Provide consistent moisture during the growing season, allowing the top few centimeters of soil to dry out between waterings. Reduce watering significantly in winter, keeping the soil barely moist to prevent root rot.

Ensure good drainage to avoid waterlogged conditions, which this grass dislikes.

Prune back dead or dried foliage in late winter or early spring before new growth emerges. This helps to maintain a tidy appearance and allows new shoots to establish.

Remove any damaged or diseased stems as needed throughout the year to promote plant health and vigor.

Propagate Sorghastrum incompletum by dividing established clumps in early spring or autumn. Carefully separate sections with roots and replant them immediately.

Seed propagation is also possible, sowing seeds in autumn or early spring. Germination may be erratic and require stratification.

As Sorghastrum incompletum is a perennial grass typically grown in gardens, repotting is generally not applicable unless grown in a container.

If container-grown and root-bound, repot in spring into a larger container with well-draining soil. Ensure the new pot has adequate drainage holes.