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

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