Crape Myrtle Trees are summer bloomers, and only have blooms on their new growth. Once they break dormancy this new growth will rapidly emerge. It’s good to remove a few of the older branches to make way for the new growth. Also, it’s good to lightly prune Crape Myrtle trees in the late winter or early spring in order to keep them neatly shaped. However, most crape myrtles naturally grow into beautiful forms.