'B.O. Worcester' clematis Description
Photo courtesy of Alana Strang
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Blue-violet with white stamens. 6 petals. Average diameter 6". Semi-double to double bloom form. Late summer to midautumn.
Height of 6' to 8' (185 to 245 cm).
USDA zone 4b through 9b. Plant in sun or partial shade. Suitable for growing in a container. This plant blooms twice. It blooms on the previous year's growth, so resist the urge to prune it in early spring. However, if you garden in a place with cold winters, Mother Nature will more than likely prune the plant for you. It will bloom a second time on new growth.