Answer: Clematis viticella 'Margaret Hunt' will grow 12'-15', bearing purple or rose purple 2" flowers from June through August. It's a very hardy plant and can be pruned after flowering (in the fall). Your clematis will bloom in about 2 years and will develop blossoms on wood produced in the spring. When pruning, cut the wood back to 2 or 3 buds so you'll have some bloom each year.
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