AppearanceIt is a tree that grows very quickly reaching 7–10 m in five to six years.
NamingCommon names for it include long-leaved wattle, acacia trinervis, aroma doble, golden wattle, coast wattle, sallow wattle and Sydney golden wattle.
There are two subspecies:
⤷ ''Acacia longifolia'' subsp. ''longifolia''
⤷ ''Acacia longifolia'' subsp. ''sophorae'' Court
StatusIt is not listed as being a threatened species, and is considered invasive in Portugal and South Africa. In the Southern region of Western Australia, it has become naturalised and has been classed as a weed by out-competing indigenous species.
Uses''Acacia longifolia'' is widely cultivated in subtropical regions of the world. Its uses include prevention of soil erosion, food , yellow dye , green dye and wood. The flower colour derives from the organic compound kaempferol. The tree's bark has limited use in tanning, primarily for sheepskin. It is useful for securing uninhabited sand in coastal areas, primarily where there are not too many hard frosts. In Tasmania the ripening pods were roasted and the seeds removed and eaten.
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