Water thoroughly when the top 2-5 cm of soil feels dry. Sporobolus tenuissimus prefers consistent moisture but can tolerate brief dry spells once established. Avoid waterlogged conditions, which can lead to root rot.

Prune back old foliage in late winter or early spring before new growth emerges to tidy the plant and encourage vigorous new shoots. Remove any dead or damaged leaves throughout the year.

Propagate by division of established clumps in spring. Carefully separate root sections with a sharp knife, ensuring each piece has roots and shoots. Replant immediately into well-draining soil.

Repot young plants annually or every two years in spring. Mature plants rarely need repotting but can be divided to refresh. Use a well-draining potting mix and a slightly larger container.