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Sorbus lancastriensis
  • RHS Plants for pollinators

Lancastrian mountain ash

S. lancastriensis is a deciduous shrub or small tree to about 6m, endemic to the UKand only found in a small area around Morecambe Bay. The oval leaves are felted white beneath, shiny, mid-green above, with clearly marked veins. Creamy white blossom in spring is followed by bright orange-red berries

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Size
Ultimate height
4–8 metres
Time to ultimate height
20–50 years
Ultimate spread
2.5–4 metres
Growing conditions
Chalk
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Alkaline, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring White Green White
Summer Green White
Autumn Green White Red
Winter
Position
  • Full sun
  • Partial shade
Aspect

East–facing or South–facing or North–facing or West–facing

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Rosaceae
Native to the UK
Yes
Foliage
Deciduous
Habit
Bushy
Genus

Sorbus can be deciduous trees or shrubs with simple or pinnate leaves and clusters of small white or pink flowers, followed by white, yellow, pink, red or brown berries; some have fine autumn colour

Name status

Correct

Plant range
England

How to grow

Cultivation

Grows best in moderately fertile, humus-rich soil but tolerates poor, thin soil

Propagation

Propagate by softwood cuttings in early summer, chip budding in summer or grafting in winter. Propagate by seed sown outdoors in autumn

Suggested planting locations and garden types
  • Coastal
  • Cottage and informal garden
  • Wildlife gardens
  • Low Maintenance
  • Banks and slopes
  • Flower borders and beds
Pruning

Pruning group 1

Pests

May be attacked by aphids and blister mites

Diseases

May be affected by apple canker and fireblight

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