Nassella charruana prefers well-draining soil and is drought-tolerant once established. Water moderately during active growth periods in spring and summer, allowing the soil to dry out between waterings.

Reduce watering significantly in fall and winter to prevent root rot, especially in cooler climates.

Prune Nassella charruana in late winter or early spring before new growth emerges. Cut back the dried foliage to about 5-10 cm above the ground.

This tidies the plant, removes dead material, and encourages vigorous new growth. Deadheading spent flower stalks can prevent unwanted self-seeding.

Nassella charruana is primarily propagated by seed. Sow seeds in early spring either directly into the garden or in pots. Germination can be erratic and may benefit from a period of cold stratification.

Division of established clumps is also possible in spring.

Repotting is generally not necessary for established plants in the ground. For container-grown Nassella charruana, repot every 2-3 years in early spring.

Choose a pot that is only slightly larger than the current one and ensure it has excellent drainage. Use a well-draining potting mix.