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Hooker's Evening Primrose (Oenothera elata)

  • Hooker's Evening Primrose (Oenothera Elata) http://www.sagebud.com/hookers-evening-primrose-oenothera-elata
    Credit: User:Xemenendura | Own work | License: CC-BY-SA-2.5 CC-BY-SA-3.0-migrated GFDL
  • Hooker's Evening Primrose (Oenothera Elata) http://www.sagebud.com/hookers-evening-primrose-oenothera-elata
    Credit: User:Xemenendura | Own work | License: CC-BY-SA-2.5 CC-BY-SA-3.0-migrated GFDL
  • Hooker's Evening Primrose (Oenothera Elata) http://www.sagebud.com/hookers-evening-primrose-oenothera-elata
    Credit: User:Xemenendura | Own work | License: CC-BY-SA-2.5 CC-BY-SA-3.0-migrated GFDL
  • Hooker's Evening Primrose (Oenothera Elata) http://www.sagebud.com/hookers-evening-primrose-oenothera-elata
    Credit: Stickpen | Own work | License: PD
  • Hooker's Evening Primrose (Oenothera Elata) http://www.sagebud.com/hookers-evening-primrose-oenothera-elata
    Credit: Stickpen | Own work | License: PD
  • Hooker's Evening Primrose (Oenothera Elata) http://www.sagebud.com/hookers-evening-primrose-oenothera-elata
    Credit: Stickpen | Own work | License: PD
OEEL.jpg

Oenothera Elata, or more commonly know as Hooker's Evening Primrose, is a forb/herb (a forb/herb is a non-woody plant that is not a grass) with green foliage and yellow flowers of the genus Oenothera. It has a moderate growth rate and a height of 5 feet at maturity. Its duration is biennial or bi-annual which means it can grow or bloom twice, in the first year and the following year. It's active growth period is spring and summer, blooms during mid summer and is intolerant of shade. Oenothera Elata or Hooker's Evening Primrose's floral region is North America US Lower 48, specifically in the states of Arizona, California, Colorado, Idaho, Montana, New Mexico, Nevada, Oklahoma, Oregon, Texas, Utah, Washington and Wyoming.

  • Category: Dicot
  • Genus: Oenothera
  • Family: Onagraceae
  • Order: Myrtales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Biennial Perennial
  • Growth Habit: Forb/herb
  • Native Status: L48 (N)
  • National Wetland Indicator Status: FACU- FACW
  • Regional Wetland Indicator Status: 1(NI) 2(FACU) 3(FACU-*) 4(NI) 5(FAC) 6(FACW) 7(FACW) 8(FACW) 9(FACW-) 0(FACW)
  • Active Growth Period: Spring and Summer
  • After Harvest Regrowth Rate: None
  • Allelopath: No
  • Bloat: None
  • C:N Ratio: Medium
  • Coppice Potential: No
  • Fall Conspicuous: Yes
  • Fire Resistance: No
  • Flower Color: Yellow
  • Flower Conspicuous: Yes
  • Foliage Color: Green
  • Foliage Porosity Summer: Porous
  • Foliage Porosity Winter: Porous
  • Foliage Texture: Fine
  • Fruit/Seed Color: Brown
  • Fruit/Seed Conspicuous: No
  • Growth Form: Bunch
  • Growth Rate: Moderate
  • Height Mature (feet): 5
  • 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: No
  • Adapted to Medium Textured Soils: Yes
  • Anaerobic Tolerance: Medium
  • CaCO3 Tolerance: Low
  • Cold Stratification Required: No
  • Drought Tolerance: Low
  • Fertility Requirement: Medium
  • Fire Tolerance: High
  • Frost Free Days Minimum: 120
  • Hedge Tolerance: None
  • Moisture Use: High
  • pH (Minimum): 5.5
  • pH (Maximum): 7.5
  • Planting Density per Acre Minimum: 2700
  • Planting Density per Acre Maximum: 4800
  • Precipitation (Minimum): 10
  • Precipitation (Maximum): 25
  • Root Depth Minimum (inches): 8
  • Salinity Tolerance: None
  • Shade Tolerance: Intolerant
  • Temperature Minimum (°F): -23
  • Bloom Period: Mid Summer
  • Commercial Availability: Routinely Available
  • Fruit/Seed Abundance: Medium
  • Fruit/Seed Period Begin: Summer
  • Fruit/Seed Period End: Fall
  • Fruit/Seed Persistence: Yes
  • Propagated by Bare Root: Yes
  • Propagated by Bulbs: No
  • Propagated by Container: No
  • Propagated by Corms: No
  • Propagated by Cuttings: No
  • Propagated by Seed: Yes
  • Propagated by Sod: No
  • Propagated by Sprigs: No
  • Propagated by Tubers: No
  • Seed per Pound: 1400000
  • Seed Spread Rate: Slow
  • Seedling Vigor: Medium
  • Small Grain: No
  • Vegetative Spread Rate: None


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