UK pruning guide · RHS timing
When to prune licorice basil 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 licorice basil
Pinch the topmost pair of leaves and the shoot tip between finger and thumb. When flower spikes emerge, cut the entire spike back to the nearest leaf node with clean scissors. Harvest from the top down, always cutting above a leaf pair.
Licorice Basil needs regular pinching to stay bushy and delay bolting, just like all Ocimum basilicum varieties. Pinch out the central growing tip once plants reach 15–20 cm. Remove flower spikes promptly as soon as they appear — flowering triggers leaf toughening and eventually plant death in this annual herb.
More licorice basil care for British gardens
Care at a glance
- When to prune basil in the UK — the species this cultivar belongs to
- General licorice basil pruning guide
- RHS hardiness ratings explained
Pruning licorice basil in the UK — FAQ
When should I prune licorice basil in the UK?
Prune licorice basil 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 licorice basil in spring or summer in the UK?
There is no nesting-bird restriction that realistically applies to licorice basil, 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 licorice basil?
Pinch the topmost pair of leaves and the shoot tip between finger and thumb. When flower spikes emerge, cut the entire spike back to the nearest leaf node with clean scissors. Harvest from the top down, always cutting above a leaf pair.
How often does licorice basil need pruning in a British garden?
Every 1–2 weeks throughout the growing season. Licorice Basil needs regular pinching to stay bushy and delay bolting, just like all Ocimum basilicum varieties. Pinch out the central growing tip once plants reach 15–20 cm. Remove flower spikes promptly as soon as they appear — flowering triggers leaf toughening and eventually plant death in this annual herb.
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.