"The Clematis æJackmanÆ, Clematis x jackmanii, is the best blooming Clematis in its family. With dark purple flowers that bloom in July, it ranges in height of 7-10Æ and has a spread of 3Æ. The foliage is dark green and makes a great contrast with the flower color. Clematis æJackmaniiÆ needs a supporting structure to grow properly but will also grow over large shrubs. The tops of Clematis prefer full sun while their roots prefer a cool, shady area. It is best to heavily mulch the root zone to provide this cool, shady area."