Water regularly, keeping the soil consistently moist but not waterlogged. Allow the top inch of soil to dry out slightly between waterings, especially during warmer months.

Reduce watering frequency in winter when growth slows.

Pruning is generally not required for small sweet vernal grass, as it maintains a compact, grass-like form. If it becomes untidy or if seed heads are not desired, light trimming can be done after flowering to maintain shape.

Propagate small sweet vernal grass by division of established clumps in spring. Alternatively, it can be grown from seed sown in autumn or early spring. Seed germination may be improved by stratification.

Repotting is usually only necessary if the plant is grown in a container and becomes root-bound. This is best done in early spring before new growth begins.

Gently loosen the roots and repot into a slightly larger container with fresh potting mix.