Japanese Silver Grass thrives in consistently moist soil, especially during its active growth period. Water deeply when the top 2-3 cm of soil feels dry.

Reduce watering in late autumn and winter, allowing the soil to dry out more between waterings. Avoid waterlogged conditions, which can lead to root rot.

Cut back all dead foliage to ground level in late winter or early spring before new growth emerges. This tidies the plant and encourages vigorous new shoots.

Avoid pruning in autumn, as the dried foliage provides winter interest and protection for the crown.

Propagate Miscanthus floridulus by division in early spring. Carefully dig up the plant and divide the rhizomatous root ball into sections, ensuring each piece has at least one bud.

Replant divisions immediately into well-prepared soil, watering thoroughly.

Repotting is rarely necessary for in-ground specimens of Miscanthus floridulus due to their vigorous growth.

If grown in a large container, repot in early spring every 2-3 years into a slightly larger container with fresh potting mix. Ensure good drainage.