Diplazium bantamense prefers consistently moist soil, mimicking its native humid environments. Water thoroughly when the top centimeter of soil begins to feel dry. Avoid waterlogging the roots, which can lead to rot.

In drier conditions, misting the foliage can also help maintain adequate humidity around the plant.

Pruning for Diplazium bantamense is minimal. Remove any dead, damaged, or yellowing fronds at the base of the plant using clean, sharp scissors or a knife.

This helps maintain the plant's appearance and directs energy towards healthy new growth. Avoid cutting back healthy fronds.

Diplazium bantamense can be propagated through division of established plants or by spores. For division, carefully separate younger plants from the parent during repotting in spring.

Spore propagation is more complex and requires specific conditions, often best left to experienced horticulturists.

Repot Diplazium bantamense every 2-3 years, or when it becomes root-bound and growth appears stunted. Use a well-draining potting mix, such as a blend for ferns.

Choose a pot that is only slightly larger than the current one to avoid over-potting, which can lead to root issues.