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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 large shrub that can reach to 20' to 30' tall by an equal width but usually seen on the small end of this range. It has nicely patterned bark with long wide longitudinal fissures a darker gray against white and very narrow, drooping slightly resinous bright green 1-2 inch long leaves (phylodes) on its 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 phyllode 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 (as 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 very popular dwarf form Acacia cognota Cousin Itt.
The information about Acacia cognata displayed on this page is based on research conducted in our nursery library and from online sources we consider reliable. We will also relate those observations made of this plant as it grows in our nursery gardens and in other gardens that we have visited, as well how the crops have performed in containers in our nursery field. We will also incorporate comments we receive from others and welcome hearing from anyone who has additional information, particularly when they share cultural information that would aid others in growing it.
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