MacGregor's Wildrye prefers consistently moist soil during its active growth period, but avoid waterlogged conditions. Water deeply when the top 2-3 cm of soil feels dry.

Reduce watering in the dormant season, allowing the soil to dry out more between waterings to prevent root rot.

Pruning is primarily for aesthetic purposes and to manage seed dispersal. Cut back the spent flower stalks and foliage in late fall or early spring before new growth emerges.

This tidies the appearance and prevents unwanted self-seeding. Remove any dead or damaged leaves throughout the growing season.

MacGregor's Wildrye is best propagated by division of established clumps in early spring or fall. 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 generally not necessary for this perennial grass, as it is typically grown in the ground. If grown in containers, repotting may be required every 2-3 years to refresh the soil and provide more space.

Choose a slightly larger pot and fresh, well-draining potting mix in spring.