Iris versicolor ‘Whodunit’ (Blue Flag)

Iris versicolor ‘Whodunit’ (Blue Flag) is a rhizomatous perennial forming a clump of narrow, upright, sword-shaped, blue-green leaves. Branched stems rise from the clump in late spring to early summer, each of them boasting 3-5 violet-blue flowers adorned with bold purple veining and mostly white falls. Very handsome in and out of bloom, Blue Flag is a central landscape plant for the water garden, near ponds and streams. This marginal aquatic plant is also a lovely addition to moist borders.

• Grows up to 24-30 in. tall (60-75 cm) and 18-24 in. wide (45-60 cm). Clumps will spread steadily over time to form colonies.
• Performs best in full sun or part shade, in acidic, moist to wet, humus-rich soils. This iris may be grown in up to 2-4 in. (5-10 cm) of shallow standing water.
• A welcomed addition to beds and borders, cottage gardens, bog gardens, rain gardens, water gardens and near streams or ponds, where it will provide excellent color contrast.
• Propagate by division from mid-summer to early autumn.
• Virtually disease free. Keep an eye out for sawflies. Deer resistant.
• All parts may cause discomfort if ingested. Wear gloves and other protective equipment when handling.
• Toxic to dogs, toxic to cats, toxic to horses.
• Native to the eastern United States.