Species PlantsClosed Gentian

Closed Gentian

Gentiana clausa

UncommonPlant
Illustration of Closed Gentian (Gentiana clausa)

The Closed Gentian is one of autumn's most striking wildflowers — its rich blue-violet flowers never open, remaining permanently closed in a tight, bottle-like shape. Only strong bumblebees are powerful enough to force their way inside to reach the nectar and pollen. It blooms in late summer and autumn when few other wildflowers remain, making it a vital late-season resource for pollinators.

Habitat
Moist meadows, stream banks, and open woods of the northeastern United States
Diet
Nectar accessible only to bumblebees strong enough to pry open the flowers
How common
Uncommon

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