• 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

Sorbaria sorbifolia 'Sem' (PBR)

sorbaria 'Sem'

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
  • Other common names sorbaria 'Sem'

  • Family Rosaceae

  • Genus Sorbaria are large, deciduous suckering shrubs with attractive pinnate leaves and small, white, spiraea-like flowers borne in large terminal panicles in summer

  • Details 'Sem' is a small, compact selection, to 1.5m, of this thicket-forming shrub. It has many upright stems and a distinctive leaf colouring; yellow-green flushed with bright reddish-pink and bronze in spring. Leaves become greener in summer, but redden in autumn; colouring is best in good light. Flowers are borne in stiff, erect, rather narrow panicles of small white flowers in summer

Characteristics

  • Foliage Deciduous

  • Habit Suckering

  • 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

  • Full Sun

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Sand

    Sand

  • Clay

    Clay

  • Chalk

    Chalk

  • Loam

    Loam

  • MoistureMoist but well-drained, Well-drained

  • SoilSand, Clay, Chalk, Loam

  • pHNeutral, Alkaline

Size

  • Ultimate height 1-1.5 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 2-5 years

How to grow

Cultivation Best grown in moderately fertile, moist but well-drained soil. Useful for waterside plantings but neglected plants can rapidly form thickets

Propagation Propagate by semi-hardwood cuttings in mid-summer or propagate by seed sown in containers in a coldframe in autumn. Rooted suckers can be transplanted in winter or autumn

Suggested planting locations and garden types Flower borders and beds Low Maintenance City & Courtyard Gardens Coastal Cottage & Informal Garden

How to care

Pruning Pruning group 2 or pruning group 6; sucker removal in winter

Pests Generally pest free

Diseases Generally disease free

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