Acacia cultiformis     
Knife acacia   
Fabaceae Family     

Compiled by the Master Gardeners
of the University of Arizona Pima County Cooperative Extension.


Form: irregular shrub; with age a rounded small tree or mounded shrub
Seasonality: evergreen
Size: 6-12ft, spread 6-15ft; in Tucson, typically only to 8ft with equal spread
Leaves: unusual triangular shape, like knife blade or shark fin; no petiole (phyllodium); rough texture, off-green
Flowers: on terminal end of each branch, cluster of small golden yellow puffballs; bloom in early to mid spring
Knife acacia
young Acacia cultiformis specimen
Fruit: small slender pod; 1.5-2in long, 1/2 to 1/4in wide
Stems/Trunks: may form slender trunk with age
Range/Origin: arid regions of eastern Australia
Hardiness: to high teens



pointed leaves
unusual leaf form of Acacia cultiformis

prone to chlorisis in wet soils

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This page was first created August 24, 2001 and last modified July 4, 2004.

Web page design and photographs by Toni Moore, Master Gardener
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