Maintain consistently moist soil for Hygrophila angustifolia. In aquatic settings, ensure the substrate remains saturated. Avoid letting the soil dry out completely, as this can stress the plant and lead to leaf drop.

Reduce watering slightly during cooler periods but do not allow it to become parched.

Prune Hygrophila angustifolia regularly to encourage bushier growth and prevent legginess. Trim back stems just above a leaf node. This not only maintains a desirable shape but also stimulates new shoot development.

Remove any yellowing or dead foliage promptly to improve plant health.

This species is easily propagated from stem cuttings. Take cuttings of 5-10 cm length and remove the lower leaves. Plant them directly into moist substrate or float them in water.

Roots will develop quickly, after which they can be transplanted into their permanent location.

Repot Hygrophila angustifolia when it becomes root-bound, typically every 1-2 years. Use a well-draining potting mix, such as a blend of peat moss and perlite.

Ensure the new pot is only slightly larger than the current one to avoid waterlogging and promote healthy root development.