Woolly Vetch, also known as Hairy Vetch and Winter Vetch (Vicia Villosa) is an annual or biennial viney forb in the Pea Family (Fabaceae). It’s native to Europe and Asia. Blooms Apr-Aug and grows climbing 2-6 ft. It’s a Common weed in prairies, meadows, fields and roadsides. Tolerates moist to dry soils and partial to full sun exposure.
Woolly Vetch can fix nitrogen, is very similar to Bird Vetch (Vicia Cracca); Woolly Vetch is however much more hairy in both stems and leaves and tends to have the two-colored flowers all the time. Note that Bird Vetch may also get two-colored flowers and some hair in leaves but mainly has smooth stems.
Similar plants include: