Water regularly during the growing season, keeping the soil consistently moist but not waterlogged. Reduce watering in fall and winter. Ensure good drainage to prevent root rot, especially in containers.

Wilting foliage is a sign of thirst.

Cut back dead or dried foliage in late winter or early spring before new growth emerges. This tidies the plant and encourages vigorous new shoots. Remove any winter damage or unsightly stems as needed.

Propagate by division of established clumps in spring as new growth begins. Carefully separate sections with roots and replant them immediately. This is the most reliable method for Calamagrostis lahulensis.

Repot container-grown plants every 2-3 years in spring, or when the plant becomes root-bound. Use a well-draining potting mix. This ensures adequate space for root development and revitalizes the plant.