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Acacia cochlearis, commonly known as rigid wattle, is a species of flowering plant in the family Fabaceae and is endemic to the south-west of Western Australia. It is a bushy, erect, sharply pointed shrub with ribbed branchlets, sessile, linear to narrowly elliptic or oblong phyllodes, spherical heads of deep golden yellow flowers, and pendent, linear, leathery pods.
Acacia cochlearis can be grown from seed. The seeds should be soaked in hot water or lightly abraded with fine sandpaper prior to planting. They should be sown in free draining soil and can benefit from the addition of disease-free soil from existing plants to transfer the Rhizobium bacteria that are important in nitrogen fixation. Plants require a position in full sun.
Rigid wattle grows in sandy soils and is found in coastal areas on sandplains and sand dunes. It grows in coastal areas from Lancelin to Israelite Bay in the Avon Wheatbelt, Esperance Plains, Geraldton Sandplains, Hampton, Jarrah Forest, Mallee, Swan Coastal Plain, Warren and Yalgoo bioregions of south-western Western Australia, where it is found growing as solitary plants or in dense thickets.
The shrub is sold as a suitable medium size shrub for gardens in coastal regions or areas with sandy soils. It is also used to stabilise dune or coastal areas. A. cochlearis establishes quickly and reliably in stabilised soils. Although it is must be protected from high winds it is utilised in mixed plantings with other species such as Acacia rostellifera and Scaevola crassifolia. It is an indicator of good quality dunes as the
Acacia abbatiana · Acacia abbreviata · Acacia abrupta · Acacia acanthaster · Harrow Wattle · Acacia acellerata · Gold-dust acacia · Acacia aciphylla · Acacia acoma · Acacia acradenia · Strap Leaved Wattle · Acacia acuaria
Text excerpted from the Wikipedia article Acacia cochlearis by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
