When to prune lamprocapnos spectabilis 'gold heart' in the UK

Prune lamprocapnos spectabilis 'gold heart' 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.

There is no nesting-bird restriction that realistically applies to lamprocapnos spectabilis 'gold heart', 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.

Cut stems to within a few inches of the ground when dormancy is complete. Deadhead by removing flower stems at their base. The gold foliage is a key feature, so let it stand as long as it remains healthy rather than removing it prematurely.

Once annually when fully dormant in summer; deadhead after flowering if desired. 'Gold Heart' has the same growth cycle as the species, with golden foliage as the main ornamental feature before summer dormancy. Deadhead spent flowers to direct energy into the distinctive leaves. Cut all stems to ground level only once the golden foliage has fully yellowed and died. Do not prune while leaves remain green.

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.