How to Prune Geranium robustum?
Cut back after flowering to encourage the production of fresh leaves and flowers. Remove old dead foliage in spring before growth commences

Geranium robustum · Geranium robustum
Grow in any moderately fertile soil apart from waterlogged soils. Full sun or partial shade is best for good growth and flowering
Cut back after flowering to encourage the production of fresh leaves and flowers. Remove old dead foliage in spring before growth commences