Caterpillar hosts plants: leaves of plants in the Leguminosae family including: alfalfa, Medicago; indigo, Baptisia; pea, Pisum; vetch, Vicia; white clover, Trifolium; white sweet clover, Melilotus
Habitat: open areas, especially clover and alfalfa fields, meadows, mowed fields, road edges, vacant lots
Notes: females lay eggs singly on top of leaves, males patrol for females, hibernates as chrysalis, one of the most widespread and common butterflies in North America.