Acacia obtusata is a shrub, growing with a spindly habit up to 3 m tall and 2 m wide. It grows in NSW on the central and southern tablelands and western edges of coastal subdivisions, from Rylstone district to near Braidwood across to Tumut, common in the western Blue Mountains. Its habitat is chiefly dry sclerophyll woodland and forest.
The phyllodes (resemble leaves) have an oblanceolate or sometimes narrowly elliptic shape with reddish new tips, to 11 cm in length with a width of up to 1.5 cm. somewhat blue-grey in colour.
Flowers are produced in globular heads with up to 25 very small staminate flowers per head. Heads are arranged in racemes in the leaf axils.
The seed pods have a length of 10 cm by about 1 cm wide.
Grows best in well-drained soils in full sun. Is fast growing and makes an excellent informal windbreak or hedge in cultivation.
Acacias can suffer from a number of pests, including borers, scale, galls and leaf miners. Growing plants suitable to your local environment minimises these occurring.
Propagation is easy from scarified seed by covering with boiling water for 24 hours and discarding any seeds still floating on the surface.
Most wattles regenerate from seed after fire.
Acacia – from Greek akis, meaning a thorn or “thorny”.
obtusata – Latin – named in reference to the blunted (obtuse) tips of the phyllodes.
Not known to be at risk in the wild.