How to Prune Maclaren St John's wort?
Keep pruning to a minimum: remove dead, damaged or unwanted growth; if shaping is needed, trim lightly after flowering.

Maclaren St John's wort · Hypericum maclarenii
Grow in any moist but well-drained soil in sun or partial shade
Keep pruning to a minimum: remove dead, damaged or unwanted growth; if shaping is needed, trim lightly after flowering.