• AGM plants

    AGM plants have been through a rigorous trial and assessment programme. They are:

    • Excellent for ordinary use in appropriate conditions
    • Available to buy
    • Of good constitution
    • Essentially stable in form & colour
    • Reasonably resistant to pests & diseases

Sorbus aucuparia 'Sheerwater Seedling'

rowan 'Sheerwater Seedling'

AGM plants

AGM plants have been through a rigorous trial and assessment programme. They are:

  • Excellent for ordinary use in appropriate conditions
  • Available to buy
  • Of good constitution
  • Essentially stable in form & colour
  • Reasonably resistant to pests & diseases
  • Other common names rowan 'Sheerwater Seedling'

  • Synonyms Sorbus aucuparia 'Sheerwater'

  • Family Rosaceae

  • 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

  • Details 'Sheerwater Seedling' is a medium-sized cultivar with an upright habit; the branches ascending to form an oval shaped crown. It provides autumn colour as the pinnate leaves turn fiery colours and from the large trusses of orangey-red berries

Characteristics

  • Foliage Deciduous

  • Habit Columnar/Upright

  • Toxicity Raw fruit can cause mild stomach upset if ingested

  • Hardiness

    Hardiness ratings

    All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets

    • H1a - Under glass all year (>15C)
    • H1b - Can be grown outside in the summer (10 - 15)
    • H1c - Can be grown outside in the summer (5 - 10)
    • H2 - Tolerant of low temperatures, but not surviving being frozen (1 to 5)
    • H3 - Hardy in coastal and relatively mild parts of the UK (-5 to 1)
    • H4 - Hardy through most of the UK (-10 to -5)
    • H5 - Hardy in most places throughout the UK even in severe winters (-15 to -10)
    • H6 - Hardy in all of UK and northern Europe (-20 to -15)
    • H7 - Hardy in the severest European continental climates (< -20)

    H6

Colour

Sunlight

  • Full Sun

  • Partial Shade

  • Aspect South-facing or North-facing or West-facing or East-facing

  • Exposure Exposed or Sheltered

Soil

  • Loam

    Loam

  • Sand

    Sand

  • Chalk

    Chalk

  • MoistureWell-drained

  • SoilLoam, Sand, Chalk

  • pHAcid, Neutral, Alkaline

Size

  • Ultimate height 8-12 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grows in moderately fertile soil and a wide range of acid or alkaline soils. Tolerant of atmospheric pollution. An ideal specimen tree in a small town, wild or woodland garden

Propagation Propagate by softwood cuttings or grafting

Suggested planting locations and garden types Low Maintenance Hedging & Screens Wildlife Gardens City & Courtyard Gardens Coastal

How to care

Pruning Requires little attention. Pruning group 1

Pests Generally trouble-free but may be attacked by aphids, blister mites and sawflies

Diseases May be affected by a canker, silver leaf and fireblight

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