Vicia sepium aka Bush Vetch

Vicia sepium is a climber in the pea family, Fabaceae. It is a perennial, which means it lives for years. Its common names include bush vetch and hedge vetch. Its native range spans Europe, China, the western Himalaya, and Morocco. It is native to Britain and Ireland. It grows in grassland, hedges, and thickets in temperate regions. These sites help explain its use in less formal gardens.

Plants reach about 1.6–3.3 feet [0.5–1 metre] tall and wide. They reach full size within one to two years. The stems spread and scramble, with leaf tendrils helping them climb. Green leaves have many pairs of leaflets along a central stalk. Tendrils take the place of the last pair of leaflets. The leaves are deciduous: they do not stay all year. This spreading climber fits among other meadow and hedge plants.

Small, pea-shaped flowers grow in groups and have a lilac-blue colour. Many insects visit the blooms and pollinate them. Seed pods follow the flowers. The supplied sources give no clear time for flowering. RHS recommends this species for wildlife gardens and wildflower meadows. Plants For A Future also places it in hedgerows. It lists sunny woodland edges too. The flowers and scrambling stems suit these less formal sites.

Grow hedge vetch in sun or partial shade. It needs moist soil that drains well. RHS lists clay, loam, sand, and chalk as suitable soils. It lists acid, neutral, and alkaline soils too. Yet Plants For A Future says wild plants avoid acid soils. RHS gives it a UK hardiness rating of H6. Plants For A Future lists USDA zones 5–9. Sow seeds outdoors where the plants will grow. Choose a spot in sun or light shade. RHS says it needs no pruning. It reports few usual problems with pests or disease.

Root nodules hold bacteria that take nitrogen from the air. This link feeds the plant and can help nearby plants too. Both gardening sources say this process helps make soil more fertile. Plants For A Future gives cooked seeds a low edible-use rating. It reports no known hazards. That does not mean the plant is safe for pets. The same source lists no known medicinal uses. Its best-supported garden roles are wildlife planting and nitrogen fixation.