How to Prune heath-leaved St John's wort?
Usually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.

heath-leaved St John's wort · Hypericum coris
Grow in well-drained soil in full sun. Ideal for rock garden, gravel and scree gardens. Avoid exposed areas with cold, drying winds
Usually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.