It is a small tree that has been planted for fodder in tropical areas of Queensland. Unless heavily grazed or otherwise controlled, leucaena is able to rapidly spread to adjacent areas.
Leucaena is native to Central and South America. It is a shrub growing to 6 m high. Leaves are dull, greyish-green leaflets. Flower heads are creamy-yellow sphere shaped on stalks. Its seed pods are glossy brown, long and flattened in dense clusters.
See Using herbicides for more information.
Triclopyr 240 g/L + Picloram 120 g/L
Rate: 1.0 L in 60 L of diesel
Comments: Cut stump/basal bark application.
Withholding period: Nil
Herbicide group: I, Disruptors of plant cell growth (synthetic auxins)
Resistance risk: Moderate
Leucaena (Leucaena leucocephala) is not declared in NSW under the Noxious Weeds Act 1993.