• 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 canadensis 'Glenn Form'

serviceberry 'Glenn Form'

serviceberry 'Glenn Form'

© RHS

  • Other common names serviceberry 'Glenn Form'

  • Synonyms Amelanchier canadensis Rainbow Pillar
    Amelanchier canadensis 'Glenn's Upright'

  • 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 'Glenn Form' is an upright, suckering shrub, up to 5m high, with oblong mid-green leaves which become multi-coloured green, yellow, orange and red in autumn. Upright sprays of small, white, star-shaped flowers in late spring are followed in summer by blue-black berries which are edible but rather tasteless; they are however eaten by birds

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)

    H7

Colour

Sunlight

  • Full Sun

  • Partial Shade

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

  • Exposure Sheltered or Exposed

Soil

  • Loam

    Loam

  • Sand

    Sand

  • Clay

    Clay

  • MoistureMoist but well-drained

  • SoilLoam, Sand, Clay

  • pHAcid, Neutral

Size

  • Ultimate height 4-8 metres

  • Ultimate spread 4-8 metres

  • Time to ultimate height 10-20 years

How to grow

Cultivation Grow in moist, well-drained, lime-free soil; will grow in sun or partial shade but autumn colour will be brightest in full sun

Propagation Propagate by layering, or by removing suckers in winter

Suggested planting locations and garden types Hedging & Screens Flower borders and beds Banks and Slopes Low Maintenance Cottage & Informal Garden City & Courtyard Gardens Wildlife Gardens

How to care

Pruning Pruning group 1

Pests Generally pest free

Diseases Generally disease free but may be affected by fireblight

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