Aloidendron tongaense is a small, fairly fast-growing, ornamental tree, with horticultural appeal. It is easily propagated by branch ends (branch cuttings) or seed. If grown in shady conditions, the leaves tend to be larger. Plants prefer a mineral-poor, slightly acidic, sandy soil.

Aloidendron tongaense adapts well in cultivation and does best in coastal or semi-coastal gardens or as a container plant (Van Jaarsveld 2010). It grows well in other parts of the world or similar climates where frost is absent or light. The plants are also popular in California, where it is grown as a feature plant. It also grows well in Mediterranean-type gardens in other parts of the world. Plants grow in full sun or light shade, and should reach flowering size within about eight years. To obtain pure seed, it is best to cross-pollinate from two individuals. This can be accomplished with a sharpened match stick and by transferring the pollen from a genetically different plant to the stigma of another of the same species, therefore ensuring that the species breeds true.

Aloidendron tongaense seed should be sown preferably during the warmer months, in a shady position. Cover with a thin layer of slightly acidic sand, and keep moist. Germination is usually within three weeks. Seedlings grow slow and are best planted out when large enough to handle.

Propagation from stem cuttings is best undertaken in spring. Allow the cutting to form a heel, by placing it on a dry window sill for a week. Cuttings are best rooted in containers in a well-drained medium, such as sand. Once rooted, they can be planted in individual containers and kept until well established.

Best to feed plants with an organic feeding (compost or any other liquid fertilizer). Aloidendron tongaense can be watered at any time of the year, however, watering should be reduced in winter.