Water bush allamanda regularly during the growing season, keeping the soil consistently moist but not waterlogged. Reduce watering in winter, allowing the top few centimeters of soil to dry out between waterings.

Ensure good drainage to prevent root rot.

Prune bush allamanda in late winter or early spring before new growth begins. Remove any dead, damaged, or overgrown stems to maintain shape and encourage bushier growth.

Hard pruning can be done to rejuvenate older plants and promote flowering.

Propagate bush allamanda from semi-hardwood cuttings taken in late spring or summer. Dip the cut end in rooting hormone and plant in a well-draining potting mix.

Keep the cuttings moist and in a warm, humid environment until roots form.

Repot bush allamanda every 2-3 years, or when it becomes root-bound. Use a well-draining potting mix. Repot in spring, preferably after pruning, to give the plant space to establish. Water thoroughly after repotting.