Nassella tenuissima prefers to dry out slightly between waterings. Allow the top 2-3 cm of soil to become dry before watering again. Overwatering can lead to root rot.

Reduce watering significantly during the dormant winter months to prevent waterlogged conditions and fungal issues.

Prune Nassella tenuissima in late winter or early spring before new growth emerges. Cut back the old foliage to about 10-15 cm above the ground. This tidies the plant and encourages vigorous new growth.

Remove any dead or damaged leaves throughout the year.

Nassella tenuissima can be propagated by division of established clumps in early spring. Carefully dig up the plant and divide the root ball into smaller sections, ensuring each section has roots and shoots.

Replant divisions immediately into well-draining soil.

Repotting is rarely necessary for established outdoor plants. For container-grown Nassella tenuissima, repot every 2-3 years in spring if root-bound.

Choose a pot only slightly larger than the current one with fresh, well-draining potting mix. Ensure good drainage holes.