Water Calamagrostis scabrescens regularly, especially during its establishment phase and dry periods. Aim for consistently moist soil but avoid waterlogging, as this can lead to root rot.

Reduce watering frequency once the plant is mature and well-established, allowing the soil to dry slightly between waterings.

Prune Calamagrostis scabrescens in late winter or early spring before new growth begins. Cut back the previous year's dried foliage to about 10-15 cm from the ground.

This tidies the plant and encourages vigorous new shoot development. Remove any dead or damaged leaves throughout the growing season.

Propagate Calamagrostis scabrescens primarily through division. In early spring or fall, carefully dig up the plant and divide the root ball into smaller sections, ensuring each section has healthy roots and shoots.

Replant divisions immediately into prepared soil.

Repotting is generally not necessary for Calamagrostis scabrescens as it is a perennial grass that spreads via rhizomes and is typically planted in the ground. If grown in a container, repotting might be considered every 2-3 years in early spring if the plant becomes root-bound, moving it to a slightly larger pot with fresh soil.