Water regularly during the growing season, especially in dry periods, to maintain consistently moist soil. Reduce watering in autumn and winter as growth slows.

Ensure good drainage to prevent waterlogging, which can lead to root rot.

Prune lightly after flowering to maintain shape and encourage bushier growth, or to remove any dead or straggly stems. Minimal pruning is usually required; it naturally forms a dense, mounding habit.

Vicia sepium is easily propagated from seeds sown directly outdoors in early spring or autumn. It can also be propagated by division of established clumps in spring, although this is less common.

Repotting is generally not necessary for Vicia sepium, as it is a perennial that thrives when established in the ground. If grown in a container, repot in spring when the plant becomes root-bound, using fresh, well-draining potting mix.