UK pruning guide · RHS timing
When to prune alchemilla mollis 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 alchemilla mollis
Shear the entire plant to the ground with garden shears or scissors as soon as the flowers begin to fade and before seed heads mature. New basal foliage will regrow within weeks.
Alchemilla mollis self-seeds very freely. The key pruning task is cutting the whole plant hard back to the ground immediately after flowering, before seeds ripen and scatter — typically mid to late summer. This prevents a carpet of unwanted seedlings and prompts a fresh flush of the attractive scalloped foliage. Plants recover quickly.
More alchemilla mollis care for British gardens
Care at a glance
Pruning alchemilla mollis in the UK — FAQ
When should I prune alchemilla mollis in the UK?
Prune alchemilla mollis 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 alchemilla mollis in spring or summer in the UK?
There is no nesting-bird restriction that realistically applies to alchemilla mollis, 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 alchemilla mollis?
Shear the entire plant to the ground with garden shears or scissors as soon as the flowers begin to fade and before seed heads mature. New basal foliage will regrow within weeks.
How often does alchemilla mollis need pruning in a British garden?
Cut to ground once annually after flowering; remove unwanted seedlings as they appear. Alchemilla mollis self-seeds very freely. The key pruning task is cutting the whole plant hard back to the ground immediately after flowering, before seeds ripen and scatter — typically mid to late summer. This prevents a carpet of unwanted seedlings and prompts a fresh flush of the attractive scalloped foliage. Plants recover quickly.
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.