Acacia salicina, also known as Willowleaf Acacia, is part of the Acacia family native to Australia. The trees are hardy down to 22 degrees F, which means they don't do well in areas with very cold winters. In fact, most Acacia salicina grow in desert areas, such as Arizona and Nevada. Acacia salicina have long weeping branches and can grow to 25 feet tall with a 15-foot-wide spread. Pruning Acacia salicina regularly helps maintain the tree's exotic, weeping appearance.
Remove any dead, diseased or crossing branches at the trunk of the tree. Cut the branches off with a sharp set of shears that is large enough to fit over the entire branch.
Thin the branches in Acacia salicina's canopy to allow for a greater weeping effect and decease the trees resistance to the wind. Remove about ¼ of the branches. Remove each branch at a junction where it meets another branch.
Brush each cut with pruning sealant.