Don't prune in summer or fall. Pruning crape myrtles in summer or fall can stress the tree. It's already dealing with heat and possibly drought, so don’t stress your tree further by pruning it.
I usually wait until mid-January to write something on this topic but this week I saw my first severe pruning of a crape myrtle for this dormant season earlier this month. So, instead of visions ...
it's time to start pruning, it's best to resist the urge to cut back a crepe myrtle in the fall as soon as the leaves have fallen. Because crepe myrtles bloom on new growth and don't begin ...