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Acacia cultriformis (Knifeleaf Acacia) - A multi-trunked evergreen (evergray) 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 decently good drainage. Reliably cold hardy to 20°F and not damaged in our historic December 1990 freeze with short term temperatures of 18°F. 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 displayed on this page about Acacia cultriformis is based on the research we have conducted about it in our nursery library as well as from information provided by reliable online resources. We also include our own observations made about this plant as it grows in the nursery gardens and other gardens visited, as well how the crops of this plant have performed in the containers in our nursery field. We will also incorporate comments that we have received from others and welcome hearing from anyone with information about this plant, particularly if it includes cultural information that will aid others to better grow it.
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