Biological Category
Plants
Species Type
Other Herbaceous
NY Legal Status
Not Regulated
LHPrism Status
Tier 4 - Widespread
Vertical Tabs
Impacts of this species
Black knapweed is considered an aggressive weed, invading disturbed areas, roadsides, and meadows and fields. A hybrid of Black knapweed and Brown knapweed is fertile and widespread in the northeastern United States.
Best Practices
