Podostemum rutifolium is an aquatic plant and requires continuous immersion in flowing freshwater. Maintain a stable water level and ensure good oxygenation.

Avoid stagnant water conditions, which can lead to root rot and fungal diseases. Regular water changes are not typically necessary if the aquatic environment is healthy.

Pruning is generally not necessary for Podostemum rutifolium. Its growth habit is naturally controlled by water flow and substrate.

If the plant becomes overgrown or starts to impede water circulation, carefully trim away excess material using sharp scissors. This should be done sparingly to avoid stressing the plant.

Propagation of Podostemum rutifolium is typically achieved through division or by collecting naturally occurring plantlets. Mature plants can be gently separated into smaller sections, each with healthy roots and shoots.

These divisions can then be anchored to a substrate in a suitable aquatic environment to establish.

Repotting is not applicable to Podostemum rutifolium as it is an aquatic plant that anchors itself to rocks or other hard substrates in its natural habitat. It is not grown in traditional pots with soil.

If needing to relocate or stabilize the plant, gently attach it to a suitable surface using fishing line or aquarium-safe glue.