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Cascade Azalea (Rhododendron Albiflorum)

Rhododendron Albiflorum, or more commonly know as Cascade Azalea, is a shrub with green foliage and white flowers of the genus Rhododendron. It has a moderate growth rate and a height of 6 feet at maturity. Its duration is perennial which means it will grow year after year. It’s active growth period is spring and summer, blooms during late summer, is somewhat tolerant of shade and is routinely available commercially. Rhododendron Albiflorum or Cascade Azalea‘s floral region is North America US Lower 48, specifically in the states of Colorado, Idaho, Montana, Oregon and Washington.

       

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Cascade Azalea (Rhododendron Albiflorum)
Credit: J Brew | Rhododendron albiflorum - Rainbow LakeUploaded by Epibase | License: CC-BY-SA-2.0
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)
  • Cascade Azalea (Rhododendron Albiflorum)

Cascade Azalea (Rhododendron Albiflorum) Native Growing Regions

Native States for Cascade Azalea (Rhododendron Albiflorum)
Colorado, Idaho, Montana, Oregon, Washington

Cascade Azalea (Rhododendron Albiflorum) Information

  • Category: Dicot
  • Genus: Rhododendron
  • Family: Ericaceae
  • Order: Ericales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Shrub
  • Native Status: L48 (N) CAN (N)
  • National Wetland Indicator Status: FACU FAC
  • Regional Wetland Indicator Status: 8(FACU) 9(FACU)
  • Active Growth Period: Spring and Summer
  • Allelopath: No
  • Bloat: None
  • C:N Ratio: High
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: No
  • Flower Color: White
  • Flower Conspicuous: Yes
  • Foliage Color: Green
  • Foliage Porosity Summer: Dense
  • Foliage Porosity Winter: Porous
  • Foliage Texture: Coarse
  • Fruit/Seed Color: Black
  • Fruit/Seed Conspicuous: Yes
  • Growth Form: Multiple Stem
  • Growth Rate: Moderate
  • Height at 20 Years Maximum (feet): 6
  • Height Mature (feet): 6
  • Leaf Retention: No
  • Lifespan: Moderate
  • Low Growing Grass: No
  • Resprout Ability: Yes
  • Shape and Orientation: Erect
  • Toxicity: Severe
  • Adapted to Coarse Textured Soils: Yes
  • Adapted to Fine Textured Soils: No
  • Adapted to Medium Textured Soils: Yes
  • Anaerobic Tolerance: None
  • CaCO3 Tolerance: None
  • Cold Stratification Required: No
  • Drought Tolerance: None
  • Fertility Requirement: Medium
  • Fire Tolerance: Medium
  • Frost Free Days Minimum: 200
  • Hedge Tolerance: High
  • Moisture Use: High
  • pH (Minimum): 4.5
  • pH (Maximum): 6.5
  • Planting Density per Acre Minimum: 600
  • Planting Density per Acre Maximum: 1200
  • Precipitation (Minimum): 59
  • Precipitation (Maximum): 100
  • Root Depth Minimum (inches): 12
  • Salinity Tolerance: None
  • Shade Tolerance: Intermediate
  • Temperature Minimum (°F): 7
  • Bloom Period: Late Summer
  • Commercial Availability: Contracting Only
  • Fruit/Seed Abundance: High
  • Fruit/Seed Period Begin: Summer
  • Fruit/Seed Period End: Fall
  • Fruit/Seed Persistence: No
  • Propagated by Bare Root: Yes
  • Propagated by Bulbs: No
  • Propagated by Container: Yes
  • Propagated by Corms: No
  • Propagated by Cuttings: Yes
  • Propagated by Seed: Yes
  • Propagated by Sod: No
  • Propagated by Sprigs: No
  • Propagated by Tubers: No
  • Seed per Pound: 2000000
  • Seed Spread Rate: Rapid
  • Seedling Vigor: Medium
  • Small Grain: No
  • Vegetative Spread Rate: None

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