Can mature berberis thunbergii be hard pruned
Mature b.thunberii now over 3m high - is it possible to prune hard back to say 1m?
Certified GKH Gardening Expert
This article will tell you how to do rejuvenation pruning. It consists of removing the oldest canes first to the ground, thereby encouraging new growth. Cutting off the top will just enourage more leggy growth.