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Acacia cultriformis

knife-leaf wattle

A small evergreen tree to 4m, though occasionally trailing/prostrate. The 'leaves' are small silver-green triangles and the flowers bright yellow clusters of little pom-poms in spring

Other common names
knife acacia
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Size
Ultimate height
2.5–4 metres
Time to ultimate height
10–20 years
Ultimate spread
1.5–2.5 metres
Growing conditions
Loam
Sand
Chalk
Moisture
Well–drained
pH
Acid, Neutral, Alkaline
Colour & scent
StemFlowerFoliageFruit
Spring Yellow Green Grey Silver
Summer Green Grey Silver
Autumn Green Grey Silver
Winter Green Grey Silver
Position
  • Full sun
Aspect

South–facing or West–facing

Exposure
Sheltered
Hardiness
H3
Botanical details
Family
Fabaceae
Native to the UK
No
Foliage
Evergreen
Habit
Bushy, Spreading branched, Trailing
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

Plant range
New South Wales

How to grow

Cultivation

Grow in neutral or slightly acid/alkaline, well-drained soil in a sheltered site in full sun. Tolerant of salt. For more advice, see shrub cultivation

Propagation

Propagate by semi-ripe cuttings or seed. For more information see propagating from seed (tree/shrub

Suggested planting locations and garden types
  • City and courtyard gardens
  • Coastal
  • Mediterranean climate plants
  • Wall side borders
  • Banks and slopes
Pruning

Pruning group 8

Pests

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

Diseases

May be susceptible to honey fungus

Get involved

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