Silverwood Park

Canada Thistle

Why is FoSP removing this plant? Though canada thistle is well-loved by many insect and bird species, it is on Wisconsin’s list of noxious weeds. It can outcompete native plants, and those that are considered desirable for wildlife and livestock foraging. Thistles can grow in dense thickets in areas with disturbed soils. Because of this noxious weed status by the state, we are required to keep the thistle population in check on Silverwood grounds.

Management techniques: Cut or mow stem and leaves at base of plant to weaken the root, ideally every three weeks. Greens can be left to break down on the land, or removed for juicing! If thistle has begun to flower or go to seed, please bag up the flower/seed, and remove from the park. (Bonus: if you are a juicer, healthy, unsprayed thistle is highly nutritious.)

Cautions: Naturally, thistles are quite prickly. It is recommended that you wear long pants, long sleeves, gloves, and sturdy, work shoes or boots to minimize chances getting scratched.