The Orange Sulphur, also called the Alfalfa Butterfly, is one of North America's most abundant butterflies, with males displaying vivid orange wings bordered in black. Females occur in both yellow and white forms, and adults often congregate in large numbers at moist soil or wet sand. Its success is partly due to the widespread cultivation of alfalfa, the primary larval host.
Best time to see a Orange Sulphur
The best time to see a Orange Sulphur is March–August, when about 61% of U.S. sightings happen, based on 50,388 research-grade iNaturalist observations.
Not certain it is a Orange Sulphur? What bug is this? walks through what to check first and the lookalikes that catch people out.
Recent Orange Sulphur sightings near you
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