A yard square of YST can produce up to 30,000 seeds. YST is poisonous to horses only, a mechanical injury occurs from grazing the spiny seed heads. It is fairly high in protein, and cattle, sheep, and ...

Canada thistle (Cirsium arvense) is a creeping perennial broadleaf that is native to the Mediterranean area. It spreads ...

Canada thistle (Cirsium arvense) is a perennial weed with a deep rooting system. It is commonly found on roadside edges, fallow land, and increasingly in farm production areas. Thistle tends to be ...