ACACIA

The genus Acacia consists of at least 1,200 species of which over 900 are Australlian; its other major centers are Africa and warmer parts of the Ameias. In Australia, they are invariably known as wattles. Most are shrubs or small to medium-sized tress, displaying a wide range of leaf shapes and sizes, some quite bizarre. Flowers are small and densely crowded into spikes; throughout winter or spring they form an abundant display of blossom, often a brilliant golden yellow. In African and some tropical Aerican species, sharp spines range along the branches. These may be extremely large and fierce-looking and, in a few species, the spines are much thicker than the branch-lets that bear them.

CULTIVATION

Most acacias are fast growers and are useful plants for restoring vegetation to denuded areas, as well as being suitable for ornamental or landscape use-through their quick growth habits is offset by a short life. They require well-drained soil and full sun. If disease sets in, replacing the plants may be the best solution. Propagation is mostly from seed.

Top Tip

Most acacias do not take kindly to excessive pruning, as this causes gum exudation and can also open the way for insect ad fungal attack.