alum root 'Walnut'

Grow in a fertile, moist but well-drained, neutral soil in sun or partial shade. The woody rootstock tends to lift out of the ground so mulch annually or lift and replant. Tidy up old foliage in spring

If old plants becomes leggy and woody, cut back stem to a lower leaf bud in spring

Propagate by division in autumn

Prone to vine weevils and leaf and bud eelworm

May be affected by Heuchera rust