Siren Red is the darkest of the red crape myrtles (as of 2008). Large shrub. Flowers best in full sun and has a high mildew resistance.
Note: Regardless of hardiness zone, all crape myrtles are subject to die-back at temps below 15 degrees. Probability of this happening is increased by pruning in fall or winter. Prune only in earliest Spring. Blooms will be on new wood.