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Products > Acacia cultriformis
Acacia cultriformis - Knifeleaf Wattle
Image of Acacia cultriformis
Habit and Cultural Information
Category: Shrub
Family: Mimosaceae (~Fabales)
Origin: Australia (Australasia)
Evergreen: Yes
Flower Color: Yellow
Bloomtime: Spring
Height: 10-16 feet
Width: 10-15 feet
Exposure: Full Sun
Seaside: Yes
Summer Dry: Yes
Deer Tolerant: Yes
Irrigation (H2O Info): Low Water Needs
Winter Hardiness: 20-25 F
Acacia cultriformis (Knifeleaf Acacia) - A multi-trunked small tree growing to 15 feet tall and as wide. The gray-green triangular leaves (phyllodes) are tightly held to drooping gray branches. Fragrant yellow rounded flowers form in clusters in spring. Plant in full sun to light shade and irrigate occasionally to infrequently. Not fussy about soil type, but it requires good drainage. Reliably cold hardy to 20F and not damaged in our historic December 1990 freeze with short term temperatures of 18F. This is a great drought and frost tolerant plant for the garden that can be used as a focal or screening shrub or trained up as a small tree and cut branches work great in flower arrangements. Knifeleaf Wattle grows naturally in in south-east Queensland and New South Wales, Australia and has naturalized in coastal areas of the central and north New South Wales. The name Acacia comes either from the Greek word 'akazo' meaning "to sharpen" or from the Egyptian word 'akakia', a name given to the Egyptian Thorn, Acacia arabica. The specific epithet is from the Latin words 'culter' meaning "a knife" and suffix 'formis' meaning "in the form of" in reference to the knife-like shape of the phyllodes. This species was introduced into cultivation in California by William Walker at his Golden Gate Nursery in San Francisco in 1859 and we have grown this beautiful plant since 1981.  The information on this page is based on research conducted about this plant in our library and from reliable online sources. We also take into consideration observations of this plant in our nursery crops, as well as of plants growing in the nursery's garden and those in other gardens we visit. We also will incorporate comments that we receive from others and welcome getting feedback from anyone who may have additional information, particularly if it includes cultural information that would aid others in growing Acacia cultriformis.