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Acacia dealbata subsp. subalpina

subalpine blue wattle

An evergreen tree, to around 8m, with beautiful fern-like silver green leaves. The fluffy flowers in spring are bright yellow and fragrant..

Other common names
subalpine mimosa

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Size
Ultimate height
4–8 metres
Time to ultimate height
10–20 years
Ultimate spread
2.5–4 metres
Growing conditions
Clay
Loam
Sand
Moisture
Well–drained
pH
Acid, Neutral
Colour & scent
StemFlowerFoliageFruit
Spring Yellow Green Grey Silver
Summer Green Grey Silver
Autumn Green Grey Silver
Winter Green Grey Silver
Position
  • Full sun
Aspect

East–facing or North–facing or South–facing or West–facing

Exposure
Sheltered
Drought resistance
Yes
Hardiness
H4
Botanical details
Family
Fabaceae
Native to GB / Ireland
No
Foliage
Evergreen
Habit
Columnar upright, Spreading branched
Genus

Acacia can be deciduous or evergreen trees, shrubs or climbers, with alternate, pinnately divided leaves or simple modified leaf-like stalks (phyllodes), and tiny, sometimes fragrant, flowers in short spikes, or in racemes or spikes of spherical heads

Name status

Correct

How to grow

Cultivation

Grow outdoors in neutral to acid well-drained soil in sheltered location with full sun. Suits coastal, courtyard and urban gardens in milder locations, but may need winter protection elsewhere. It is smaller in every respect than Acacia dealbata, but hardier. Resents hard pruning. For more advice see tree cultivation

Propagation

Propagate by semi-hardwood cuttings or seed. For more advice see Propagate by seed

Suggested planting locations and garden types
  • Architectural
  • City and courtyard gardens
  • Mediterranean climate plants
Pruning

Pruning group 1

Pests

May be susceptible to glasshouse red spider mite, fluted scale and mealybugs

Diseases

May be susceptible to honey fungus

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