Iris ensata Variegata is an upright, clump-forming deciduous perennial about 20 to 30 inches tall and 5 to 20 inches wide. Narrow gray-green leaves striped creamy white provide variegated color from spring through fall. Deep purple flowers with a reddish sheen rise above the foliage from May through August, and their falls are vivid cerise flushed deep purple.
Grow it in full sun or partial shade in deep, humus-rich acidic clay or loam. Keep the soil moist to wet during active growth. The plant thrives at pond and stream margins and can stand in shallow water during the growing season, but reduce moisture in winter to prevent root rot. Its upright foliage suits bog gardens, damp borders, woodland edges, and large outdoor containers.
Space plants about 20 inches apart. Divide established clumps from midsummer to early autumn and replant them immediately. Cut back after flowering and remove old foliage before new leaves emerge. The flowers attract butterflies and can be cut, while deer usually avoid the plant. Monitor for slugs, snails, thrips, aphid-borne viruses, bacterial soft rot, and gray mold. Wear gloves because the plant is harmful if eaten by people and pets.