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

stinking St John's wort · Hypericum hircinum
Also known as: stinking tutsan
Grows well in moist but well-drained soil in sun or partial shade, with shelter from cold, drying winds
Usually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.