Brugmansia insignis thrives with consistent moisture. Water thoroughly when the top 2-3 cm of soil feels dry. Avoid waterlogged conditions, which can lead to root rot.

Reduce watering slightly during cooler months or when the plant is dormant, but never let the soil dry out completely.

Prune in late winter or early spring to shape the plant and encourage bushier growth. Remove any dead, damaged, or crossing branches. Pinching back young shoots can promote a more compact form.

Pruning also helps manage the plant's size, especially in containers.

Propagate Brugmansia insignis from stem cuttings taken in spring or summer. Select healthy, non-flowering shoots about 15-20 cm long.

Remove lower leaves and dip the cut end in rooting hormone before inserting into a well-draining potting mix. Keep moist and warm for best results.

Repot young plants annually in spring, and mature plants every 2-3 years or when root-bound. Use a larger container with good drainage.

A rich, well-draining potting mix, such as a blend of peat moss, compost, and perlite, is ideal. Water well after repotting.