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Sorbus 'Joseph Rock'

mountain ash 'Joseph Rock'

'Joseph Rock' is an upright tree with pinnate leaves which turn orange, red and purple in autumn, contrasting with the butter-yellow berries

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Size
Ultimate height
8–12 metres
Time to ultimate height
20–50 years
Ultimate spread
4–8 metres
Growing conditions
Clay
Loam
Sand
Moisture
Moist but well–drained, Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring White Green
Summer Green
Autumn Orange Purple Red Yellow
Winter
Position
  • Full sun
  • Partial shade
Aspect

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

Exposure
Exposed or Sheltered
Hardiness
H6
Botanical details
Family
Rosaceae
Native to the UK
No
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

Accepted

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How to grow

Cultivation

Grow in moderately fertile, humus-rich soil. Tolerant of atmospheric pollution; ideal specimen tree in small garden

Propagation

Propagate by softwood cuttings in early summer, chip budding in summer or grafting in winter

Suggested planting locations and garden types
  • Low Maintenance
Pruning

Pruning group 1

Pests

May be attacked by aphids, blister mites and sawflies

Diseases

May be affected by apple canker, honey fungus and fireblight

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