How to Prune Mahonia microphylla?
Usually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.

Mahonia microphylla · Mahonia microphylla
Grow in any well-drained soil in partial or deep shade; will tolerate a sunny position if the soil is not too dry. Mahonia don’t respond well to nitrogen rich fertilisers but do appreciate an annual mulch with well-rotted manure or garden compost in autumn. Water in very dry periods – water well if needed but not often
Usually little pruning is needed. Lightly shape if necessary, removing dead, damaged or diseased shoots. Prune after flowering.