Ludwigia grandiflora thrives in consistently moist to waterlogged conditions. Water frequently to keep the soil saturated, especially during warmer months.

Avoid letting the soil dry out completely, as this can stress the plant. In its natural habitat, it often grows in shallow water or very wet soil.

Pruning is primarily for managing size and shape, and for encouraging bushier growth. Trim back leggy stems in spring to promote new shoots. Dead or damaged stems should be removed at any time.

Pinching the tips of young plants can help create a more compact form.

Propagation is easily achieved through stem cuttings. Take cuttings of about 10-15 cm length from healthy stems in spring or summer. Remove the lower leaves and place the cuttings in water or moist potting mix.

Roots will develop quickly, and new plants can be potted up.

Repotting is typically needed every 1-2 years, or when the plant becomes root-bound. Use a well-draining potting mix, ideally with some added compost.

If grown in a pond, you can repot into aquatic plant baskets filled with heavy loam or aquatic soil.