Buy Iris 'Violet Queen' (PCI)

Another in the group of wonderfully useful irises, especially loved for their rich, saturated flower colors -- this one has deep violet petals with yellow eyes -- Evergreen, upright and stiff leaves that look good all year. Grows to 9" tall or so, and is easy to tuck in the garden, in sun or part shade where the soil is reasonably well-drained. Very drought tolerant once established and frost hardy to 0F, USDA zone 7.