Propagation
Seeds require scarification by nicking the seed coat and soaking in water for 24 hours prior to sowing.

Botanic information
Leaf: The trifoliate leaves have 2-3 leathery textured, semi succulent oval leaflets that are up to 80 mm (3⅛ in) long. The petiole is long and during mid-day in hot sun the leaves fold up to reduce the transpiration rate.

Flower: The papillionate (pea-shaped) flowers have 10-stamens with 9-united to form a tube and one solitary from the base. They are arranged in erect axillary raceme that appears during summer.

Fruit: The flattened a woody pods are strongly ribbed and may have a wing near one margin. It contains numerous buoyant hard coated seeds that are distributed by ocean currents.