Bird Wing Passionflower

Sun or shade. This native vine has small green flowers with odd wing-like leaves. Uncommon in the nursery trade, it may volunteer in yards in San Antonio, particularly in drier northwest areas. Passionflower is the larval food source for the orange-and-black Gulf Fritillary butterfly. The caterpillars look spiky but are harmless – let them munch away on the leaves if you want beautiful orange butterflies in summer and fall.