Advice on pruning trees and shrubs
+2
Related Discussions
Suggested Project Book
what trees and shrubs,as there are different methods used and time done
They are all different, I suggest you buy or borrow a good book which should tell you when and how to prune.
prune after flowering, don't take any more than 1/3 of the bush/tree at any given time
Here you go! Basic Guidelines for Pruning Trees and Shrubs — Publications