Bureau of Land Management Environmental Education Homepage

WANTED Spotted Knapweed

Spotted knapweed, introduced as a contaminant in alfalfa and clover seeds from Eurasia, is among the greatest weed problems in the eastern and western states. The weed's early spring growth makes them very competitive with more desireable native plants. The plant may also inhibit the growth of other plants in the immediate area.

Distinguishing Features Up to four feet tall. Rosette (small cluster of leaves close to the ground) first year, flowering stalks after the first year. Leaves can be six inches long and up to one inch in diameter. Leaves are pinnately divided on multi-branched stems. They can be six inches long and up to one inch in diameter. Flowers are pink to purple, occasionally white, solitary, and up to one inch in diameter.

If You Spot This Culprit, Report the location to a local land manager or park ranger. Avoid walking on, driving on, or camping in infested areas. Remove all weed seeds from your clothing, shoes, pets, camping gear, and tire treads before moving on.

We have reason to believe this criminal weed is hiding out in the surrounding area.

We Need Your Help!

Reward: Knowing you have contributed to a healthier environment.

---

Last Updated: January 25, 2005

BLM Learning Landscapes Home