Western Mountain Ash

Scientific Name: Sorbus sitchensis M. Roem. var. grayi (Wenzig) C.L. Hitchc.


Classification: Plantae/ Tracheobionta / Spermatophyta / Magnoliophyta / Magnoliopsida / Rosidae / Rosales / Rosaceae / Sorbus L./ Sorbus sitchensis M. Roem. var. grayi (Wenzig) C.L. Hitchc.

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General Information
Usda SymbolSOSIG
GroupDicot
Life CyclePerennial
Growth HabitsShrubTree,
Native LocationsSOSIG

Plant Guide

Use soil moisture sensors to measure the soil moisture of Western Mountain Ash.

Plant Traits

Growth Requirements

Temperature, Minimum (°F)-28
Adapted to Coarse Textured SoilsYes
Adapted to Fine Textured SoilsYes
Adapted to Medium Textured SoilsYes
Anaerobic ToleranceNone
CaCO3 ToleranceNone
Cold Stratification RequiredYes
Drought ToleranceLow
Fertility RequirementMedium
Fire ToleranceLow
Frost Free Days, Minimum100
Hedge ToleranceLow
Moisture UseMedium
pH, Maximum7.2
pH, Minimum6.0
Planting Density per Acre, Maxim1700
Planting Density per Acre, Minim700
Precipitation, Maximum40
Precipitation, Minimum20
Root Depth, Minimum (inches)16
Salinity ToleranceNone
Shade ToleranceIntolerant


Morphology/Physiology

BloatNone
ToxicityNone
Resprout AbilityYes
Shape and OrientationErect
Active Growth PeriodSpring and Summer
C:N RatioHigh
Coppice PotentialYes
Fall ConspicuousYes
Fire ResistantNo
Flower ColorWhite
Flower ConspicuousYes
Foliage ColorDark Green
Foliage Porosity SummerModerate
Foliage Porosity WinterPorous
Foliage TextureFine
Fruit/Seed ConspicuousYes
Nitrogen FixationNone
Low Growing GrassNo
LifespanModerate
Leaf RetentionNo
Known AllelopathNo
Height, Mature (feet)15.0
Height at 20 Years, Maximum (fee15
Growth RateSlow
Growth FormSingle Stem
Fruit/Seed ColorRed


Reproduction

Vegetative Spread RateModerate
Small GrainNo
Seedling VigorHigh
Seed Spread RateModerate
Fruit/Seed Period EndFall
Seed per Pound140000
Propagated by TubersNo
Propagated by SprigsNo
Propagated by SodNo
Propagated by SeedYes
Propagated by CormNo
Propagated by ContainerYes
Propagated by BulbNo
Propagated by Bare RootYes
Fruit/Seed PersistenceYes
Fruit/Seed Period BeginSummer
Fruit/Seed AbundanceHigh
Commercial AvailabilityContracting Only
Bloom PeriodLate Spring
Propagated by CuttingsNo


Suitability/Use

Veneer ProductNo
Pulpwood ProductNo
Post ProductNo
Palatable HumanNo
Palatable Graze AnimalLow
Palatable Browse AnimalLow
Nursery Stock ProductNo
Naval Store ProductNo
Lumber ProductNo
Fodder ProductNo
Christmas Tree ProductNo
Berry/Nut/Seed ProductNo
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