Tansy Ragwort is a biennial plant with bright yellow flowers and deeply lobed leaves. It is toxic to livestock and can cause liver damage if consumed. It spreads rapidly in pastures and roadsides.
Best time to see a Tansy Ragwort
The best time to see a Tansy Ragwort is June–August, when about 60% of U.S. sightings happen, based on 8,380 research-grade iNaturalist observations.
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