• 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

Syringa vulgaris 'Mrs Edward Harding' (d)

lilac 'Mrs Edward Harding'

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
lilac 'Mrs Edward Harding'

© RHS

  • Other common names lilac 'Mrs Edward Harding'

  • Family Oleaceae

  • Genus Syringa can be deciduous shrubs or trees, with simple, entire or rarely pinnate leaves and conical panicles of small, very fragrant, 4-lobed tubular flowers in late spring or early summer

  • Details 'Mrs Edward Harding' is a bushy medium-sized deciduous shrub with dark green, heart-shaped leaves and dense panicles of fragrant, deep purplish-red, double flowers soon fading to deep pink

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)

    H6

Colour

Sunlight

  • Full Sun

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

  • Exposure Sheltered or Exposed

Soil

  • Sand

    Sand

  • Chalk

    Chalk

  • Loam

    Loam

  • Clay

    Clay

  • MoistureWell-drained, Moist but well-drained

  • SoilSand, Chalk, Loam, Clay

  • pHAlkaline, Neutral

Size

  • Ultimate height 2.5-4 metres

  • Ultimate spread 2.5-4 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Easy to grow in most well-drained, fertile, humus-rich alkaline to neutral soils. Thrives in chalky ground and appreciates mulching when planted in full sun

Propagation Propagate by softwood cuttings or layering in early summer. Grafting can be done in winter and chip budding in summer

Suggested planting locations and garden types Flower borders and beds Cut Flowers Hedging & Screens City & Courtyard Gardens Cottage & Informal Garden

How to care

Pruning Pruning group 1. Tolerates hard renovation pruning

Pests Susceptible to lilac leaf-mining moth, thrips and willow scale

Diseases Susceptible to lilac blight and honey fungus

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