Acacia decurrens: is known as a Black Wattle. Acacia decurrens is a tall shrub or small tree with bipinnate foliage. The common name is rather confusing because there are many tall Wattles with bipinnate foliage that have been given this name. There are at least 20 species with this common name native to New South Wales alone.
The botanical differences between species include the position of glands on the leaf stems and the number of leaflets on each branch. Some Black Wattles flower outside of the usual spring period. Horticulturally most Black Wattles (including Acacia decurrens) are similar and may be cultivated as components of windbreaks and shelterbelts.
The ridge that runs along each branch may be used to identify Acacia decurrens. The dark green foliage contrasts with the bright yellow spring flowers.
Acacia decurrens bark was used in the tanning industry. Plantations were established along the Australian east coast to service the tanning industry. Plantations were also established in South Africa. The Australian industry collapsed due to cheaper labour costs in South Africa.
Acacia decurrens is native to the Coast and Tablelands of New South Wales. The species has become naturalized in Queensland, Victoria and Tasmania. This is a legacy of the defunct tanning industry.
Acacia decurrens is also cultivated overseas as a shelter plant and for firewood. The species is also grown as a glasshouse plant in Europe.
Propagate from seed.