Hairy Vetch

Pest: Hairy Vetch (Vicia villosa)

Pest Type: Annual or perennial broadleaf weed

Major Identifying Features: Climbing stems up to 6.5 feet tall, white-woolly appearance, long soft hairs, shallow taproot system, compound pinnate leaves with 4-12 pairs of opposite leaflets, purple-blue flowers, pods contain 2-8 round seeds, rapid growth rate

Life Cycle: Winter annual/biennial, reproduces by seed

Pest Rating: Minor

Management Rating: Moderate

Host/Season/Outbreak Information: Grows best in dry sandy soils, not invasive in California, self-pollinator

Damage Information: Originally used as cover crop, can outcompete native plant species, plant is toxic

Management Options: Prevention by pulling weeds before they go to seed, by burning or mowing, chemical control with herbicides such as clopyralid

Sources:

http://www.na.fs.fed.us

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