Mary Corp
Published October 2018, Reviewed 2024

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.

Was this page helpful?

Related Content from OSU Extension

Have a question? Ask Extension!

Ask Extension is a way for you to get answers from the Oregon State University Extension Service. We have experts in family and health, community development, food and agriculture, coastal issues, forestry, programs for young people, and gardening.