Crotalaria capensis can be lovely used as a decorative hedge, an informal shrub border or as a screen. It makes a good flowering specimen tree ideal for the small garden, or use it mixed in an informal bed to make a lovely display. It is also recommended for a new garden as it is so fast-growing and wind resistant.

It prefers full sun, and will tolerate most soils as long as they are well drained and enriched with compost. Crotalaria likes a reasonable, regular amount of water so will do best in areas that have moderate to good rainfall as it has poor drought tolerance.

Sensitive to frost, so it will need protection when grown in gardens where severe frost may occur.

It is best grown from seed sown in autumn or spring, in well-drained soil. Seeds germinate easily. Soaking seed in hand-hot water and treating with a fungicide that combats pre-and post-emergence damping off, although not essential for germination, will increase the number of successful seedlings. Seed germinates in approximately two weeks. Prick out soon after the first pair of true leaves have developed. Protect young plants from frost. The growth rate is fast, up to 1 m per year. The plants will flower in the second year.

Seed can also be sown in situ especially when used for rehabilitation projects.

Propagation from cuttings taken from young growth may also be successful.