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'Raven' allures with dark purple flowers from late spring to early summer, inflorescences rise above the green clump-forming foliage. Occasionally leaves will have dark chocolate-purple spots at lobe bases but most often a full green. Seedling selection from Rainforest Gardens, BC.
Mature size: 1.5-2.5 ft T x 1.5 ft W
Minimum temperature: -20° F
Properties/conditions: