Gumweed is a robust native wildflower of dry plains, roadsides, and disturbed areas across the Great Plains and West, recognized by its yellow flowers with reflexed bracts dripping a white, sticky resin. The resinous flower heads were used medicinally by many indigenous peoples for respiratory ailments. Many specialist insects gather pollen and nectar from its flowers.
Best time to see a Gumweed
The best time to see a Gumweed is July–September, when about 71% of U.S. sightings happen, based on 8,642 research-grade iNaturalist observations.
Not certain it is a Gumweed? What plant is this? walks through what to check first and the lookalikes that catch people out.
Recent Gumweed sightings near you
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