European Mountain Ash

Sorbus aucuparia

Native to:
Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria, China, Corse, Czechia-Slovakia, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Iran, Ireland, Italy, Kazakhstan, Korea, Krym, Netherlands, North Caucasus, Norway, NW. Balkan Pen., Poland, Portugal, Romania, Russia, Sardegna, Sicilia, Spain, Sweden, Switzerland, Transcaucasus, Türkiye, Türkiye-in-Europe, Turkmenistan, Ukraine

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Taxonomy

Division:
Magnoliophyta | - Flowering plants
Family:
Rosaceae
Genus:
Sorbus
Species:
Sorbus aucuparia
USDA Symbol:
SOAU

Growth Characteristics

Life Cycle:
Perennial
Growth Habit:
Shrub , Tree
Height:
1500 cm
Light Requirements:
Full Sun
Drought Tolerance:
Low
Bloom Months:
may,jun
Bloom Colors:
white, cream

Keystone Species Ranking

Caterpillar Keystone:
★★★★☆ Butterfly & moth species supported by this genus (NWF)

Host Plant for Caterpillars

American plum borer (Euzophera semifuneralis), apple fruit moth (Argyresthia conjugella), Ash Borer (Podosesia syringae), blackthorn dagger (Acronicta pruni), Cnidocampa flavescens, maple-basswood leafroller (Sparganothis pettitana), Phyllonorycter crataegella, three-lined leafroller (Pandemis limitata), Welsh wave (Venusia cambrica), Western tent caterpillar (Malacosoma californica)

Garden & Ecology Notes

Wildlife Value:
birds, small mammals
Fall Color:
yellow, orange, red

Soil Requirements

Soil Type:
moist, well-drained loamy soil
pH:
4.5 - 6.5 (slightly acidic to neutral)
Drainage:
good drainage required
Moisture:
consistently moist
Notes:
prefers nutrient-rich soils in native habitats

Propagation & Germination

Stratification:
Cold/moist stratification required — 60–120 days
Germination Time:
14–60 days
Notes:
Seeds require cold stratification; fresh seed germinates best. Light may improve germination rates.

The above propagation data sourced from Claude AI

ORGHPS Germination Guide: Place on damp paper towel in plastic bag for 6 weeks in fridge - should germinate in cold

Source: Ontario Rock Garden & Hardy Plant Society