Invasive Plants

Credit: BC Ministry of Agriculture, Food and Fish

Among the worst of the perennial invasive plants is purple loosestrife which destroys wetland nesting and feeding sites.

Other big troublemakers are scentless chamomile and common tansy, both major infiltrators of the Kootenay and Okanagan regions; creeping buttercup, a major problem in agricultural areas; and diffuse knapweed, which produces 400 seeds from one plant in the first year, leading to 160,000 in the second year and potentially 64,000,000 seeds in the third.