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Gray Alder (Alnus Incana)

Alnus Incana, or more commonly know as Gray Alder, is a tree shrub with green foliage of the genus Alnus. It has a rapid growth rate and a height of 25 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 spring and is somewhat tolerant of shade. Alnus Incana or Gray Alder‘s floral region is North America US Lower 48 and Alaska, specifically in the states of Alaska, Arizona, California, Colorado, Connecticut, Iowa, Idaho, Illinois, Indiana, Massachusetts, Maryland, Maine, Michigan, Minnesota, Montana, North Dakota, New Hampshire, New Jersey, New Mexico, Nevada, New York, Ohio, Oregon, Pennsylvania, Rhode Island, Utah, Virginia, Vermont, Washington, Wisconsin and Wyoming.

       

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Gray Alder (Alnus Incana)
Credit: Carl Axel Magnus Lindman (1856-1928) | «Bilder ur Nordens Flora» Stockholm | License: PD Old PD-Art (PD-old)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)
  • Gray Alder (Alnus Incana)

Gray Alder (Alnus Incana) Native Growing Regions

Native States for Gray Alder (Alnus Incana)
Alaska, Arizona, California, Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Maine, Maryland, Massachusetts, Michigan, Minnesota, Montana, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Dakota, Ohio, Oregon, Pennsylvania, Rhode Island, Utah, Vermont, Virginia, Washington, Wisconsin, Wyoming

Gray Alder (Alnus Incana) Information

  • Category: Dicot
  • Genus: Alnus
  • Family: Betulaceae
  • Order: Fagales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Tree Shrub
  • Native Status: L48 (N) AK (N) CAN (N) SPM (N)
  • National Wetland Indicator Status: FACU FACW
  • Regional Wetland Indicator Status: 1(NI) 2(NI) 3(FACU) 4(FACW) 7(NI) 8(FACW) 9(FACW) 0(NI) A(FAC)
  • Active Growth Period: Spring and Summer
  • Allelopath: No
  • C:N Ratio: High
  • Coppice Potential: No
  • Fall Conspicuous: No
  • Fire Resistance: No
  • Flower Conspicuous: No
  • Foliage Color: Green
  • Foliage Porosity Summer: Moderate
  • Foliage Porosity Winter: Porous
  • Foliage Texture: Coarse
  • Fruit/Seed Color: Brown
  • Fruit/Seed Conspicuous: No
  • Growth Form: Thicket Forming
  • Growth Rate: Rapid
  • Height at 20 Years Maximum (feet): 15
  • Height Mature (feet): 25
  • Leaf Retention: No
  • Lifespan: Short
  • Low Growing Grass: No
  • Nitrogen Fixation: Medium
  • 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: Low
  • Cold Stratification Required: Yes
  • Drought Tolerance: Low
  • Fertility Requirement: Medium
  • Fire Tolerance: High
  • Frost Free Days Minimum: 100
  • Hedge Tolerance: None
  • Moisture Use: High
  • pH (Minimum): 5
  • pH (Maximum): 7
  • Planting Density per Acre Minimum: 300
  • Planting Density per Acre Maximum: 1200
  • Precipitation (Minimum): 32
  • Precipitation (Maximum): 60
  • Root Depth Minimum (inches): 24
  • Salinity Tolerance: None
  • Shade Tolerance: Intermediate
  • Temperature Minimum (°F): -33
  • Bloom Period: Spring
  • Commercial Availability: Routinely Available
  • Fruit/Seed Abundance: Low
  • Fruit/Seed Period Begin: Spring
  • Fruit/Seed Period End: Summer
  • Fruit/Seed Persistence: No
  • Propagated by Bare Root: Yes
  • Propagated by Bulbs: No
  • Propagated by Container: Yes
  • 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: 1084250
  • Seed Spread Rate: Slow
  • Seedling Vigor: Low
  • Small Grain: No
  • Vegetative Spread Rate: Slow

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