Maintain consistently moist soil, mimicking its natural aquatic or semi-aquatic environment. For submerged plants, ensure the water level remains stable, preventing it from drying out.

For emergent growth, keep the substrate saturated. Avoid waterlogging around the crown if planted in soil.

Pruning is generally not required for Vallneria spiralis. Remove any dead or decaying leaves by gently pulling them from the base.

If the plant becomes too dense, you can thin it out by removing older plants or runners to encourage new growth and prevent overcrowding. Avoid cutting healthy leaves.

Vallisneria spiralis propagates readily via runners (stolons) that emerge from the base of the parent plant.

These runners will produce new plantlets which can be left to grow or carefully separated once they have developed a small root system. You can also propagate from seeds if available, though this is less common.

Repotting is rarely necessary as Vallneria spiralis prefers to be established. If the plant is growing in a container and has outgrown it, or if it's becoming too crowded in an aquarium substrate, you can transplant it.

Gently loosen the roots and replant in a larger container or a new location, ensuring the crown is at substrate level.