Bottle Gentian is a late-season wildflower whose deep blue flowers never fully open, remaining permanently closed. Only bumblebees are strong enough to force their way inside to reach the pollen and nectar. It blooms in September and October in moist prairies and meadows, providing critical late-season resources for foraging bumblebees.
Best time to see a Bottle Gentian
The best time to see a Bottle Gentian is September, when about 68% of U.S. sightings happen, based on 4,900 research-grade iNaturalist observations.
Not certain it is a Bottle Gentian? What plant is this? walks through what to check first and the lookalikes that catch people out.
Recent Bottle Gentian sightings near you
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