Bitterweed is an annual with bright yellow flowers and a bitter taste that deters herbivores. It is often found in disturbed areas and is known for its resilience in poor soils. The plant's vibrant blooms add color to fields and roadsides.
Best time to see a Bitterweed
The best time to see a Bitterweed is June–September, when about 61% of U.S. sightings happen, based on 20,447 research-grade iNaturalist observations.
Not certain it is a Bitterweed? What plant is this? walks through what to check first and the lookalikes that catch people out.
Recent Bitterweed sightings near you
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