Swaziland's Alien Plants Database

Acacia longifolia (Andrews) Willd.

FABACEAE

Sydney golden wattle, long leaved wattle, langblaarwattel, sallow wattle, Port Jackson acacia

Invasive, Potential minor problem species

Origin: South East Australia and Tasmania

Growth Form: Tree/shrub

Plant Description: Plant: Unarmed, evergreen shrub or spreading tree 2–6(–10) m; stems usually have spherical outgrowths or galls (caused by an introduced wasp); the galls are green turning brown, replacing flower and leaf buds. NB Galls are smooth as opposed to knobbly in Acacia pycnantha. Leaves: Phyllodes, bright green, up to 180 mm long, with 2–5 prominent longitudinal veins. Flowers: Bright yellow, cylindrical flowerheads up to 50 mm long and 7 mm wide, in the axils of the leaves, July–September. Fruit: Pale brown pods, beaked apically, constricted between the seeds.

Key Features:

Control:

Comments: problem plant along riversides

More information:
Weeds & Invasive Plants Home Page

Photo - flowers/leaves