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Surprisingly hardy. Has survived two winters here in zone 6b (lows of 9F and 4F) with heavy mulching. Starts flowering second half of Sep...Read Moretember into mid-October, withstands light frosts.
Surprisingly hardy. Has survived two winters here in zone 6b (lows of 9F and 4F) with heavy mulching. Starts flowering second half of Sep...Read More