Bighead Knapweed
Bighead knapweed (Centaurea macrocephala) is an invasive perennial herb found in British Columbia, known for its large, globe-shaped yellow flower heads.
Spotted Knapweed
Spotted knapweed, an invasive species in BC, is a biennial or short-lived perennial herb known for its distinctive “spotted” appearance due to the dark-tipped floral bracts.
Meadow Knapweed
Meadow knapweed is a perennial plant, a hybrid of brown and black knapweeds, known for its deep roots and ability to reproduce mainly by seed.
Greater Knapweed
Greater knapweed is a perennial herb with distinctive purple, thistle-like flower heads. It can grow up to 30 inches tall and thrives in full sun, well-drained soils.
Diffuse Knapweed
Diffuse knapweed, an invasive plant, is a problem in British Columbia, particularly in the southern interior, where it can cause significant economic and environmental damage by outcompeting native vegetation.