Knapweed - Centaurea biebersteinii
This plant has been filmed but is not available on the web.
Spotted Knapweed is a biennial plant that has purplish colored flowers.
Its leaves are alternate, and covered with translucent dots ... thus,
giving it its name. This plant does not spread via runners, but instead
only by seeds.
Similar species to spotted knapweed include canada
thistle, diffuse knapweed, russian
knapweed and yellow starthistle.
Spotted Knapweed was introduced in 1893 from Europe into Victoria, BC.
Since then it has spread across most of the united states and is reason
for great concern. It is particularly troublesome in the Northwestern
United States and British Columbia.
Links to more information
Website, video, and graphics by Rob Nelson
For more information on this plant or management please contact US Army Corp of Engineers
Spotted Knapweed Video
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