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Sorbus koehneana (Koehne mountain ash)

Beginner
skill rating
1 hour care
per year
5m
Max height
6m
Max spread
10-20 years
To maturity
Low
Toxicity

Plant details

Botanical name

Sorbus koehneana

Other names

Koehne mountain ash

Genus

Sorbus Sorbus

Species

S. koehneana - S. koehneana is a spreading, deciduous shrub or small tree with pinnate leaves divided into numerous, oblong to ovate, sharply toothed, dark green leaflets turning orange-red to reddish-purple in autumn. Small corymbs of white flowers in late spring are followed by spherical, white fruit with red stalks.


Sorbus koehneana is: Deciduous

Habit

Compact, Spreading

Toxicity

Fruit may cause stomach upset.

Flower

White in Spring

Foliage

Dark-green in Spring; Dark-green in Summer; Reddish-purple, Orange-red in Autumn

How to care

Watch out for

Specific pests

Aphids , Blister mite , Sawflies Aphids , Blister mite , Sawflies

Apple and pear canker , Fireblight Apple and pear canker , Fireblight

General care

Pruning

Pruning group 1.

Propagation methods

Budding, Grafting, Softwood cuttings


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Where to grow

Sorbus koehneana (Koehne mountain ash) will reach a height of 5m and a spread of 6m after 10-20 years.

Suggested uses

City, Cottage/Informal, Low Maintenance, Specimen tree, Wildlife

Cultivation

Grow in humus-rich, moderately fertile, neutral to acid soil. Drought and pollution tolerant. Tolerates partial shade but fruiting is best if sited in full sun.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

Companion plants

Botanical name

Sorbus koehneana

Other names

Koehne mountain ash

Genus

Sorbus Sorbus

Species

S. koehneana - S. koehneana is a spreading, deciduous shrub or small tree with pinnate leaves divided into numerous, oblong to ovate, sharply toothed, dark green leaflets turning orange-red to reddish-purple in autumn. Small corymbs of white flowers in late spring are followed by spherical, white fruit with red stalks.

Native to

China

Foliage

Deciduous

Habit

Compact, Spreading

Toxicity

Fruit may cause stomach upset.


Colour

Flower

White in Spring

Foliage

Dark-green in Spring; Dark-green in Summer; Reddish-purple, Orange-red in Autumn


How to care

Watch out for

Specific pests

Aphids , Blister mite , Sawflies

Specific diseases

Apple and pear canker , Fireblight

General care

Pruning

Pruning group 1.

Propagation methods

Budding, Grafting, Softwood cuttings


Monthly care advice


Where to grow

Sorbus koehneana (Koehne mountain ash) will reach a height of 5m and a spread of 6m after 10-20 years.

Suggested uses

City, Cottage/Informal, Low Maintenance, Specimen tree, Wildlife

Cultivation

Grow in humus-rich, moderately fertile, neutral to acid soil. Drought and pollution tolerant. Tolerates partial shade but fruiting is best if sited in full sun.

Soil type

Chalky, Loamy, Sandy

Soil drainage

Moist but well-drained, Well-drained

Soil pH

Acid, Neutral

Light

Partial Shade, Full Sun

Aspect

South, East, West

Exposure

Exposed, Sheltered

UK hardiness Note: We are working to update our ratings. Thanks for your patience.

Hardy (H4)

USDA zones

Zone 9, Zone 8, Zone 7, Zone 6, Zone 5, Zone 4

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This plant likes... Garden match
Soil types: Chalky, Loamy, Sandy Tell us...
Soil drainage: Moist but well-drained, Well-drained Tell us...
Soil pH: Acid, Neutral Tell us...
Light: Partial Shade, Full Sun Tell us...
Aspect: South, East, West Tell us...
Exposure: Exposed, Sheltered Tell us...
Hardiness: Hardy (H4) Tell us...

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