This native iris is common across Illinois in wetland habitats with full sun. It features large showy flowers in late spring and interesting sword-like vegetation.
Pollinator Type
Bees, butterflies, hummingbirds
Plant Type
Herbaceous perennial
Zone
5 to 9
Height
1 to 3 ft.
Spread
1 to 3 ft.
Light
Full Sun
Moisture Requirement
Medium Soil, Wet Soil
Bloom Color
White, Yellow, Purple
Bloom Time
May, June
Design Considerations
This plant is best grown with consistent moisture and full sun. In partial shade, often fails to flower. Slowly spreads by rhizomes to form colonies It is an excellent rain garden species, ideal for the edges of ponds or streams.
Care and Maintenance
Optimal growing conditions can be difficult to maintain in the home landscape. Consistent soil moisture and rich, organic soils are ideal. Readily forms colonies in optimal conditions. Divide plants when overcrowded to maintain colony vitality and full flowering display.
Pest and Diseases
No major issues.
Establishment and Propagation
Divide in early fall as leaves begin to turn yellow. Often commercially available as potted or bare root plants. Establishment from seed can be tricky unless optimal seed storage requirements were maintained.
Commercial Availability
Occasionally available.
Alternative Plant Selections
Northern Blue Flag Iris, Dwarf Crested Iris
Native Status
Illinois native statewide.
Fall Color
Insignificant
Growth habit
Clump-forming herbaceous plants that spreads through rhizomes.
Number of Caterpillars that Use this as a Host Plant
