• 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

Cotoneaster horizontalis

wall spray

  • Other common names wall spray
    rock spray

    wall cotoneaster

    see more
  • Family Rosaceae

  • Genus Cotoneaster can be deciduous or evergreen shrubs or small trees, with simple, entire leaves and clusters of small white or pink flowers in spring and summer, followed by showy red, purple or black berries

  • Details C. horizontalis is a spreading dwarf deciduous shrub to 2m in width, with distinctive, flat, regularly branched sprays of foliage with small glossy leaves that turn orange and red in autumn. Pink-tinged flowers and red berries

  • Plant range W China


  • Foliage Deciduous

  • Habit Trailing

  • Toxicity Fruit may 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)




  • Full Sun

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

  • Exposure Exposed or Sheltered


  • Chalk


  • Chalk


  • Chalk


  • Chalk


  • MoistureWell-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAcid, Alkaline, Neutral


  • Ultimate height 0.5-1 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow in well-drained, dry situations in full sun

Propagation Propagate by seed or semi-hardwood cuttings

Suggested planting locations and garden types Drought Resistant Low Maintenance Ground Cover Banks and Slopes Hedging & Screens Cottage & Informal Garden

How to care

Pruning Pruning group 1

Pests Can get brown scale, Cotoneaster webber moths, aphids and woolly aphid

Diseases May suffer from fireblight

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