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
 
Description:
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.
 
Resources:
NRCS Plant Profile: https://plants.usda.gov/home/plantProfile?symbol=IRMI
NRCS Plant Guide: https://plants.usda.gov/DocumentLibrary/plantguide/pdf/pg_irmi.pdf
 
Photo Credits: Kimon Berlin and Tom Koerner