Greater Masterwort

How to grow Greater Masterwort

Written by the GardenDecoded editorial team · Last reviewed 21 July 2026 · Written for UK gardens · How we research our guidance

Planting

Plant in spring or autumn in soil that holds moisture; this is the single factor that decides whether astrantia thrives. It tolerates full sun only where the ground stays damp, and otherwise prefers dappled shade. Mulch generously after planting.

Pruning

Cut the flowered stems back to the base in midsummer once the first flush fades and the plant will usually produce a second, lighter flush in late summer. Remove old foliage in late autumn or early spring.

Propagation

Divide in spring, which is the reliable method for named forms. Seed germination is erratic and usually needs a cold period, and seedlings vary in colour.

Pests and diseases

Slugs and snails on young growth. Powdery mildew appears on plants that go dry at the root.

Value to wildlife

The pincushion flowerheads are heavily worked by hoverflies, small bees and beetles, and they hold up well for cutting too.

Notes

Dryness is the usual cause of disappointment. If a plant is struggling, the answer is almost always more moisture and more organic matter rather than more feeding.

This guidance was researched and written by GardenDecoded — see our editorial policy for how guides are checked and reviewed.

Other names for this plant

These names have all been used for Astrantia major but are no longer the accepted name. You may still meet them on old labels, in books, or in nursery catalogues.

Others in Astrantia