Kent,
United Kingdom 
how hard can I prune my mahonia japonica? It is about 25 years old
22 Jul, 2010
Previous question
Kent,
United Kingdom
how hard can I prune my mahonia japonica? It is about 25 years old
22 Jul, 2010
Previous question
If its looking too big, tatty or bare on the stems, you will need to risk hard pruning to encourage regeneration, but its a risk, and should not be done now, but in the spring, immediately after flowering.
23 Jul, 2010