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AGM plants have been through a rigorous trial and assessment programme. They are:
This plant will provide nectar and pollen for bees and the many other types of pollinating insects.
It is included in an evolving list of plants carefully researched and chosen by RHS experts. Divided into 3 groups these lists, linked below, are maintained by a team of RHS staff and are reviewed annually.
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Other common names Japanese quince 'Knap Hill Scarlet'
Family Rosaceae
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
Details '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
Foliage Deciduous
Habit Bushy
Fragrance Fruit
Hardiness
All ratings refer to the UK growing conditions unless otherwise stated. Minimum temperature ranges (in degrees C) are shown in brackets
H6
Full Sun
Partial Shade
Aspect South-facing or North-facing or West-facing or East-facing
Exposure Exposed or Sheltered
Chalk
Clay
Loam
Sand
MoistureMoist but well-drained, Well-drained
SoilChalk, Clay, Loam, Sand
pHAcid, Alkaline, Neutral
Ultimate height 1-1.5 metres
Ultimate spread 1.5-2.5 metres
Time to ultimate height 10-20 years
Cultivation Grow in well-drained soil in sun or partial shade
Propagation Propagate by semi-hardwood cuttings
Suggested planting locations and garden types Wall-side Borders Low Maintenance Cottage & Informal Garden
Pruning Pruning group 2
Pests Can get brown scale and aphids
Diseases Fireblight may be a problem
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