Porcelain blue bottle-like flowers (1 to 1 1/2 inch) from August through early October seem perpetually closed & change to blue-violet with age, glossy leaves up to 4 - long in a whorl below the flowers, clay tolerant, good rain garden plant, likes acid soil. It's fun to watch bumble bees muscle their way into the flowers to pollinate them.
1-2 foot tall
Plant Hardiness Zones: 4a-8b
Native Range: ME south to the mountains of NC & TN. Rare in NY
Germination - Moderately Difficult: Cold stratify 8 weeks, surface sow
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