Amelanchier alnifolia 'Obelisk'PBR

RHS Plant Profile
alder-leaved serviceberry 'Obelisk'

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alder-leaved serviceberry 'Obelisk' RHS
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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

Position

Full sun, Partial shade

Soil Types

Loam, Sand

Max Height

4-8 metres

Max Spread

1-1.5 metres

Size

Time to Maturity
5–10 years
Max Spread
1-1.5 metres
Max Height
4-8 metres

Growing Conditions

Loam Sand
Moisture
Moist but well–drained or Well–drained
pH
Acid or Neutral

Position

Full sun Partial shade
Aspect
South–facing or West–facing or North–facing or East–facing
Exposure
Exposed or Sheltered
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 & Scent

Season Stem Flower Foliage Fruit
Spring
Summer
Autumn
Winter

Botanical Details

Family
Rosaceae
Native to GB/Ireland
No
Foliage
Deciduous
Habit
Bushy
Potentially harmful
The berries are edible, but this tree is usually grown as an ornamental plant rather than to provide a crop of fruit in the UK
Genus
Amelanchier are small deciduous trees or shrubs with showy white flowers in early spring, red to purple fruits and often good autumn colour
Name Status
Accepted

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

  • Architectural
  • City and courtyard gardens
  • Cottage and informal garden
  • Wildlife gardens
  • Hedging and screens
  • Edible fruit

Pruning

Pruning group 1

Pests

Generally pest-free

Diseases

May be susceptible to fireblight and honey fungus