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From early summer to late summer, whimsical inflated buds of pale purple-blue open into shallow-cupped star flowers with dark blue veining. Its golden-yellow fall leaf color is also of merit. Native to slopes and meadows of NE Asia, it stands to reason it is extremely cold-tolerant.
Mature size: 18 in T x 12 in W
Minimum temperature: -40° F
Properties/conditions: