UK pruning guide · RHS timing
When to prune antirrhinum majus 'sonnet pink' 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 antirrhinum majus 'sonnet pink'
Cut spent spikes back to the nearest healthy lateral shoot or leaf node. After the main flush is over, shear the plant back by one-third to one-half, then water and apply a balanced liquid feed.
'Sonnet Pink' is a mid-height snapdragon that responds well to deadheading to extend its season. Remove spent flower spikes promptly to prevent seed set and encourage lateral shoots to bloom. A post-first-flush cutback to strong side shoots can produce a worthwhile second wave of flowers in late summer.
More antirrhinum majus 'sonnet pink' care for British gardens
Care at a glance
- When to prune snapdragon in the UK — the species this cultivar belongs to
- General antirrhinum majus 'sonnet pink' pruning guide
- RHS hardiness ratings explained
Pruning antirrhinum majus 'sonnet pink' in the UK — FAQ
When should I prune antirrhinum majus 'sonnet pink' in the UK?
Prune antirrhinum majus 'sonnet pink' 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 antirrhinum majus 'sonnet pink' in spring or summer in the UK?
There is no nesting-bird restriction that realistically applies to antirrhinum majus 'sonnet pink', 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 antirrhinum majus 'sonnet pink'?
Cut spent spikes back to the nearest healthy lateral shoot or leaf node. After the main flush is over, shear the plant back by one-third to one-half, then water and apply a balanced liquid feed.
How often does antirrhinum majus 'sonnet pink' need pruning in a British garden?
Deadhead every 1–2 weeks; one rejuvenation cutback after the first main flush. 'Sonnet Pink' is a mid-height snapdragon that responds well to deadheading to extend its season. Remove spent flower spikes promptly to prevent seed set and encourage lateral shoots to bloom. A post-first-flush cutback to strong side shoots can produce a worthwhile second wave of flowers in late summer.
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.