Answer: Usually crepe myrtles fail to bloom either because they are growing in too much shade or because they are being pruned at the wrong time. Crepe myrtles need full sun all day long or for a bare minimum of half a day. They bloom on new wood or new growth of the season, so any pruning should be done in late winter to early spring. Pruning during the summer will remove flowering wood and flower buds. Also, adequate soil moisture and soil fertility will help them bloom better. I hope this helps you trouble shoot.
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