Picea glauca var. albertiana Alberta Blue ('Haal')

RHS Plant Profile
Alberta spruce [Alberta Blue]

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Synonyms

Picea glauca var. albertiana 'Haal'
Picea glauca var. albertiana 'Alberta Blue'

Conifers Trees
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A dense and bushy dwarf conifer, making a neat, conical tree to around 1m tall after 10 years. The needles are blue-grey

Position

Full sun

Soil Types

Clay, Loam, Sand

Max Height

1-1.5 metres

Max Spread

0.5-1 metres

Size

Time to Maturity
10–20 years
Max Spread
0.5-1 metres
Max Height
1-1.5 metres

Growing Conditions

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

Position

Full sun
Aspect
East–facing or South–facing or West–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
Pinaceae
Native to GB/Ireland
No
Foliage
Evergreen
Habit
Bushy
Genus
Picea are evergreen trees with rigid, needle-like leaves arranged singly all round the shoots, and narrow, leathery-scaled cones borne near the ends of the shoots
Name Status
Trade

How to Grow

Cultivation

Grow in any deep, moist but well-drained, ideally neutral to acid soil in full sun. See conifer cultivation for more advice

Propagation

Propagate by grafting or hardwood cuttings

Suggested planting locations and garden types

  • City and courtyard gardens
  • Architectural
  • Rock garden
  • Patio and container plants
  • Low Maintenance

Pruning

No pruning required

Pests

May be susceptible to adelgids, red spider mite and conifer aphid

Diseases

May be susceptible to honey fungus