite journal |last1=Pollier |first1=Anna |last2=Tricault |first2=Yann |last3=Plantegenest |first3=Manuel |last4=Bischoff |first4=Armin |date=February 2019 |title=Sowing of margin strips rich in floral resources improves herbivore control in adjacent crop fields |journal=Agricultural and Forest Entomology |volume=21 |issue=1 |pages=119–129 |doi=10.1111/afe.12318|url=https://hal-agrocampus-ouest.archives-ouvertes.fr/hal-02277259/file/Pollier%20et%20al.%202019HAL.pdf }}</ref>
{{see also|List of Lepidoptera that feed on Achillea}}
''Achillea millefolium'' is a food source for many species of insects.


; Moths
; Moths
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=== Cultivars ===
=== Cultivars ===
{{anchor|yarrow lawn}}
The species use in traditional gardens has generally been superseded by [[cultivar]]s with specific 'improved' qualities.<ref>{{cite book|title=RHS A-Z encyclopedia of garden plants|year=2008|publisher=Dorling Kindersley|location=United Kingdom|isbn=978-1-4053-3296-5|page=1136}}</ref> Some are used as drought-tolerant [[lawn]] replacements, with periodic mowing.<ref>{{Cite web |title=San Marcos Growers >The Yarrow Lawn |url=https://www.smgrowers.com/gardens/yarrow.asp |access-date=2023-12-19 |website=www.smgrowers.com}}</ref> The many different ornamental cultivars include: 'Paprika',<ref>{{cite web|url=http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/n710/achillea-millefolium-paprika.aspx|title=Missouri Botanical Garden horticultural treatment: ''Achillea millefolium'' 'Paprika'|publisher=Missouribotanicalgarden.org|access-date=19 May 2013}}</ref> 'Cerise Queen', 'Red Beauty',<ref>{{cite web|url=http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/c653/achillea-millefolium-red-beauty.aspx|title=Missouri Botanical Garden horticultural treatment: ''Achillea millefolium'' 'Red Beauty'|publisher=Missouribotanicalgarden.org|access-date=19 May 2013}}</ref> 'Red Velvet',<ref>{{Cite web|url=http://www.rhs.org.uk/plants/161992/achillea-millefolium-red-velvet/details|title=Achillea millefolium 'Red Velvet' {{pipe}} yarrow 'Red Velvet' Herbaceous Perennial/RHS Gardening|website=www.rhs.org.uk}}</ref> 'Saucy Seduction', 'Strawberry Seduction' (red), 'Island Pink' (pink),<ref>{{cite web|author=Bert Wilson|url=http://www.laspilitas.com/nature-of-california/plants/achillea-millefolium-rosea-island-pink|title=Las Pilitas Nursery: ''Achillea millefolium rosea'' Island Pink (Pink Yarrow)|publisher=Laspilitas.com|date=8 January 2012|access-date=19 May 2013}}</ref> 'Calistoga' (white),<ref>{{cite web|url=http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_'Calistoga'|title=California Natives Wiki: ''Achillea millefolium'' 'Calistoga'|publisher=Theodorepayne.org|date=19 August 2010|access-date=19 May 2013|archive-url=https://web.archive.org/web/20150321073622/http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_%27Calistoga%27|archive-date=21 March 2015|url-status=dead}}</ref> and 'Sonoma Coast' (white).<ref>{{cite web|url=http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_'Sonoma_Coast'|title=California Natives Wiki: ''Achillea millefolium'' 'Sonoma Coast'|publisher=Theodorepayne.org|date=19 August 2010|access-date=19 May 2013|archive-url=https://web.archive.org/web/20150321183610/http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_%27Sonoma_Coast%27|archive-date=21 March 2015|url-status=dead}}</ref> The following are recipients of the [[Royal Horticultural Society]]'s [[Award of Garden Merit]]:
The species use in traditional gardens has generally been superseded by [[cultivar]]s with specific 'improved' qualities.<ref>{{cite book|title=RHS A-Z encyclopedia of garden plants|year=2008|publisher=Dorling Kindersley|location=United Kingdom|isbn=978-1-4053-3296-5|page=1136}}</ref> Some are used as drought-tolerant [[lawn]]s, with periodic mowing.<ref>{{Cite web |title=San Marcos Growers >The Yarrow Lawn |url=https://www.smgrowers.com/gardens/yarrow.asp |access-date=2023-12-19 |website=www.smgrowers.com}}</ref><ref>{{cite web |last1=Singer |first1=Carolyn |title=Rethinking lawn with native yarrow |url=https://www.theunion.com/entertainment/rethinking-lawn-with-native-yarrow/article_c2754afa-18ed-5cf8-b73e-f3c893366f36.html |website=theunion.com|date=3 May 2015 }}</ref><ref>{{cite web |last1=Kleinrock |first1=Scott |title=If Not Lawn, Then What? |url=https://huntington.org/verso/if-not-lawn-then-what |website=The Huntington}}</ref><ref>{{cite web |title=Creeping Yarrow (Achillea millefolium) for Lawn |url=https://www.patwelsh.com/lawns-grass/creeping-yarrow-achillea-millefolium-for-lawn/ |website=patwelsh.com}}</ref> The many different ornamental cultivars include: 'Paprika',<ref>{{cite web|url=http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/n710/achillea-millefolium-paprika.aspx|title=Missouri Botanical Garden horticultural treatment: ''Achillea millefolium'' 'Paprika'|publisher=Missouribotanicalgarden.org|access-date=19 May 2013}}</ref> 'Cerise Queen', 'Red Beauty',<ref>{{cite web|url=http://www.missouribotanicalgarden.org/gardens-gardening/your-garden/plant-finder/plant-details/kc/c653/achillea-millefolium-red-beauty.aspx|title=Missouri Botanical Garden horticultural treatment: ''Achillea millefolium'' 'Red Beauty'|publisher=Missouribotanicalgarden.org|access-date=19 May 2013}}</ref> 'Red Velvet',<ref>{{Cite web|url=http://www.rhs.org.uk/plants/161992/achillea-millefolium-red-velvet/details|title=Achillea millefolium 'Red Velvet' {{pipe}} yarrow 'Red Velvet' Herbaceous Perennial/RHS Gardening|website=www.rhs.org.uk}}</ref> 'Saucy Seduction', 'Strawberry Seduction' (red), 'Island Pink' (pink),<ref>{{cite web|author=Bert Wilson|url=http://www.laspilitas.com/nature-of-california/plants/achillea-millefolium-rosea-island-pink|title=Las Pilitas Nursery: ''Achillea millefolium rosea'' Island Pink (Pink Yarrow)|publisher=Laspilitas.com|date=8 January 2012|access-date=19 May 2013}}</ref> 'Calistoga' (white),<ref>{{cite web|url=http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_'Calistoga'|title=California Natives Wiki: ''Achillea millefolium'' 'Calistoga'|publisher=Theodorepayne.org|date=19 August 2010|access-date=19 May 2013|archive-url=https://web.archive.org/web/20150321073622/http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_%27Calistoga%27|archive-date=21 March 2015|url-status=dead}}</ref> and 'Sonoma Coast' (white).<ref>{{cite web|url=http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_'Sonoma_Coast'|title=California Natives Wiki: ''Achillea millefolium'' 'Sonoma Coast'|publisher=Theodorepayne.org|date=19 August 2010|access-date=19 May 2013|archive-url=https://web.archive.org/web/20150321183610/http://www.theodorepayne.org/mediawiki/index.php?title=Achillea_millefolium_%27Sonoma_Coast%27|archive-date=21 March 2015|url-status=dead}}</ref> The following are recipients of the [[Royal Horticultural Society]]'s [[Award of Garden Merit]]:
* 'Credo'<ref>{{cite web | url = https://www.rhs.org.uk/Plants/86956/Achillea-Credo/Details
* 'Credo'<ref>{{cite web | url = https://www.rhs.org.uk/Plants/86956/Achillea-Credo/Details
| title = ''Achillea'' 'Credo' | publisher = RHS | access-date = 27 February 2020}}</ref>
| title = ''Achillea'' 'Credo' | publisher = RHS | access-date = 27 February 2020}}</ref>
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According to the [[American Society for the Prevention of Cruelty to Animals]], yarrow is toxic to dogs, cats, and horses, causing increased urination, vomiting, diarrhea and dermatitis.<ref>{{cite web |title=Toxic and Non-Toxic Plants: Yarrow |url=http://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants/yarrow |publisher=ASPCA}}</ref>
According to the [[American Society for the Prevention of Cruelty to Animals]], yarrow is toxic to dogs, cats, and horses, causing increased urination, vomiting, diarrhea and dermatitis.<ref>{{cite web |title=Toxic and Non-Toxic Plants: Yarrow |url=http://www.aspca.org/pet-care/animal-poison-control/toxic-and-non-toxic-plants/yarrow |publisher=ASPCA}}</ref>
When consumed by cows, an unfavorable flavor is given to their milk.<ref>{{Cite book|last=Reiner|first=Ralph E.|title=Introducing the Flowering Beauty of Glacier National Park and the Majestic High Rockies|publisher=Glacier Park, Inc.|year=1969|pages=16}}</ref> In a standard [[rodent model]] for reproductive toxicity, aqueous extracts of yarrow produced a significant increase in the percentage of abnormal sperm.<ref>{{cite journal |vauthors=Dalsenter P, Cavalcanti A, Andrade A, Araújo S, Marques M |year=2004 |title=Reproductive evaluation of aqueous crude extract of Achillea millefolium L. (Asteraceae) in Wistar rats |journal=Reprod Toxicol |volume=18 |issue=6 |pages=819–23 |doi=10.1016/j.reprotox.2004.04.011 |pmid=15279880}}</ref>
When consumed by cows, an unfavorable flavor is given to their milk.<ref>{{Cite book|last=Reiner|first=Ralph E.|title=Introducing the Flowering Beauty of Glacier National Park and the Majestic High Rockies|publisher=Glacier Park, Inc.|year=1969|pages=16}}</ref> In a standard [[rodent model]] for reproductive toxicity, aqueous extracts of yarrow produced a significant increase in the percentage of abnormal sperm.<ref>{{cite journal |vauthors=Dalsenter P, Cavalcanti A, Andrade A, Araújo S, Marques M |year=2004 |title=Reproductive evaluation of aqueous crude extract of Achillea millefolium L. (Asteraceae) in Wistar rats |journal=Reprod Toxicol |volume=18 |issue=6 |pages=819–23 |doi=10.1016/j.reprotox.2004.04.011 |pmid=15279880|bibcode=2004RepTx..18..819D }}</ref>


== Uses ==
== Uses ==
{{More|Yarrow oil}}
{{More|Yarrow oil}}
{{Anchor|Yarrow salve}}
{{Anchor|Yarrow salve}}
[[File:YarrowEssentialOil.png|thumb|upright|Yarrow essential oil]]
[[File:YarrowEssentialOil.png|thumb|upright|Essential oil]]
[[File:Achillea millefolium - leaves close-up (18736673602).jpg|thumb|Yarrow can produce a dense mat of soft leaves.]]


=== Traditional medicine ===
=== Traditional medicine ===
{{see also|List of plants in The English Physitian}}
{{see also|List of plants in The English Physitian}}


''A. millefolium'' was used in [[traditional medicine]], in part due to its [[astringent]] properties and the mild [[laxative]] effect of its leaves.<ref name="ModernHerbal" /><ref>{{Cite web |title=Common Yarrow |url=https://nathistoc.bio.uci.edu/Plants%20of%20Upper%20Newport%20Bay%20(Robert%20De%20Ruff)/Asteraceae/Achillea%20millefolium.htm#:~:text=A%20tonic%20brew%20for%20loss,conditions%20of%20the%20gastrointestinal%20tract. |access-date=2022-07-21 |website=Natural History of Orange County, California}}</ref> It has been used since ancient times to heal wounds and stop bleeding, and in the sixteenth century the crushed leaves were used to stop nosebleeds.<ref name="auto"/> Yarrow and its North American varieties were traditionally used by many [[Native Americans of the United States|Native American]] nations.<ref name="dearborn">{{Cite web |title=BRIT - Native American Ethnobotany Database |url=http://naeb.brit.org/uses/species/38/ |access-date=2023-12-19 |website=naeb.brit.org}}</ref> The [[Navajo people|Navajo]] historically considered it a "life medicine" and chewed the plant for toothaches and used its infusions for earaches. The [[Miwok]] in California used the plant as an [[analgesic]] and [[head cold]] remedy.<ref name="dearborn" /> Native American nations used the plant for healing cuts and abrasions, relief from earaches and throat infections, as well as for an [[eyewash]].<ref>{{cite book |last1=Faran |first1=Mina |title=Medicinal herbs in Modern Medicine (ṣimḥei marpé bir'fū'ah ha-modernīt) |last2=Tcherni |first2=Anna |date=1997 |publisher=Akademon (Hebrew University of Jerusalem) |isbn=965-350-068-6 |volume=1 |location=Jerusalem |page=242 |language=he |oclc=233179155}}, s.v. ''Achillea millefolium''</ref> Common yarrow was used by [[Plains Indians|Plains indigenous peoples]] to reduce pain or fever and aid sleep.<ref name="dearborn" />
''A. millefolium'' was used in [[traditional medicine]], in part due to its [[astringent]] properties and the mild [[laxative]] effect of its leaves.<ref name="ModernHerbal">{{cite book |author=Grieve |first=Maud |url=https://www.botanical.com/botanical/mgmh/y/yarrow02.html |title=A Modern Herbal |year=1931 |author-link=Maud Grieve}}</ref><ref>{{Cite web |title=Common Yarrow |url=https://nathistoc.bio.uci.edu/Plants%20of%20Upper%20Newport%20Bay%20(Robert%20De%20Ruff)/Asteraceae/Achillea%20millefolium.htm#:~:text=A%20tonic%20brew%20for%20loss,conditions%20of%20the%20gastrointestinal%20tract. |access-date=2022-07-21 |website=Natural History of Orange County, California}}</ref> It has been used since ancient times to heal wounds and stop bleeding, and in the sixteenth century the crushed leaves were used to stop nosebleeds.<ref name="auto">{{cite book |last1=Haragan |first1=Patricia Dalton |title=Weeds of Kentucky and Adjacent States |date=1991 |publisher=The University Press of Kentucky |page=9}}</ref> Yarrow and its North American varieties were traditionally used by many [[Native Americans of the United States|Native American]] nations.<ref name="dearborn">{{Cite web |title=BRIT - Native American Ethnobotany Database |url=http://naeb.brit.org/uses/species/38/ |access-date=2023-12-19 |website=naeb.brit.org}}</ref> The [[Navajo people|Navajo]] historically considered it a "life medicine" and chewed the plant for toothaches and used its infusions for earaches. The [[Miwok]] in California used the plant as an [[analgesic]] and [[head cold]] remedy.<ref name="dearborn" /> Native American nations used the plant for healing cuts and abrasions, relief from earaches and throat infections, as well as for an [[eyewash]].<ref>{{cite book |last1=Faran |first1=Mina |title=Medicinal herbs in Modern Medicine (ṣimḥei marpé bir'fū'ah ha-modernīt) |last2=Tcherni |first2=Anna |date=1997 |publisher=Akademon (Hebrew University of Jerusalem) |isbn=965-350-068-6 |volume=1 |location=Jerusalem |page=242 |language=he |oclc=233179155}}, s.v. ''Achillea millefolium''</ref> Common yarrow was used by [[Plains Indians|Plains indigenous peoples]] to reduce pain or fever and aid sleep.<ref name="dearborn" />


In the early 20th century, some [[Ojibwe]] people used a [[decoction]] of yarrow leaves on hot stones and inhaled it to treat [[headache]]s,<ref>Densmore, Frances, 1928, Uses of Plants by the Chippewa Indians, SI-BAE Annual Report #44:273–379, page 336</ref> or applied decoctions of the root onto skin for its stimulating effect.<ref>Densmore, Frances, 1928, Uses of Plants by the Chippewa Indians, SI-BAE Annual Report #44:273–379, p.&nbsp;350</ref>
In the early 20th century, some [[Ojibwe]] people used a [[decoction]] of yarrow leaves on hot stones and inhaled it to treat [[headache]]s,<ref>Densmore, Frances, 1928, Uses of Plants by the Chippewa Indians, SI-BAE Annual Report #44:273–379, page 336</ref> or applied decoctions of the root onto skin for its stimulating effect.<ref>Densmore, Frances, 1928, Uses of Plants by the Chippewa Indians, SI-BAE Annual Report #44:273–379, p.&nbsp;350</ref>
Line 200: Line 196:
The entire plant is reportedly edible and nutritious,<ref name=":3">{{Cite web |last=Tjandra |first=Cornelia |date=2019-05-16 |title=Yarrow, a Delicious and Nutritious Panacea |url=https://eattheplanet.org/yarrow-a-delicious-and-nutritious-panacea/ |access-date=2022-07-21 |website=Eat The Planet |language=en-US}}</ref> but it is advised not to consume much.<ref name="ewf">{{Cite web |title=Common Yarrow: Pictures, Flowers, Leaves & Identification {{!}} Achillea millefolium |url=https://www.ediblewildfood.com/common-yarrow.aspx |access-date=2022-07-01 |website=Edible Wild Food}}</ref> The foliage is pungent; both its leaves and flowers are bitter and astringent.<ref name="ModernHerbal" /> The leaves can be eaten young; raw, they can be added to salad.<ref name="ewf" /> The leaves, with an [[anise]]ed-grass flavour, can be brewed as tea.<ref>{{Cite book|last=Benoliel|first=Doug|url=https://www.worldcat.org/oclc/668195076|title=Northwest Foraging: The Classic Guide to Edible Plants of the Pacific Northwest|publisher=Skipstone|year=2011|isbn=978-1-59485-366-1|edition=Rev. and updated|location=Seattle, WA|pages=179|oclc=668195076}}</ref>
The entire plant is reportedly edible and nutritious,<ref name=":3">{{Cite web |last=Tjandra |first=Cornelia |date=2019-05-16 |title=Yarrow, a Delicious and Nutritious Panacea |url=https://eattheplanet.org/yarrow-a-delicious-and-nutritious-panacea/ |access-date=2022-07-21 |website=Eat The Planet |language=en-US}}</ref> but it is advised not to consume much.<ref name="ewf">{{Cite web |title=Common Yarrow: Pictures, Flowers, Leaves & Identification {{!}} Achillea millefolium |url=https://www.ediblewildfood.com/common-yarrow.aspx |access-date=2022-07-01 |website=Edible Wild Food}}</ref> The foliage is pungent; both its leaves and flowers are bitter and astringent.<ref name="ModernHerbal" /> The leaves can be eaten young; raw, they can be added to salad.<ref name="ewf" /> The leaves, with an [[anise]]ed-grass flavour, can be brewed as tea.<ref>{{Cite book|last=Benoliel|first=Doug|url=https://www.worldcat.org/oclc/668195076|title=Northwest Foraging: The Classic Guide to Edible Plants of the Pacific Northwest|publisher=Skipstone|year=2011|isbn=978-1-59485-366-1|edition=Rev. and updated|location=Seattle, WA|pages=179|oclc=668195076}}</ref>


In the [[Middle Ages]], yarrow was part of a [[Adjuncts|herbal mixture]] known as [[gruit]] used in the flavoring of beer prior to the use of [[hops]].<ref>{{cite web | url=http://thornews.com/2015/10/04/this-is-genuine-viking-beer/ | title=This Is Genuine Viking Beer | publisher=ThorNews | date=5 October 2015 | access-date=5 October 2015 | author=Lanneskog, Thor}}</ref> The flowers and leaves are used in making some [[liquor]]s and [[bitters]].<ref name="S&S" />
In the [[Middle Ages]], yarrow was part of a [[Adjuncts|herbal mixture]] known as [[gruit]] used in the flavoring of [[beer]] prior to the use of [[hops]].<ref>{{cite web | url=http://thornews.com/2015/10/04/this-is-genuine-viking-beer/ | title=This Is Genuine Viking Beer | publisher=ThorNews | date=5 October 2015 | access-date=5 October 2015 | author=Lanneskog, Thor}}</ref> The flowers and leaves are used in making some [[liquor]]s and [[bitters]].<ref name="S&S" />


=== Other uses ===
=== Other uses ===
Yarrow is considered an especially useful [[companion plant]], [[Insectary plant|attracting]] [[beneficial insect]]s and repelling some pests. It attracts predatory wasps, which drink the nectar and then use insect pests as food for their larvae. Similarly, it attracts [[ladybird]]s and [[hoverflies]].<ref name="lbj" />
Yarrow is used as a [[companion plant]], [[Insectary plant|attracting]] some [[beneficial insect]]s<ref>{{cite journal |last1=Fountain |first1=Michelle T. |date=18 March 2022 |title=Impacts of Wildflower Interventions on Beneficial Insects in Fruit Crops: A Review |journal=Insects |volume=13 |issue=3 |pages=304 |doi=10.3390/insects13030304|doi-access=free |pmid=35323602 |pmc=8955123 }}</ref> and repelling some pests.{{Citation needed|date=August 2024}}


''A. millefolium'' can be planted to combat soil [[erosion]] due to the plant's [[Drought tolerance|resistance to drought]]. Before the arrival of monocultures of ryegrass, both grass and pasture contained ''A.&nbsp;millefolium'' at a density of about 0.3&nbsp;kg/ha.{{cn|date=May 2021}} One factor for its use in grass mixtures was its deep roots, with leaves rich in minerals, minimizing mineral deficiencies in ruminant feed. It was introduced into [[New Zealand]] as a drought-tolerant pasture.<ref name=":0" />
''A. millefolium'' can be planted to combat soil [[erosion]] due to the plant's [[Drought tolerance|resistance to drought]]. Before the arrival of monocultures of ryegrass, both grass and pasture contained ''A.&nbsp;millefolium'' at a density of about 0.3&nbsp;kg/ha.{{cn|date=May 2021}} One factor for its use in grass mixtures was its deep roots, with leaves rich in minerals, minimizing mineral deficiencies in ruminant feed. It was introduced into [[New Zealand]] as a drought-tolerant pasture.<ref name=":0" />


Some [[pick-up sticks]] are made of yarrow.
Some [[pick-up sticks]] are made of yarrow.{{Citation needed|date=August 2024}}


Yarrow can be used for dying wool as it contains [[apigenin]] and [[luteolin]]. Depending on the mordant the color may be green to yellow.<ref name="Kiumarsi2009">{{cite journal |last1=Kiumarsi |last2=Abomahboub |last3=Rashedi |last4=Parvinzadeh |year=2009 |title=''Achillea Millefolium'', a New Source of Natural Dye for Wool Dyeing |url=https://www.sid.ir/en/journal/ViewPaper.aspx?ID=226555 |journal=Progress in Color, Colorants and Coatings |volume=2 |issue=2 |pages=87–93}}</ref>
Yarrow can be used for dying wool as it contains [[apigenin]] and [[luteolin]]. Depending on the mordant the color may be green to yellow.<ref name="Kiumarsi2009">{{cite journal |last1=Kiumarsi |last2=Abomahboub |last3=Rashedi |last4=Parvinzadeh |year=2009 |title=''Achillea Millefolium'', a New Source of Natural Dye for Wool Dyeing |url=https://www.sid.ir/en/journal/ViewPaper.aspx?ID=226555 |journal=Progress in Color, Colorants and Coatings |volume=2 |issue=2 |pages=87–93}}</ref>


== Culture ==
== Culture ==
Yarrow has been found with [[Neanderthal behavior|Neanderthal burials]], suggesting its association with human species dates to at least 60,000 years ago.<ref name="auto"/>
Yarrow has been found with Neanderthal burials, suggesting its association with human species dates to at least 60,000 years ago.<ref name="auto"/> In antiquity, the plant was known as ''herba militaris'' for its use in stanching the flow of blood from wounds.<ref name="D&D">Dodson & Dunmire, 2007, ''Mountain Wildflowers of the Southern Rockies'', UNM Press, {{ISBN|978-0-8263-4244-7}}</ref> Other names implying its historical use in healing—particularly in the military—include bloodwort, knight's milfoil, staunchweed, and, from its use in the [[United States Civil War]], soldier's woundwort.<ref name="Chandler1982" /> Its use in either starting or stopping nosebleeds led to the common name nosebleed.<ref name="ModernHerbal" /><ref name="Folklorev1">{{cite book |last1=Britten |first1=James |url=https://archive.org/details/folklorerecord01folkuoft |title=Folk-Lore Record |publisher=Folklore Enterprises, Ltd., Taylor & Francis |year=1878 |volume=1 |pages=[https://archive.org/details/folklorerecord01folkuoft/page/32/ 32], [https://archive.org/details/folklorerecord01folkuoft/page/156/ 156–157] |doi=10.1080/17441994.1878.10602548 |jstor=1252356}}</ref> For its association with the [[Abrahamic]] [[devil]] it was called bad man's plaything, devil's nettle, and devil's plaything.<ref name="ModernHerbal" /> It was called old man's pepper due to its pungent flavor, while the name field hop came from its use in beer making in Sweden.<ref name="ModernHerbal" />

=== Greece ===
In the [[Classical Greece|Classical Greek]] epic ''[[Iliad]]'', [[Homer]] tells of the centaur [[Chiron]], who conveyed herbal secrets to his human pupils and taught Achilles to use yarrow on the [[Trojan War|battlegrounds of Troy]].<ref>{{cite book |author=Homer |title=Iliad |title-link=Iliad |pages=11.828–832 |author-link=Homer}}</ref> The genus name ''Achillea'' is inspired by the alleged use of the herb by Achilles to treat his soldiers' wounds.<ref name="auto"/>


=== China ===
=== China ===
[[File:Yarrow stalks for I Ching.JPG|thumb|upright|A bunch of 50 yarrow ''A.&nbsp;millefolium'' subsp. ''millefolium'' var. ''millefolium'' stalks, used for ''[[I&nbsp;Ching]]'' divination]]
[[File:Yarrow stalks for I Ching.JPG|thumb|upright|A bunch of 50 yarrow ''A.&nbsp;millefolium'' subsp. ''millefolium'' var. ''millefolium'' stalks, used for ''[[I&nbsp;Ching]]'' divination]]


Yarrow and [[tortoiseshell]] are considered to be lucky in [[Chinese tradition]].<ref>{{cite web |title=Chinese Superstitions |url=http://www.chinatownconnection.com/chinese-superstitions.htm |access-date=19 May 2013 |publisher=Chinatownconnection.com |archive-date=24 February 2006 |archive-url=https://web.archive.org/web/20060224002923/http://www.chinatownconnection.com/chinese-superstitions.htm |url-status=dead }}</ref>
Yarrow and [[tortoiseshell]] are considered to be lucky in [[Chinese tradition]].<ref>{{cite web |title=Chinese Superstitions |url=http://www.chinatownconnection.com/chinese-superstitions.htm |url-status=dead |archive-url=https://web.archive.org/web/20060224002923/http://www.chinatownconnection.com/chinese-superstitions.htm |archive-date=24 February 2006 |access-date=19 May 2013 |publisher=Chinatownconnection.com}}</ref>


The stalks are dried and used as a randomising agent in [[I&nbsp;Ching divination]].<ref>{{cite web |title=Introduction to the I Ching – By Richard Wilhelm |url=http://www.iging.com/intro/introduc.htm |access-date=19 May 2013 |publisher=Iging.com}}</ref>
The stalks are dried and used as a randomising agent in [[I&nbsp;Ching divination]].<ref>{{cite web |title=Introduction to the I Ching – By Richard Wilhelm |url=http://www.iging.com/intro/introduc.htm |access-date=19 May 2013 |publisher=Iging.com}}</ref>


=== Ireland and Great Britain ===
=== Western world ===
In [[Classical antiquity|antiquity]], the plant was known as ''herba militaris'' for its use in stanching the flow of blood from wounds.<ref name="D&D">Dodson & Dunmire, 2007, ''Mountain Wildflowers of the Southern Rockies'', UNM Press, {{ISBN|978-0-8263-4244-7}}</ref> In the [[Classical Greece|Classical Greek]] epic ''[[Iliad]]'', [[Homer]] tells of the centaur [[Chiron]], who conveyed herbal secrets to his human pupils and taught Achilles to use yarrow on the [[Trojan War|battlegrounds of Troy]].<ref>{{cite book |author=Homer |title=Iliad |title-link=Iliad |pages=11.828–832 |author-link=Homer}}</ref> The genus name ''Achillea'' is inspired by the alleged use of the herb by Achilles to treat his soldiers' wounds.<ref name="auto" /> Other names implying the plant's historical use in healing—particularly in the military—include ''bloodwort'', ''knight's milfoil'', ''staunchweed'', and, from its use in the [[United States Civil War]], ''soldier's woundwort''.<ref name="Chandler1982" /> Its use in either starting or stopping nosebleeds led to the common name ''nosebleed''.<ref name="ModernHerbal" /><ref name="Folklorev1">{{cite book |last1=Britten |first1=James |url=https://archive.org/details/folklorerecord01folkuoft |title=Folk-Lore Record |publisher=Folklore Enterprises, Ltd., Taylor & Francis |year=1878 |volume=1 |pages=[https://archive.org/details/folklorerecord01folkuoft/page/32/ 32], [https://archive.org/details/folklorerecord01folkuoft/page/156/ 156–157] |doi=10.1080/17441994.1878.10602548 |jstor=1252356}}</ref>
In the [[Hebrides]] a leaf held against the eyes was sometimes believed to give [[second sight]].<ref name="Baker">{{Cite book |author=Margaret Baker |title=Discovering the Folklore of Plants |date=October 1971 |publisher=Shire Publications |edition=revised |id=SBN 852630806}}</ref>

The English name ''yarrow'' comes from its Saxon ([[Old English]]) name ''gearwe'', which is related to both the Dutch word ''gerw'' (alternately ''yerw'')<ref name="ModernHerbal" /> and the Old High German word ''garawa''.<ref name="OED">{{cite book |title=Oxford English Dictionary |edition=2nd |chapter=Yarrow}}</ref> In the eastern counties{{What|reason=Of England or Europe?|date=January 2024}} it may be called yarroway.<ref name="ModernHerbal" /> It was called ''old man's pepper'' due to its pungent flavor, while the name ''field hop'' came from its use in beer making in Sweden.<ref name="ModernHerbal" />

In the [[Hebrides]], a leaf held against the eyes was sometimes believed to give [[second sight]].<ref name="Baker">{{Cite book |author=Margaret Baker |title=Discovering the Folklore of Plants |date=October 1971 |publisher=Shire Publications |edition=revised |id=SBN 852630806}}</ref> In the [[witchcraft trial]] of [[Elspeth Reoch]] in March 1616, she was alleged to have plucked "melefour", thought to be another name for yarrow, and said "''In nomine Patris, Fiili, et Spiritus Sancti''" to become able to cure distemper (disorders of the [[four humours]]) and impart the faculty of prediction.<ref name="Folklorev1" /> For its association with the [[Abrahamic]] [[devil]] it was called ''bad man's plaything'', ''devil's nettle'', and ''devil's plaything''.<ref name="ModernHerbal" /> Yarrow was thought to bring luck due to being, according to one woman cited by [[James Britten]] ({{Circa|1878}}), "the first herb our Saviour put in His hand when a child".<ref name="Folklorev1" /> This is apparently a corruption of the Achilles myth<ref name=":2">{{Cite web |last=Taliesin |first=David |date=2017-05-27 |title=Yarrow: Herbe de St. Joseph, Carpenter's Weed |url=https://sabbatsandsabbaths.com/2017/05/26/yarrow-herbe-de-st-joseph-carpenters-weed/ |access-date=2022-07-19 |website=Sabbats and Sabbaths |language=en}}</ref> in which [[Jesus]] uses the plant to heal his adoptive father. For this reason, in France, it was called '''herbe de'' [[Saint Joseph|St.&nbsp;Joseph]]', and it has also been called 'carpenter's weed' in this regard.<ref name=":2" /><ref name="ModernHerbal" />

Various other common names include ''arrowroot'', ''death flower'', ''eerie'', ''hundred-leaved grass'', ''knyghten'', ''old man's mustard'', ''sanguinary'',<ref name="ModernHerbal" /> ''seven-year's love'', ''snake's grass'', and ''soldier''. The names ''milfoil'' and ''thousand leaf'' come refer to the minutely divided leaves.<ref name="Chandler1982" /> In [[Spanish language|Spanish]], it is known as ''gordaldo'' and, in [[New Mexico]] and southern [[Colorado]], ''plumajillo'' (Spanish for 'little feather').


In [[Sussex]] and [[Devonshire]] superstition, yarrow was used for finding one's real sweetheart. One would pluck yarrow growing on a young man's grave while reciting:
In [[Sussex]] and [[Devonshire]] superstition, yarrow was used for finding one's real sweetheart. One would pluck yarrow growing on a young man's grave while reciting:
Line 240: Line 239:
In [[Dublin]] on May Day or the night before, women would place a stocking full of yarrow under their pillow and recite:
In [[Dublin]] on May Day or the night before, women would place a stocking full of yarrow under their pillow and recite:
:Good morrow, good yarrow, good morrow to thee,<br />I hope by the yarrow my lover to see;<br />And that he may be married to me.<br />The colour of his hair and the clothes he does wear,<br />And if he be for me may his face be turned to me,<br />And if he be not, dark and surely may he be,<br />And his back be turned toward me.<ref name="Folklorev1" />
:Good morrow, good yarrow, good morrow to thee,<br />I hope by the yarrow my lover to see;<br />And that he may be married to me.<br />The colour of his hair and the clothes he does wear,<br />And if he be for me may his face be turned to me,<br />And if he be not, dark and surely may he be,<br />And his back be turned toward me.<ref name="Folklorev1" />

In the [[witchcraft trial]] of [[Elspeth Reoch]] in March 1616, she was alleged to have plucked "melefour", thought to be another name for yarrow, and said "''In nomine Patris, Fiili, et Spiritus Sancti''" to become able to cure distemper (disorders of the [[four humours]]) and impart the faculty of prediction.<ref name="Folklorev1" />

Yarrow was thought to bring luck due to being, according to one woman cited by [[James Britten]], "the first herb our Saviour put in His hand when a child."<ref name="Folklorev1" /> This is apparently a corruption of the Achilles myth.<ref name=":2" />


==Gallery==
==Gallery==

Latest revision as of 06:48, 26 October 2024

Achillea millefolium
Scientific classification Edit this classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Asterids
Order: Asterales
Family: Asteraceae
Genus: Achillea
Species:
A. millefolium
Binomial name
Achillea millefolium
Synonyms
Synonymy
  • Achillea albida Willd.
  • Achillea alpicola (Rydb.) Rydb.
  • Achillea ambigua Boiss.
  • Achillea ambigua Pollini
  • Achillea anethifolia Fisch. ex Herder
  • Achillea angustissima Rydb.
  • Achillea arenicola A.Heller
  • Achillea bicolor Wender.
  • Achillea borealis Bong.
  • Achillea californica Pollard
  • Achillea ceretanica Sennen
  • Achillea compacta Lam.
  • Achillea coronopifolia Willd.
  • Achillea crassifolia Colla
  • Achillea cristata Hort. ex DC.
  • Achillea dentifera Rchb.
  • Achillea eradiata Piper
  • Achillea fusca Rydb.
  • Achillea gigantea Pollard
  • Achillea gracilis Raf.
  • Achillea haenkeana Tausch
  • Achillea intermedia Schleich.
  • Achillea lanata Lam.
  • Achillea lanulosa Nutt.
  • Achillea laxiflora A.Nelson
  • Achillea laxiflora Pollard & Cockerell
  • Achillea magna All.
  • Achillea magna L.
  • Achillea magna Haenke
  • Achillea marginata Turcz. ex Ledeb.
  • Achillea nabelekii Heimerl
  • Achillea occidentalis (DC.) Raf. ex Rydb.
  • Achillea ochroleuca Eichw.
  • Achillea ossica K.Koch
  • Achillea pacifica Rydb.
  • Achillea palmeri Rydb.
  • Achillea pecten-veneris Pollard
  • Achillea pratensis Saukel & R.Länger
  • Achillea pseudo-tanacetifolia Wierzb. ex Rchb.
  • Achillea puberula Rydb.
  • Achillea pumila Schur
  • Achillea rosea Desf.
  • Achillea setacea Schwein.
  • Achillea sordida (W.D.J.Koch) Dalla Torre & Sarnth.
  • Achillea subalpina Greene
  • Achillea submillefolium Klokov & Krytzka
  • Achillea sylvatica Becker
  • Achillea tanacetifolia Mill.
  • Achillea tenuifolia Salisb.
  • Achillea tenuis Schur
  • Achillea tomentosa Pursh 1813 not L. 1753
  • Achillea virgata Hort. ex DC.
  • Achillios millefoliatus St.-Lag.
  • Alitubus millefolium (L.) Dulac
  • Alitubus tomentosus Dulac
  • Chamaemelum millefolium (L.) E.H.L.Krause
  • Chamaemelum tanacetifolium (All.) E.H.L.Krause
  • Chamaemelum tomentosum (L.) E.H.L.Krause
  • plus many more names for subspecies, forms, and varieties

Achillea millefolium, commonly known as yarrow (/ˈjær/) or common yarrow, is a flowering plant in the family Asteraceae. Growing to 1 metre (3+12 feet) tall, it is characterized by small whitish flowers, a tall stem of fernlike leaves, and a pungent odor.

The plant is native to temperate regions of the Northern Hemisphere in Asia, Europe, and North America. It has been introduced as a feed for livestock in New Zealand and Australia. Used by some animals, the plant may have somewhat toxic properties, although historically it has been employed for medicinal purposes.

Description

[edit]
Petiolate leaves on lower stems
Illustration from Köhler's Medicinal Plants (1887–1898)

Achillea millefolium is an erect, herbaceous, perennial plant that produces one to several stems 0.2–1 metre (8–40 inches) in height, and has a spreading rhizomatous growth form. Cauline and more or less clasping,[2] the leaves appear spirally and evenly along the stem, with the largest and most petiolate towards the base;[3] they are 5–20 centimetres (2–8 in) long and fernlike, divided bipinnately or tripinnately.[4]

The inflorescence has 4 to 9 phyllaries and contains ray and disk flowers which are white to pink, blooming from March to October.[5] There are generally 3 to 8 ray flowers, which are 3 millimetres (18 in) long[5] and ovate to round. The tiny disk flowers range from 10 to 40.[5] The inflorescence is produced in a flat-topped capitulum cluster and the inflorescences are visited by many insects, featuring a generalized pollination system.[6] The small achene-like fruits are called cypsela.[2]

The plant has a sweet scent similar to that of chrysanthemums,[7] so powerful that it may be irritating to some.[5]

Chemistry

[edit]

The dark blue essential oil of yarrow contains chemicals called proazulenes.[8]

Chamazulene and δ-Cadinol are chemical compounds found in A. millefolium. The chromophore of azulene was discovered in yarrow and wormwood and named in 1863 by Septimus Piesse.

Yarrow contains isovaleric acid, salicylic acid, asparagine, sterols, and flavonoids.[9] It also contains phenolic acids such as gallic acid, 3, 4-dihydroxy benzoic acid, chlorogenic acid, vanillic acid, caffeic acid, syringic acid, p-coumaric acid, sinapic acid, ferulic acid, cinnamic acid and flavonoid such as myricetin, hesperidin, quercetin, luteolin, kaempferol, apigenin, rutin, hyperoside.[10]

Taxonomy

[edit]

Subdivision

[edit]

The several varieties and subspecies include:

  • Achillea millefolium subsp. millefolium
    • A. m. subsp. m. var. millefolium – Europe, Asia
    • A. m. subsp. m. var. borealisArctic regions
    • A. m. subsp. m. var. rubra – Southern Appalachians
  • A. millefolium subsp. chitralensis – western Himalaya
  • A. millefolium subsp. sudeticaAlps, Carpathians
  • Achillea millefolium var. alpicola – Western United States, Alaska[11]
  • Achillea millefolium var. californica – California, Pacific Northwest[12][13][14]
  • Achillea millefolium var. occidentalis – North America[15]
  • Achillea millefolium var. pacifica – west coast of North America, Alaska[16]
  • Achillea millefolium var. puberulaendemic to California[17]

Etymology

[edit]

The genus name Achillea is derived from mythical Greek character Achilles, who reportedly carried it with his army to treat battle wounds.[18] The specific epithet millefolium comes from the featherlike leaves which are minutely divided.[18]

Distribution and habitat

[edit]

Yarrow is native to temperate regions of the Northern Hemisphere in Asia, Europe, and North America.[7]

Wenatchee Foothills, Chelan County, Washington

The plant grows from sea level to 3,500 m (11,500 ft) in elevation. Common yarrow is frequently found in the mildly disturbed soil of grasslands and open forests. Active growth occurs in the spring.[7][2]

In North America, both native and introduced genotypes, and both diploid and polyploid plants are found.[19] It is found in every habitat throughout California except the Colorado and Mojave Deserts.[20][21] Common yarrow produces an average yield of 110,000 plants per hectare (43,000/acre), with a total dry weight of 11,800 kg/ha (10,500 pounds per acre).[22]

It has been introduced as a feed for livestock in New Zealand[23] and Australia, where it is a common weed of both wet and dry areas, such as roadsides, meadows, fields and coastal places.[23]

Ecology

[edit]
Pollination by Eristalis arbustorum

Birds

[edit]

Several cavity-nesting birds, including the common starling, use yarrow to line their nests. Experiments conducted on the tree swallow, which does not use yarrow, suggest that adding yarrow to nests inhibits the growth of parasites.[24]

Insects

[edit]

Achillea millefolium is a food source for many species of insects, although is not particularly attractive to ladybirds.[25]

Moths

The larvae of the moths Bucculatrix clavenae, B. cristatella, B. fatigatella, B. humiliella, B. latviaella, Cnephasia abrasana, Cochylimorpha elongana, Coleophora argentula, C. carelica, C. ditella, C. expressella, C. follicularis, C. gardesanella, C. millefolii, C. partitella, C. ptarmicia, C. quadristraminella, C. succursella, C. vibicigerella, Depressaria olerella, D. silesiaca, Dichrorampha alpinana (broad-blotch drill), D. petiverella, D. vancouverana (tanacetum root moth), Eupithecia millefoliata (yarrow pug), E. nanata (narrow-winged pug), Gillmeria pallidactyla, Idaea pallidata, Isidiella nickerlii, Loxostege manualis, Phycitodes maritima, P. saxicola, Pyncostola bohemiella, Sophronia sicariellus and Thetidia smaragdaria (Essex emerald) feed on Achillea millefolium in Europe.
The larvae of Chlorochlamys chloroleucaria (blackberry looper), Coleophora quadruplex and Sparganothoides lentiginosana (lentiginos moth) feed on A. millefolium in North America.
Other species of moths with a more cosmopolitan distribution include Aethes smeathmanniana (Smeathmann's aethes moth), Chloroclystis v-ata (v-pug), Choristoneura diversana, Cochylidia richteriana, Epiblema graphana, Eupithecia succenturiata (bordered pug), E. vulgata (common pug), Jordanita budensis and Thiodia citrana (lemon bell). The Noctuid Agrotis stigmosa has also been reared on A. millefolium.[26]

Beetles

Cassida denticollis, Galeruca tanaceti, Hypocassida subferruginea and Phytoecia virgula are cosmopolitan species of beetles that feed on A. millefolium.
Chrysanthia viridissima is a European species whose adults can be found feeding on pollen and nectar.
Trichodes ornatus (ornate checkered beetle) is a species found in North America whose adults can be found feeding on A. millefolium.

True bugs

Horistus orientalis is a species of plant bugs that feeds on A. millefolium.

Wasps

Hedychrum rutilans is a species of cuckoo wasps whose adults can be found feeding on A. millefolium in Europe and North Africa.

Galls

Aceria kiefferi (Nalepa, 1891) is a mite that deforms flowers and leaves. external link to gallformers

Cultivation

[edit]
A. millefolium 'Paprika' cultivar
A. millefolium cultivar

Achillea millefolium is cultivated as an ornamental plant by many plant nurseries. It is planted in gardens and natural landscaping settings of diverse climates and styles. They include native plant, drought-tolerant, and wildlife gardens. The plant is a frequent component of butterfly gardens. The plant prefers well-drained soil in full sun, but can be grown in less ideal conditions.[27][28][29]

Propagation

[edit]

For propagation, seeds require light for germination, so optimal germination occurs when planted no deeper than 6 mm (14 in). Seeds also require a germination temperature of 18–24 °C (64–75 °F). It has a relatively short life in some situations, but may be prolonged by division in the spring every other year, and planting 30 to 46 cm (12–18 in) apart. It can become invasive.[30]

Cultivars

[edit]

The species use in traditional gardens has generally been superseded by cultivars with specific 'improved' qualities.[31] Some are used as drought-tolerant lawns, with periodic mowing.[32][33][34][35] The many different ornamental cultivars include: 'Paprika',[36] 'Cerise Queen', 'Red Beauty',[37] 'Red Velvet',[38] 'Saucy Seduction', 'Strawberry Seduction' (red), 'Island Pink' (pink),[39] 'Calistoga' (white),[40] and 'Sonoma Coast' (white).[41] The following are recipients of the Royal Horticultural Society's Award of Garden Merit:

  • 'Credo'[42]
  • 'Lachsschönheit' (Galaxy Series)[43]
  • 'Martina'[44]
  • 'Lansdorferglut'[45]

The many hybrids of this species designated Achillea × taygetea are useful garden subjects,[46] including: 'Appleblossom', 'Fanal', 'Hoffnung', and 'Moonshine'.[47]

Toxicity

[edit]

Yarrow can cause allergic skin rashes.[48] It reportedly can induce menstruation and cause miscarriages.[49]

According to the American Society for the Prevention of Cruelty to Animals, yarrow is toxic to dogs, cats, and horses, causing increased urination, vomiting, diarrhea and dermatitis.[50] When consumed by cows, an unfavorable flavor is given to their milk.[51] In a standard rodent model for reproductive toxicity, aqueous extracts of yarrow produced a significant increase in the percentage of abnormal sperm.[52]

Uses

[edit]

Essential oil
Yarrow can produce a dense mat of soft leaves.

Traditional medicine

[edit]

A. millefolium was used in traditional medicine, in part due to its astringent properties and the mild laxative effect of its leaves.[53][54] It has been used since ancient times to heal wounds and stop bleeding, and in the sixteenth century the crushed leaves were used to stop nosebleeds.[55] Yarrow and its North American varieties were traditionally used by many Native American nations.[56] The Navajo historically considered it a "life medicine" and chewed the plant for toothaches and used its infusions for earaches. The Miwok in California used the plant as an analgesic and head cold remedy.[56] Native American nations used the plant for healing cuts and abrasions, relief from earaches and throat infections, as well as for an eyewash.[57] Common yarrow was used by Plains indigenous peoples to reduce pain or fever and aid sleep.[56]

In the early 20th century, some Ojibwe people used a decoction of yarrow leaves on hot stones and inhaled it to treat headaches,[58] or applied decoctions of the root onto skin for its stimulating effect.[59]

Food

[edit]

The entire plant is reportedly edible and nutritious,[49] but it is advised not to consume much.[60] The foliage is pungent; both its leaves and flowers are bitter and astringent.[53] The leaves can be eaten young; raw, they can be added to salad.[60] The leaves, with an aniseed-grass flavour, can be brewed as tea.[61]

In the Middle Ages, yarrow was part of a herbal mixture known as gruit used in the flavoring of beer prior to the use of hops.[62] The flowers and leaves are used in making some liquors and bitters.[7]

Other uses

[edit]

Yarrow is used as a companion plant, attracting some beneficial insects[63] and repelling some pests.[citation needed]

A. millefolium can be planted to combat soil erosion due to the plant's resistance to drought. Before the arrival of monocultures of ryegrass, both grass and pasture contained A. millefolium at a density of about 0.3 kg/ha.[citation needed] One factor for its use in grass mixtures was its deep roots, with leaves rich in minerals, minimizing mineral deficiencies in ruminant feed. It was introduced into New Zealand as a drought-tolerant pasture.[23]

Some pick-up sticks are made of yarrow.[citation needed]

Yarrow can be used for dying wool as it contains apigenin and luteolin. Depending on the mordant the color may be green to yellow.[64]

Culture

[edit]

Yarrow has been found with Neanderthal burials, suggesting its association with human species dates to at least 60,000 years ago.[55]

China

[edit]
A bunch of 50 yarrow A. millefolium subsp. millefolium var. millefolium stalks, used for I Ching divination

Yarrow and tortoiseshell are considered to be lucky in Chinese tradition.[65]

The stalks are dried and used as a randomising agent in I Ching divination.[66]

Western world

[edit]

In antiquity, the plant was known as herba militaris for its use in stanching the flow of blood from wounds.[67] In the Classical Greek epic Iliad, Homer tells of the centaur Chiron, who conveyed herbal secrets to his human pupils and taught Achilles to use yarrow on the battlegrounds of Troy.[68] The genus name Achillea is inspired by the alleged use of the herb by Achilles to treat his soldiers' wounds.[55] Other names implying the plant's historical use in healing—particularly in the military—include bloodwort, knight's milfoil, staunchweed, and, from its use in the United States Civil War, soldier's woundwort.[18] Its use in either starting or stopping nosebleeds led to the common name nosebleed.[53][69]

The English name yarrow comes from its Saxon (Old English) name gearwe, which is related to both the Dutch word gerw (alternately yerw)[53] and the Old High German word garawa.[70] In the eastern counties[clarification needed] it may be called yarroway.[53] It was called old man's pepper due to its pungent flavor, while the name field hop came from its use in beer making in Sweden.[53]

In the Hebrides, a leaf held against the eyes was sometimes believed to give second sight.[71] In the witchcraft trial of Elspeth Reoch in March 1616, she was alleged to have plucked "melefour", thought to be another name for yarrow, and said "In nomine Patris, Fiili, et Spiritus Sancti" to become able to cure distemper (disorders of the four humours) and impart the faculty of prediction.[69] For its association with the Abrahamic devil it was called bad man's plaything, devil's nettle, and devil's plaything.[53] Yarrow was thought to bring luck due to being, according to one woman cited by James Britten (c. 1878), "the first herb our Saviour put in His hand when a child".[69] This is apparently a corruption of the Achilles myth[72] in which Jesus uses the plant to heal his adoptive father. For this reason, in France, it was called 'herbe de St. Joseph', and it has also been called 'carpenter's weed' in this regard.[72][53]

Various other common names include arrowroot, death flower, eerie, hundred-leaved grass, knyghten, old man's mustard, sanguinary,[53] seven-year's love, snake's grass, and soldier. The names milfoil and thousand leaf come refer to the minutely divided leaves.[18] In Spanish, it is known as gordaldo and, in New Mexico and southern Colorado, plumajillo (Spanish for 'little feather').

In Sussex and Devonshire superstition, yarrow was used for finding one's real sweetheart. One would pluck yarrow growing on a young man's grave while reciting:

Yarrow, sweet yarrow, the first that I have found,
in the name of Jesus Christ, I pluck it from the ground;
As Joseph loved sweet Mary, and took her for his dear,
so in a dream this night, I hope, my true love will appear.

and go to sleep with the yarrow under the pillow.[69]

In a similar tradition in Wicklow, girls would pick yarrow on Hallow Eve and recite:

Thou pretty herb of Venus' tree,
Thy true name is yarrow;
Now who my bosom friend may be,
Pray tell thou me to-morrow.

then retire for the night without speaking and go to sleep with an ounce of yarrow sewn in flannel under the pillow.[69]

In Suffolk a leaf was placed in the nose so it would bleed, while reciting

Green 'arrow, green 'arrow, you bears a white blow,
If my love love me, my nose will bleed now;
If my love don't love me, it 'on't bleed a drop,
If my love do love me, 'twill bleed every drop.[69]

In Dublin on May Day or the night before, women would place a stocking full of yarrow under their pillow and recite:

Good morrow, good yarrow, good morrow to thee,
I hope by the yarrow my lover to see;
And that he may be married to me.
The colour of his hair and the clothes he does wear,
And if he be for me may his face be turned to me,
And if he be not, dark and surely may he be,
And his back be turned toward me.[69]
[edit]

References

[edit]
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