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| Category: Tree |
| Family: Mimosaceae (~Fabales) |
| Origin: Australia (Australasia) |
| Evergreen: Yes |
| Flower Color: Pale Yellow |
| Bloomtime: Spring |
| Synonyms: [Acacia subporosa var. linearis] |
| Height: 20-30 feet |
| Width: 20-30 feet |
| Exposure: Full Sun |
| Deer Tolerant: Yes |
| Irrigation (H2O Info): Low Water Needs |
| Winter Hardiness: 20-25° F |
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Acacia cognata (River Wattle) - A quick-growing, small graceful tree or shrub to 20' to 30' tall by equal width but usually seen on the small end of this range. It has very narrow, drooping slightly resinous bright green 1-2 inch long leaves (phylodes) and weeping branches. The leaves can be red-tinged in new growth or from frost but mature to a rich emerald green. Small pale yellow flowers appear in pairs in spring from ball-like buds that form at the base of each phylode at the branch tips. Plant in full sun to light shade in a well-draining soil with regular to occasional irrigation – has proven relatively drought tolerant but appreciates some summer irrigation. Protect from salt-laden air along the coast and give high overhead shade part day inland. Hardy to 20-25 degrees F. The type locality for this plant is Twofold Bay near Eden in New South Wales Australia. Its range is from along the coast from Victoria north to the Nowra district of New South Wales. It was first described as a variety of Acacia subporosa (variety linearis) and it is often still listed under this name as a cultivar of this species called "Emerald Cascade" - the specific epithet cognota references this close relationship between these two species as this is a Latin word meaning "related". 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. We have grown this tree at our nursery since 1982 and also grow the dwarf form Acacia cognota Cousin Itt.
The information on this page is based on our research that has been conducted on this plant in our nursery library, from online sources, and from observations made of the crops growing in the nursery, plants in the nursery's garden and those in other gardens where we have observed it. We also have incorporated comments received from others and welcome getting feedback from those who may have additional information, particularly if this information includes cultural information that would aid others in growing Acacia cognata. |
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