Posted: 16/07/2015 at 23:26
If this remains a question.
prune in summer to prolong and re energise perennial flowering in late summer and to keep certain perennials sturdy.
to promote fruit formation and reduce growth by late summer pruning in apples, pears, etc
to control size of shrubs by pruning after flowering and to promote flower formation for the following year.
to encourage air flow in fruit bushes like gooseberries