Alphabetical Plant Listing

Acacia cultriformis (Knife Acacia)

Knife Acacia, Knife-Leaf Wattle, Dogtooth Wattle


Acacia cultriformis (Knife Acacia) is a small, multi-stemmed, evergreen tree of rounded to vase-shaped habit adorned with silvery-gray leaves shaped like paring knife blades. The foliage remains lovely all year round. In spring, masses of scented, fluffy, yellow flowers cover the branches and create a striking floral display. Relatively long-lived (50 years), Knife Acacia makes a dramatic focal point. It is useful as a barrier or screen and is also perfect for banks and slopes. Its cut branches are attractive in flower arrangements.

  • Grows up to 10-20 ft. tall (300-600 cm) and 10-15 ft. wide (300-450 cm). Adds 24-36 in. per year (60-90 cm).
  • Performs best in full sun or light shade in dry to moist, well-drained soils. Drought tolerant once established.
  • Susceptible to shot hole borer, root rot. Deer resistant.
  • Native to eastern Australia.

Not sure which Acacia to pick?
Compare All Acacia

Buy Acacia cultriformis (Knife Acacia)

Requirements

Hardiness 9 – 10
Climate Zones 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Trees
Plant Family Acacia
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 10' – 20' (3m – 6m)
Spread 10' – 15' (3m – 4.5m)
Water Needs Low, Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Fragrant, Showy, Evergreen
Native Plants Australia
Tolerance Deer, Drought
Attracts Birds
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles Coastal Garden, Mediterranean Garden

Buy Plants

Great Plant Combination Ideas with Acacia

Guides with Acacia


(c) Gerhard Bock, SucculentsandMore.com

While every effort has been made to describe these plants accurately, please keep in mind that height, bloom time, and color may differ in various climates. The description of these plants has been written based on numerous outside resources.


Requirements

Hardiness 9 – 10
Climate Zones 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24
Plant Type Trees
Plant Family Acacia
Exposure Full Sun, Partial Sun
Season of Interest Spring (Early,Mid,Late)
Summer (Early,Mid,Late)
Fall
Winter
Height 10' – 20' (3m – 6m)
Spread 10' – 15' (3m – 4.5m)
Water Needs Low, Average
Maintenance Low
Soil Type Clay, Loam, Sand
Soil pH Acid, Alkaline, Neutral
Soil Drainage Moist but Well-Drained, Well-Drained
Characteristics Fragrant, Showy, Evergreen
Native Plants Australia
Tolerance Deer, Drought
Attracts Birds
Garden Uses Beds and Borders, Hedges and Screens
Garden Styles Coastal Garden, Mediterranean Garden

Great Plant Combination Ideas with Acacia

Guides with Acacia

Plant Calculator

How many Acacia cultriformis (Knife Acacia) do I need for my garden?

%
ft
ft

Your Shopping List

Plant Quantity
Acacia cultriformis (Knife Acacia)

Find your Hardiness Zone

Find your Climate Zone

Find your Heat Zone

Join Gardenia.net

Create a membership account to save your garden designs and to view them on any device.

Becoming a contributing member of Gardenia is easy and can be done in just a few minutes. If you provide us with your name, email address and the payment of a modest $25 annual membership fee, you will become a full member, enabling you to design and save up to 25 of your garden design ideas.

Join now and start creating your dream garden!

Create a New Collection

Optional. For your reference.


Move Selected Plants to a Different Collection


Delete Collection

This field is required.