• 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

Corylopsis glabrescens

fragrant winter hazel

fragrant winter hazel

© RHS

  • Other common names fragrant winter hazel

  • Family Hamamelidaceae

  • Genus Corylopsis are deciduous shrubs or small trees, with simple, toothed leaves and nodding racemes of small, usually fragrant, bell-shaped pale yellow flowers in early spring

  • Details C. glabrescens is a spreading shrub to 5m, with broadly ovate leaves, greyish beneath, and pendulous racemes of small, fragrant, bell-shaped light yellow flowers in spring

  • Plant range Japan, Korea

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • Fragrance Flower

  • 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)

    H5

Colour

Sunlight

  • Partial Shade

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

  • Exposure Sheltered

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Loam

    Loam

  • MoistureWell-drained, Moist but well-drained

  • SoilSand, Clay, Loam

  • pHAcid

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Will grow in acidic soil in a shady position but may need some protection as late frosts can damage the flowers

Propagation Propagate by seed sown in containers in autumn in an open frame, softwood cuttings in summer or layering in autumn

Suggested planting locations and garden types Flower borders and beds Cottage & Informal Garden

How to care

Pruning Pruning group 1 immediately after flowering

Pests Generally pest free

Diseases Generally disease free

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