How to prune caryopteris incana

Early spring as buds break (March–April). Cut all previous-season stems back to a low woody framework — approximately 10 cm above the ground — keeping two to three visible buds per stem. Avoid pruning into old wood with no buds. In mild climates, a light autumn tidy is acceptable, but full pruning should wait until spring.

Annually every spring. Blue spirea blooms on current-year wood and must be cut back hard each spring to stay compact and flower freely. Left unpruned it becomes a leggy, woody shrub. Cut all stems back to within 10 cm of the base in early spring, just as new buds break, for the best summer flower display.

Cut all previous-season stems back to a low woody framework — approximately 10 cm above the ground — keeping two to three visible buds per stem. Avoid pruning into old wood with no buds. In mild climates, a light autumn tidy is acceptable, but full pruning should wait until spring.