UK pruning guide · RHS timing
When to prune geranium sylvaticum 'mayflower' in the UK
Why the timing differs here
For shrubs that flower on the current season's growth, the RHS times pruning to early or mid spring — after severe weather has passed and once the growth buds begin to swell. In Britain that is usually March into April rather than the February common in warmer regions; prune too early and the new shoots meet a late frost.
How to prune geranium sylvaticum 'mayflower'
Cut all stems and foliage to 5–10 cm (2–4 in) above ground with shears after flowering. Remove spent leaves in autumn; leave the crown undisturbed over winter.
'Mayflower' is a named form of wood cranesbill with violet-blue flowers. Like the species, it benefits from a hard cut-back immediately after its late spring to early summer flowering. Shearing the whole plant to near ground level encourages a second flush of bloom and keeps the clump tidy.
More geranium sylvaticum 'mayflower' care for British gardens
Care at a glance
- When to prune geranium sylvaticum in the UK — the species this cultivar belongs to
- General geranium sylvaticum 'mayflower' pruning guide
- RHS hardiness ratings explained
Pruning geranium sylvaticum 'mayflower' in the UK — FAQ
When should I prune geranium sylvaticum 'mayflower' in the UK?
Prune geranium sylvaticum 'mayflower' in early to mid spring. For shrubs that flower on the current season's growth, the RHS times pruning to early or mid spring — after severe weather has passed and once the growth buds begin to swell. In Britain that is usually March into April rather than the February common in warmer regions; prune too early and the new shoots meet a late frost.
Is it illegal to prune geranium sylvaticum 'mayflower' in spring or summer in the UK?
There is no nesting-bird restriction that realistically applies to geranium sylvaticum 'mayflower', since birds do not nest in it. The Wildlife and Countryside Act 1981 still protects any active nest you do find anywhere in the garden — the rule is about the nest, not the plant.
How do you prune geranium sylvaticum 'mayflower'?
Cut all stems and foliage to 5–10 cm (2–4 in) above ground with shears after flowering. Remove spent leaves in autumn; leave the crown undisturbed over winter.
How often does geranium sylvaticum 'mayflower' need pruning in a British garden?
Annually after first flowering. 'Mayflower' is a named form of wood cranesbill with violet-blue flowers. Like the species, it benefits from a hard cut-back immediately after its late spring to early summer flowering. Shearing the whole plant to near ground level encourages a second flush of bloom and keeps the clump tidy.
Why is UK pruning timing different from American advice?
Most pruning guides online are written for US conditions and anchored to USDA zones. Britain's maritime climate gives milder winters but later, less predictable last frosts — from March in the south-west to mid-May in the north — so the RHS advises against winter pruning for most plants: it pushes out soft growth that a late frost then kills. Britain also has the nesting-bird law, which has no US equivalent.