Gardening websites such as GardeningKnowHow.com and Gardenality.com offer tips and tutorials for pruning crepe myrtle trees. Other lifestyle sites such as SouthernLiving.com also provide information about crepe myrtles and the proper care and pruning of the trees.
Gardening websites recommend owners prune crepe myrtles in the late winter or early spring. Pruning in the fall can encourage weak branches to grow during warm periods, which are susceptible to bending and breaking. Gardeners are warned against overpruning of crepe myrtles, which creates "knuckles" that interfere with the blooming and natural shape of the tree. A number of step-by-step video tutorials on pruning crepe myrtles are available at YouTube.com.