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Northern Mountain Ash (Sorbus decora)

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Sorbus Decora, or more commonly know as Northern Mountain Ash, is a tree shrub with gray-green foliage and white flowers of the genus Sorbus. It has a slow growth rate and a height of 40 feet at maturity. Its duration is perennial which means it will grow year after year. It's active growth period is summer and fall, blooms during early summer and is tolerant of shade. Sorbus Decora or Northern Mountain Ash's floral region is North America US Lower 48, specifically in the states of Connecticut, Iowa, Illinois, Indiana, Massachusetts, Maine, Michigan, Minnesota, New Hampshire, New York, Ohio, Pennsylvania, Vermont and Wisconsin.

  • Category: Dicot
  • Genus: Sorbus
  • Family: Rosaceae
  • Order: Rosales
  • Class: Magnoliopsida
  • Division: Magnoliophyta
  • Duration: Perennial
  • Growth Habit: Tree Shrub
  • Native Status: L48 (N) CAN (N) GL (N) SPM (N)
  • State T/E Status: IN (X) MA (E) OH (E) PA (E)
  • State T/E Common Name: IN (northern mountain-ash) MA (northern mountain-ash) OH (western mountain-ash) PA (showy mountain-ash)
  • National Wetland Indicator Status: UPL FAC
  • Regional Wetland Indicator Status: 1(FAC*) 3(UPL)
  • Active Growth Period: Summer and Fall
  • After Harvest Regrowth Rate: None
  • Allelopath: No
  • Bloat: None
  • C:N Ratio: High
  • Coppice Potential: No
  • Fall Conspicuous: Yes
  • Fire Resistance: No
  • Flower Color: White
  • Flower Conspicuous: Yes
  • Foliage Color: Gray-Green
  • Foliage Porosity Summer: Moderate
  • Foliage Porosity Winter: Porous
  • Foliage Texture: Fine
  • Fruit/Seed Color: Red
  • Fruit/Seed Conspicuous: Yes
  • Growth Form: Single Crown
  • Growth Rate: Slow
  • Height at 20 Years Maximum (feet): 60
  • Height Mature (feet): 40
  • Leaf Retention: No
  • Lifespan: Short
  • Low Growing Grass: No
  • Resprout Ability: No
  • Shape and Orientation: Oval
  • Toxicity: Slight
  • Adapted to Coarse Textured Soils: No
  • Adapted to Fine Textured Soils: Yes
  • Adapted to Medium Textured Soils: No
  • Anaerobic Tolerance: Low
  • CaCO3 Tolerance: Low
  • Cold Stratification Required: Yes
  • Drought Tolerance: Low
  • Fertility Requirement: Medium
  • Fire Tolerance: Medium
  • Frost Free Days Minimum: 88
  • Hedge Tolerance: Low
  • Moisture Use: Low
  • pH (Minimum): 4
  • pH (Maximum): 7
  • Planting Density per Acre Minimum: 320
  • Planting Density per Acre Maximum: 1200
  • Precipitation (Minimum): 16
  • Precipitation (Maximum): 51
  • Root Depth Minimum (inches): 36
  • Salinity Tolerance: None
  • Shade Tolerance: Tolerant
  • Temperature Minimum (°F): -50
  • Bloom Period: Early Summer
  • Commercial Availability: Routinely Available
  • Fruit/Seed Abundance: High
  • Fruit/Seed Period Begin: Fall
  • Fruit/Seed Period End: Fall
  • Fruit/Seed Persistence: Yes
  • Propagated by Bare Root: No
  • 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: 15181
  • Seed Spread Rate: Moderate
  • Seedling Vigor: High
  • Small Grain: No
  • Vegetative Spread Rate: Slow




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