The larvae feed on species of amorpha and are believed to be three-brooded in southern regions where the butterfly occurs.
"Butterflies Worth Knowing"
Clarence M. Weed
Hard cutting back when full size has been attained would seem to throw fresh vigour into the amorpha, and the flowering is greatly enhanced by such a mode of treatment.
"Hardy Ornamental Flowering Trees and Shrubs"
A. D. Webster