Like most plants, cannabis has specific nutritional needs throughout its cultivation, which vary depending on the stage of its life cycle. The growth phase is the initial stage for cannabis plants, extending into the flowering period for photo-dependent strains.
During the growth stage (also known as the vegetative phase), plants focus on developing their root systems and creating new buds and leaves to reach sexual maturity. This prepares them for optimal flowering and a large harvest. The most important nutrient for this phase is nitrogen, along with some micronutrients.
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There are many specific fertilisers available for the growth phase, in either liquid or solid form, and from mineral, organic, or organic-mineral origins. These fertilisers help the plant develop optimally by stimulating the production of foliage to increase its photosynthetic capacity.
Growth fertilisers can be classified based on their origin:
Fertilisers can also be classified by their method of application. The most common are:
Some classify fertilisers based on their composition (simple/composite fertilisers, etc.) or their state (liquid, solid, gas). There are also solid growth fertilisers that do not need to be dissolved in water. These are simply mixed into the substrate or added to the soil surface. Solid fertilisers are slow-release and need only to be watered in as required.
When growing cannabis in soil, fertilisers from any source can be used. Any fertiliser designed for cannabis growth is valid, whether organic, mineral, or organic mineral, as they are all formulated to provide the correct balance of NPK (nitrogen, phosphorus, potassium) and essential micronutrients for the vegetative phase.
In this post we will give you important information about the use of fertilisers for cannabis plants, distinguishing between mineral and organic fertilisers and their main features in order for you to decide which type of nutrients to use throughout the growing cycle.
It is important to note that in outdoor soil cultivation, the plant has access to a larger volume of soil. In pot cultivation, however, it is necessary to supply all the nutrients required for growth, as the roots have access to a more limited volume of nutrients.
In aeroponic or hydroponic growing systems, fertilisers must be of mineral origin to prevent clogging in the system or fermentation in the irrigation tank, as they may remain diluted in water for weeks in optimal conditions.
Fertilisers for coco or hydroponic cultivation are also suitable for soil cultivation. The most popular are two-part formulations, often labelled A and B, which are typically diluted in equal parts in water, with one containing micronutrients and the other macronutrients.
If you wish to maintain mother plants, growth fertilisers are ideal as they allow the plants to stay in the vegetative phase for extended periods.
Keeping cannabis mother plants may seem difficult for beginning growers, but nothing could be further from the truth. In this article we explain everything you need to know about the nutrition of the mother plants, an important aspect to achieve a correct development of the plants in the following months.
Auto-flowering cannabis plants have slightly different nutritional requirements compared to photoperiod plants. Since they grow and flower simultaneously, it is recommended to prepare a good all-mix substrate and primarily use flowering fertilisers.
