American lyme grass is highly drought-tolerant once established. Water deeply but infrequently, allowing the soil to dry out between waterings. Overwatering can lead to root rot, especially in poorly drained soils.

Monitor soil moisture, particularly during prolonged dry spells or in extremely hot weather.

Pruning is typically minimal for American lyme grass. In late winter or early spring, before new growth emerges, remove any dead, damaged, or unsightly foliage.

This tidies up the plant and encourages fresh, healthy growth. Old flowering stalks can be left for winter interest if desired.

Propagation is usually achieved through division of established clumps in early spring or autumn. 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-drained soil and water thoroughly.

Repotting is generally not required for American lyme grass as it is a perennial grass often grown directly in the ground. If grown in containers, repot only when the plant becomes significantly root-bound, typically every 2-3 years, in early spring before active growth begins.