Common crupina (Crupina vulgaris) is a small flowering plant that poses a threat to rangeland.
Identification
Winter annual; fall or early spring germination. Flowers are a light purple to pink color, blooming in May. Seeds are black with a stiff fringe.
Economics
Potential rangeland threat, similar to knapweeds. Limited known sites make eradication a consideration.
Chemical control
Control efforts must be taken early in the spring. Range management and competitive grass stands may prove to be the most effective long-term control. Please refer to the PNW Weed Management Handbook and contact your local weed control supervisor for additional information.
Biological control
Five to six potential agents have been identified in Europe. Further research is continuing.
