bushes

Chicken and egg question. You need to know where the bush flowers. On old wood? then you prune after flowering to encourage the bush to produce branches for the following season.(Forsythia and Philadelphus are prime examples) New wood? Then you prune in spring and remove all the old wood to encourage new growth to flower the same season. Examples are Buddleja davidii and Roses).

Some while back, I wrote two blogs on pruning - check them out, they may answer your qeustions