While many gardeners spend countless hours trying to eradicate these plants, a closer look reveals a fascinating ... with ...

Not all invasive weeds ... long flower spikes ensconced by yellow-throated, pinkish-purple petals between July and September. When not flowering, it leaves out 4-inch long, sword-like, whorled ...

People treasure orchids because of their amazing exotic looks yet the plants present challenges when it comes to cultivation.