• 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

Amelanchier alnifolia 'Obelisk' (PBR)

alder-leaved serviceberry 'Obelisk'

alder-leaved serviceberry 'Obelisk'

© RHS

  • Other common names alder-leaved serviceberry 'Obelisk'

  • Family Rosaceae

  • Genus Amelanchier are small deciduous trees or shrubs with showy white flowers in early spring, red to purple fruits and often good autumn colour

  • Details 'Obelisk' is a small, very slender tree or large shrub with upswept branches and bronze young leaves, maturing to green then orange-yellow in autumn. Dense, terminal racemes of pure-white flowers, with green centres, are produced in abundance in mid-spring and followed by edible scarlet fruits, maturing to black

Characteristics

  • Foliage Deciduous

  • Habit Bushy

  • 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)

    H7

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Exposed or Sheltered

Soil

  • Loam

    Loam

  • Sand

    Sand

  • MoistureWell-drained, Moist but well-drained

  • SoilLoam, Sand

  • pHAcid, Neutral

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 1-1.5 metres

  • Time to ultimate height 5-10 years

How to grow

Cultivation Grow in moist, lime-free, well-drained soil in sun or part shade. The best autumn colour is achieved when grown in full sun. Fruits are enjoyed by birds

Propagation Propagate by softwood cuttings or semi-ripe cuttings in summer or layering

Suggested planting locations and garden types Hedging & Screens Architectural City & Courtyard Gardens Cottage & Informal Garden Wildlife Gardens

How to care

Pruning Pruning group 1

Pests Generally pest free

Diseases Susceptible to fireblight and leaf scorch in dry soil conditions or strong winds may be problematic

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