Answer: Horsetail (Equisetum) is a weed that grows in moist, marshy areas. It's generally considered a nuisance and is extremely difficult to eradicate once established. The plants reproduce by spores, and the roots travel far and wide, sprouting at intervals, to overtake an area in a very short time. Given this information, hope you'll consider planting something a little better behaved than horsetail!
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