Water Trichosanthes costata regularly during its active growing season, ensuring the soil remains consistently moist but not waterlogged. Reduce watering significantly during its dormant period in cooler months, allowing the soil to dry out more between waterings to prevent root rot.

Prune Trichosanthes costata in late winter or early spring before new growth begins. Remove any dead, damaged, or crossing stems to maintain the plant's shape and encourage vigorous new growth.

This also helps to manage its vigorous climbing habit.

Propagate Trichosanthes costata from seeds sown in spring. Scarify the seeds or soak them in warm water for 24 hours to improve germination rates.

Alternatively, cuttings can be taken from healthy stems in late spring or early summer and rooted in moist potting mix.

Repot Trichosanthes costata every 2-3 years, or when it becomes root-bound. Use a well-draining potting mix, such as a blend of peat moss and perlite.

Choose a pot that is one size larger than the current one to accommodate its root system.