The larvae feed on various legumes and clovers including alfalfa, and may become a pest problem in alfalfa fields. In northern California there are occasional mass outbreaks where hordes of the butterflies are flying across roadways and being killed as vehicles run into them. Females deposit eggs singly by gluing them to the top of the leaf. Larvae are capable of eating entire leaves but often eat only part of one before moving onto a different leaf. There will be several generations each year and the pupa overwinters.
In a landscape setting there is no need to control these butterflies and damage to any ornamental leguminous plants is unlikely.