How to Prune Geranium pratense 'New Dimension'?
No pruning required. Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers

Geranium pratense 'New Dimension' · Geranium pratense 'New Dimension'
Grow in moderately fertile, well-drained soil in partial shade
No pruning required. Remove flowered stems and old leaves to encourage the production of fresh leaves and flowers