By East Kootenay Invasive Species Council

Mountain bluet, also known as Perennial cornflower or Montane knapweed, is a popular garden perennial introduced from Europe; however, it easily escapes gardens and invades natural areas.

This plant can self-seed, which makes it difficult to control. It also spreads through roots. Mountain bluet is found in meadows, pastures, roadsides and disturbed open areas.

Mountain bluet ranges from 30-80 cm in height, with fine hairs cover the stem.  The flowers are large, bright blue with a ray-like appearance and black fringe at the base and look a lot like knapweed flowers. Its leaves are 10-30 cm long, lance shaped, with a woolly underside.

Prior to seed production, pulling, cutting, or mowing can be effective. If flowers are present, be sure to properly dispose of plants to ensure no more seeds are dispersed. Try to remove as much of the root as possible to discourage regrowth.

East Kootenay Invasive Species Council photo

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