Tag Archives: Cirsium vulgare

Bull Thistle

Due to its size, spines and rapid spread, bull thistle (Cirsium vulgare) is considered an aggressive weed or noxious plant. Its seeds are wind dispersed, are viable for over ten years and each plant can produce over 10,000 seeds with … Continue reading

Posted in Noxious Weeds, Wildflowers | Tagged , | 5 Comments