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Yellow Flag
Scientific Name: Iris pseudacorus L.
Family: Iridaceae

Show Larger Picture Britton, N.L., and A. Brown. 1913. Illustrated flora of the northern states and Canada. Vol. 1: 540. Courtesy of Kentucky Native Plant Society.

Recommended Temperature Zone: sunset: All zones USDA: 5 to 9 Sun Exposure: Full sun to light shade Origin: Europe across to Turkey, Iran and Siberia Growth Habits: Herbaceous perennial, flower stems can reach up to 6 feet (1.8 m), 18 inches spread (45 cm), spreading rapidly Watering Needs: Wetland plant, drought resistant, prefers a slightly acid soil Propagation: Division of rhizome in early fall

Blooming Habits:
Masses of bright yellow flowers from early Spring through to mid-Summer, the date depending on the latitude.