• AGM plants

    AGM plants have been through a rigourous 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

Chaenomeles × superba 'Knap Hill Scarlet'

Japanese quince 'Knap Hill Scarlet'

Japanese quince 'Knap Hill Scarlet'

© � RHS 2003

  • Other common names Japanese quince 'Knap Hill Scarlet'

  • Genus Chaenomeles are deciduous, usually spiny shrubs with simple leaves and cup-shaped, 5-petalled flowers, solitary or clustered, in spring, followed by edible often fragrant green or yellow fruits

  • Family Rosaceae / Rosaceae

  • Species 'Knap Hill Scarlet' is a spreading small deciduous shrub, with glossy obovate leaves to 5cm in length. Flowers to 4cm in width, bright orange-scarlet. Fruits yellow, apple-shaped, fragrant when ripe

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Fruit

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Chalk

    Chalk

  • Chalk

    Clay

  • Chalk

    Sand

  • Chalk

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilChalk, Clay, Sand, Loam

  • pHAcid, Alkaline, Neutral

Size

  • Ultimate height

    1-1.5 metres

  • Ultimate spread

    1.5-2.5 metres

  • Time to ultimate height

    10-20 years

How to grow

Cultivation Grow in well-drained soil in sun or partial shade

Propagation Propagate by semi-hardwood cuttings

Suggested planting locations and garden types Low Maintenance Wall-side Borders Cottage & Informal Garden

How to care

Pruning Pruning group 2

Pests Can get brown scale and aphids

Diseases Fireblight may be a problem

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