When to prune plectranthus scutellarioides 'kong rose' in the UK

Prune plectranthus scutellarioides 'kong rose' 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.

Pruning itself is not illegal, but destroying an active nest is. Under the Wildlife and Countryside Act 1981 it is a criminal offence to damage or destroy the nest of any wild bird while it is being built or in use, and the RHS treats the nesting season as March to August, sometimes longer. Check plectranthus scutellarioides 'kong rose' for nests before cutting, and if you find an active one, leave that part of the plant until the birds have fledged.

Snap or snip flower spikes at their base as soon as they emerge. Pinch growing stem tips back by 1–2 leaf pairs every few weeks to force lateral branching and maintain the bold foliage display.

Every 2–4 weeks for tip-pinching; remove flower spikes immediately as they appear. Coleus 'Kong Rose' is grown for its large ornamental leaves, not flowers. Pinch out flower spikes as they appear to keep energy in foliage and prevent the plant from going to seed, which causes decline. Pinch stem tips regularly throughout the season to maintain a bushy, full shape rather than a tall, sparse one.

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.