sweet pea 'William Willson'

Grow in humus-rich, fertile, well-drained soil in full sun or light dappled shade. Incorporate well-rotted organic manure before planting and apply a balanced liquid fertilizer every two weeks when in growth. Deadhead regularly to prolong flowering. See sweetpea cultivation for further information

Deadhead regularly and cut back after flowering

Propagate by seed. Sow in a cold frame in early autumn, early spring or in-situ in mid-spring

May be attacked by aphids, slugs, snails and thrips

May be affected by powdery mildews, Fusarium wilt and sweet pea viruses