Water deeply when the top 5-10 cm of soil is dry. Allow the soil to dry out somewhat between waterings. Reduce watering significantly during the dormant season to prevent root rot.

Ensure good drainage to avoid waterlogged conditions, which Bombax costatum dislikes.

Prune to maintain desired shape and size, and to remove any dead, damaged, or crossing branches. The best time for pruning is after flowering or in early spring before new growth begins.

This helps to encourage a bushier habit and can also stimulate more abundant flowering in subsequent years.

Propagate from seeds sown in spring or early summer, or from stem cuttings taken during the growing season. Seeds should be sown in a well-draining, sandy mix and kept moist.

Cuttings require a rooting hormone and a warm, humid environment to establish roots successfully.

Repot young plants every 1-2 years in spring. Mature trees may only need repotting every 3-5 years or when root-bound. Use a well-draining potting mix.

Choose a pot that is only slightly larger than the current one to avoid over-potting, which can lead to soil staying too wet.