Lapland Rosebay (Rhododendron lapponicum)

  • Lapland Rosebay (Rhododendron Lapponicum)
    Credit: Carl Axel Magnus Lindman (1856-1928) | ęBilder ur Nordens F... | License: PD Old PD-Art (PD-old)
  • Lapland Rosebay (Rhododendron Lapponicum)
    Credit: Eaglestein | Own work | License: CC-BY-SA-3.0 GFDL
  • Lapland Rosebay (Rhododendron Lapponicum)
    Credit: Ole Jonny Larsen | Own work | License: PD
  • Lapland Rosebay (Rhododendron Lapponicum)
    Credit: Ansgar Walk | photo taken by Ansgar Walk | License: CC-BY-SA-2.5

Rhododendron Lapponicum, or more commonly know as Lapland Rosebay, is a shrub with green foliage and purple flowers of the genus Rhododendron. It has a moderate growth rate and a height of 3 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is spring, blooms during late spring and is tolerant of shade. Rhododendron Lapponicum or Lapland Rosebay's floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Connecticut, Maine, New Hampshire, New York and Wisconsin.

  • Category: Dicot
  • Genus: Rhododendron
  • Family: Ericaceae
  • Order: Ericales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Shrub
  • Native Status: L48 (N) AK (N) CAN (N) GL (N)
  • State T/E Status: ME (T) NY (E) WI (E)
  • State T/E Common Name: ME (Lapland rosebay) NY (Lapland rosebay) WI (Lapland azalea)
  • National Wetland Indicator Status: UPL FACW-
  • Regional Wetland Indicator Status: 1(UPL) 3(FACW-) A(FAC)
  • Active Growth Period: Spring
  • After Harvest Regrowth Rate: None
  • Allelopath: No
  • Bloat: None
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: No
  • Flower Color: Purple
  • Flower Conspicuous: Yes
  • Foliage Color: Green
  • Foliage Texture: Coarse
  • Fruit/Seed Color: Yellow
  • Fruit/Seed Conspicuous: No
  • Growth Rate: Moderate
  • Height at 20 Years Maximum (feet): 4
  • Height Mature (feet): 3
  • Leaf Retention: Yes
  • Lifespan: Short
  • Low Growing Grass: No
  • Resprout Ability: Yes
  • Shape and Orientation: Prostrate
  • Toxicity: Severe
  • Adapted to Coarse Textured Soils: Yes
  • Adapted to Fine Textured Soils: No
  • Adapted to Medium Textured Soils: No
  • Cold Stratification Required: Yes
  • Fertility Requirement: Medium
  • Fire Tolerance: Medium
  • Hedge Tolerance: Low
  • pH (Minimum): 4.5
  • pH (Maximum): 5.5
  • Planting Density per Acre Minimum: 640
  • Planting Density per Acre Maximum: 1280
  • Root Depth Minimum (inches): 24
  • Shade Tolerance: Tolerant
  • Temperature Minimum (°F): -30
  • Bloom Period: Late Spring
  • Fruit/Seed Persistence: Yes
  • Propagated by Bare Root: No
  • Propagated by Bulbs: No
  • Propagated by Container: No
  • Propagated by Corms: Yes
  • Propagated by Cuttings: Yes
  • Propagated by Seed: Yes
  • Propagated by Sod: No
  • Propagated by Sprigs: Yes
  • Propagated by Tubers: No
  • Small Grain: No
  • Vegetative Spread Rate: Moderate

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