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Rocky Mountain Iris (Iris missouriensis)

  • Rocky Mountain Iris (Iris Missouriensis) http://www.sagebud.com/rocky-mountain-iris-iris-missouriensis
    Credit: Britton, N.L., and A. Brown. 1913. An illustrated flora of the northern United States, Canada and the British Possessions. Vol. 1: 538 | USDA [1] | License: PD USDA
  • Rocky Mountain Iris (Iris Missouriensis) http://www.sagebud.com/rocky-mountain-iris-iris-missouriensis
    Credit: Jim Peaco | http://www.nps.gov/a... | License: PD US Government PD US NPS
  • Rocky Mountain Iris (Iris Missouriensis) http://www.sagebud.com/rocky-mountain-iris-iris-missouriensis
    Credit: Bob Greenburg | http://www.nps.gov/a... | License: PD US Government PD US NPS
  • Rocky Mountain Iris (Iris Missouriensis) http://www.sagebud.com/rocky-mountain-iris-iris-missouriensis
    Credit: Dionysia | Self-published work by Dionysia | License: CC-BY-SA-2.5,2.0,1.0 CC-BY-SA-3.0-migrated GFDL
IRMI.jpg

Iris Missouriensis, or more commonly know as Rocky Mountain Iris, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and purple flowers of the genus Iris. It has a rapid growth rate and a height of 1 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is summer, blooms during spring and is somewhat tolerant of shade. Iris Missouriensis or Rocky Mountain Iris's floral region is North America US Lower 48, specifically in the states of Arizona, California, Colorado, Idaho, Minnesota, Montana, North Dakota, Nebraska, New Mexico, Nevada, Oregon, South Dakota, Utah, Washington and Wyoming.

  • Category: Monocot
  • Genus: Iris
  • Family: Iridaceae
  • Order: Liliales
  • Class: Liliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Forb/herb
  • Native Status: L48 (N) CAN (N)
  • State Noxious Status: CA (CW)
  • State Noxious Common Name: CA (western blue flag)
  • PLANTS Invasive Status: STATE WSWS
  • National Wetland Indicator Status: FACW- OBL
  • Regional Wetland Indicator Status: 3(OBL) 4(FACW+) 5(OBL) 7(FACW-) 8(OBL*) 9(FACW+) 0(OBL)
  • Active Growth Period: Summer
  • After Harvest Regrowth Rate: Rapid
  • Allelopath: No
  • Bloat: None
  • C:N Ratio: High
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: No
  • Flower Color: Purple
  • Flower Conspicuous: Yes
  • Foliage Color: Green
  • Foliage Porosity Summer: Porous
  • Foliage Porosity Winter: Porous
  • Foliage Texture: Medium
  • Fruit/Seed Color: Black
  • Fruit/Seed Conspicuous: Yes
  • Growth Form: Colonizing
  • Growth Rate: Rapid
  • Height at 20 Years Maximum (feet): 1
  • Height Mature (feet): 1
  • Leaf Retention: No
  • Lifespan: Short
  • Low Growing Grass: No
  • Resprout Ability: No
  • Shape and Orientation: Erect
  • Toxicity: None
  • Adapted to Coarse Textured Soils: Yes
  • Adapted to Fine Textured Soils: Yes
  • Adapted to Medium Textured Soils: Yes
  • Anaerobic Tolerance: High
  • CaCO3 Tolerance: High
  • Cold Stratification Required: No
  • Drought Tolerance: Low
  • Fertility Requirement: Low
  • Fire Tolerance: High
  • Frost Free Days Minimum: 115
  • Hedge Tolerance: Low
  • Moisture Use: High
  • pH (Minimum): 7
  • pH (Maximum): 8.5
  • Planting Density per Acre Minimum: 1000
  • Planting Density per Acre Maximum: 40000
  • Precipitation (Minimum): 24
  • Precipitation (Maximum): 35
  • Root Depth Minimum (inches): 6
  • Salinity Tolerance: None
  • Shade Tolerance: Intermediate
  • Temperature Minimum (°F): -28
  • Bloom Period: Spring
  • Commercial Availability: Routinely Available
  • Fruit/Seed Abundance: Medium
  • Fruit/Seed Period Begin: Summer
  • Fruit/Seed Period End: Spring
  • Fruit/Seed Persistence: No
  • Propagated by Bare Root: Yes
  • Propagated by Bulbs: Yes
  • Propagated by Container: No
  • Propagated by Corms: Yes
  • Propagated by Cuttings: No
  • Propagated by Seed: Yes
  • Propagated by Sod: No
  • Propagated by Sprigs: No
  • Propagated by Tubers: No
  • Seed per Pound: 19958
  • Seed Spread Rate: Moderate
  • Seedling Vigor: High
  • Small Grain: No
  • Vegetative Spread Rate: Rapid




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