Ammannia coccinea prefers consistently moist to wet soil, mimicking its native boggy habitats. Water frequently, especially during warmer months and active growth. Avoid letting the soil dry out completely.

In containers, ensure the pot is standing in a saucer of water to maintain high moisture levels.

Pruning is generally not required for Ammannia coccinea unless it becomes leggy or overgrown. If desired, you can trim stems to encourage bushier growth or to maintain a desired shape.

Pruning can also be done to propagate new plants from cuttings.

Propagation is easily achieved through stem cuttings. Take 6-10 cm cuttings from healthy stems and plant them in moist substrate, such as sand or a sand/peat mix.

Keep them in a humid environment with bright, indirect light. Rooting typically occurs within a few weeks.

Ammannia coccinea thrives in moist conditions, so repotting is mainly needed to provide more space or fresh substrate. If grown in a pot, repot into a slightly larger container when the plant becomes root-bound, usually every 1-2 years, during the spring growing season.