Iris virginica

Hailing from the eastern part of the state, Southern Blue Flag is one of Oklahoma’s three species of Native Iris. A couple of differences between it and the hybrid German Iris, are that it has no beard associated with its flower, and prefers moist soil rather than dry. It can even be grown in boggy locations. Southern Blue Flag blooms in May and June with flowers of violet blue with yellow and white crested falls. Deer do not seem to care for this native perennial.