The amethyst-hued blooms of Purely Purple are equally at home in a classic or contemporary garden design, completing the look wherever it is planted. Masses of vibrant purple blooms balance with elegant black foliage, creating a stunning best-dressed worthy ensemble. Purely Purple won't steal the show, though, growing to a maximum size of 10 ft. to 12 ft. tall and 8 ft. W. The blooms reach their productivity peak during the summer and fall months. This variety has been described as having an intermediate growth habit and can be used as a specimen or in mass plantings. Crape Myrtles look particularly nice when lining driveways or fences, and can also be planted in a container on your deck or patio as long as the container is at least 12 in. Dia. These crape myrtles are drought tolerant, mildew resistant, and low-maintenance. The Black Diamond is hardy in Zones 7-9.