Vicia americana aka Peavine

Vicia americana, or American vetch, belongs to the pea family, Fabaceae. It is a perennial native to North America. Its range covers parts of Canada, the United States, and Mexico. Kew places it in the temperate zone. It grows on damp slopes, in thickets, and in meadows. It also occurs on slopes with gravelly soil. These habitats span both open ground and places with nearby vegetation.

This plant reaches about 3.3 feet (1 metre) tall and wide. It climbs with tendrils that grip nearby supports. Its climbing habit suits beds where it has support. The supplied sources give few species-specific details about its leaves. They also offer no clear account of flower colour. PFAF lists July as its flowering month. Each flower has both male and female organs. Insects pollinate the flowers, and the plant is self-fertile. Pods measure about 1.2 inches long and hold four to seven seeds.

PFAF lists sandy, loamy, and clay soils as suitable. It also lists mildly acid, neutral, and mildly alkaline soils. The soil should drain well but remain moist. The plant can grow in sun or partial shade. PFAF gives USDA hardiness zones 4–7. Yet its cultivation notes express doubt about hardiness in Britain. Those notes also draw partly on the needs of the genus. Treat that broader growing advice with care rather than as tested guidance for this species.

American vetch can fix nitrogen through its partnership with root bacteria. This gives it a role in plantings aimed at soil improvement. PFAF also records its use in mulch and as fertilizer. People have used its strong roots as ties. Seeds can be soaked in warm water for 24 hours. PFAF advises sowing them where they will grow, in spring or autumn. It does not flag the plant as weedy. The supplied evidence names no specific pests or diseases.

PFAF records food uses for leaves, shoots, seeds, and young pods. Young shoots are cooked, while both tender and mature seeds have recorded uses. It reports no known hazards, but this is not proof of safety. Historical remedies used leaves for bites and soreness, and plant infusions as eyewashes. These records describe past uses, not proven treatments.