Water Trichosanthes subvelutina regularly, keeping the soil consistently moist but not waterlogged, especially during the growing season.

Reduce watering in winter, allowing the top few centimeters of soil to dry out between waterings to prevent root rot. Ensure good drainage.

Prune Trichosanthes subvelutina to manage its vining growth and to remove any dead, damaged, or crossing stems. This can be done at any time of year, but major pruning is best performed in late winter or early spring before new growth begins to encourage a more vigorous and well-shaped plant.

Propagate Trichosanthes subvelutina from seeds sown in spring after the last frost, or by taking stem cuttings in late spring or early summer. Seeds may require stratification.

Cuttings should be rooted in a moist, well-draining medium in a warm environment.

Repot Trichosanthes subvelutina every 2-3 years, or when the plant becomes root-bound. Use a well-draining potting mix and a pot that is only slightly larger than the current one.

Repotting is best done in early spring before the onset of active growth.