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Common Name: Wild Iris / Rocky Mountain Iris

Scientific Name: Iris missouriensis

Native / Introduced: Native

Main Uses:

~Wildlife habitat restoration

~Wildflower plantings

Height: 10 – 18 inches

Colors: Light violet and white

Flowering Season: Late spring

Soil Types: Most damp soils

Tolerances: Damp soil

Sun or Shade: Partial shade

Minimum Precipitation: 18 - 24 inches

Lifecycle: Perennial

Planting Seed Rate: 33 - 43 lbs/acre

Estimated Seeds Per Pound: 19,900

Optimal Planting Season: Fall

Planting Depth: 1/2 inch deep

Stratification Requirements: Cold, 30+ days

Category: Forbs



Wild Iris, also known as Rocky Mountain Iris or Western Blue Flag, is a versatile plant that can thrive in various soil types, particularly those with moderate to high moisture levels. It thrives in both sunny and shaded conditions and is characterized by its tuberous rhizomes. This plant is highly valued for its contribution to wildflower planting, riparian habitats, and wildlife habitats. Wild Iris is known for its prolific and long-lasting blooms, requiring minimal maintenance while producing an abundance of seeds. Its attractive flowers also serve as a magnet for insects and hummingbirds, enhancing biodiversity in gardens and natural settings.


Wild Iris is a versatile choice, capable of adapting to shade conditions, making it an excellent option for various landscaping and habitat restoration projects, including areas on the north side of walls or fences. Fresh iris roots and rhizomes can be toxic to humans and are not suitable for consumption by wildlife or livestock.



NRCS Plant Profile:

NRCS Plant Guide:


Photo Credits: Kimon Berlin and Tom Koerner

Wild Iris / Rocky Mountain Iris


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