Pontederia africana thrives in consistently moist to waterlogged conditions. Keep the soil saturated, especially during the growing season. If grown in a pond, ensure the water level is maintained.

Avoid letting the soil dry out completely, as this can stress the plant.

Pruning is generally minimal for Pontederia africana. Remove any dead or yellowing leaves at the base of the plant as they appear. This helps maintain a tidy appearance and prevents disease.

Deadheading spent flower stalks can also be done.

Propagation is easily achieved through division of rhizomes or stolons, typically done in spring. Separate healthy sections with roots and at least one growth point and replant them in moist soil or directly into shallow water.

Repotting is usually only necessary if the plant outgrows its container or if the potting medium has degraded. This is best done in spring. If grown in a pond, it can often be left undisturbed for several years.