long-flowered corydalis

Ideally grown in sharply drained, moderately fertile soil in sun or partial shade in pots in an alpine house. Prefers more moisture in winter and partially drying out in summer, plant tubers in autumn. Plunge the pots in damp sand up to the collar of the pot to prevent drying out. Repot annually

No pruning required

Propagate by allowing tubers to increase each year. Propagate by seed sown as soon as it is ripe in pots in an open frame; germination may be erratic

Slugs and snails may be a problem

Generally disease free