This hybrid with its heavy B. australis influence was selected for its incredibly saturated dark violet-purple flowers on a plant that otherwise resembles B. australis. Peak bloom is in early June in USDA Zone 5. Flowers give way to a vigorous plant with attractive blue-green foliage. The original plant (6 years old) was 45" tall x 56" wide in the spring and 68" wide in late autumn of 2010.
USDA Zones 4 to 7 at least. Introduction #CG07-002.
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