• 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

Abeliophyllum distichum Roseum Group

white forsythia 'Roseum'

white forsythia 'Roseum'


  • Other common names white forsythia 'Roseum'

  • Family Oleaceae

  • Genus Abeliophyllum are lax, deciduous shrubs with paired ovate leaves and axillary racemes of fragrant flowers with 4 oblong lobes, borne on the bare stems in late winter or early spring

  • Details Roseum Group is a deciduous shrub of open growth, with small oval leaves and 4-petalled pale pink flowers borne in racemes in the leaf axils in late winter and early spring


  • 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)




  • Full Sun

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

  • Exposure Sheltered


  • Sand


  • Chalk


  • Loam


  • MoistureWell-drained

  • SoilSand, Chalk, Loam

  • pHAcid, Alkaline, Neutral


  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow in fertile, well-drained soil in full sun. Ideal for wall-training on a warm wall; early flowers may be damaged by late frosts

Propagation Root softwood or semi-ripe cuttings in spring and early summer, or propagate by layering in early spring

Suggested planting locations and garden types Wall-side Borders City & Courtyard Gardens

How to care

Pruning Pruning group 5 or pruning group 13 if wall-trained

Pests Generally trouble free

Diseases Generally trouble free

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