Water Sweet Vernalgrass regularly during its active growing season, especially in drier conditions. Allow the soil surface to dry slightly between waterings.

Reduce watering in late autumn and winter as the plant enters dormancy. Ensure good drainage to prevent root rot.

Pruning is not typically a major requirement for Sweet Vernalgrass.

If the plant becomes untidy or starts to spread excessively, it can be mowed or trimmed back in late spring after flowering to maintain shape and encourage denser growth. Remove any dead or damaged foliage as needed.

Sweet Vernalgrass is easily propagated by seed sown in autumn or early spring. Division of established clumps can also be undertaken in early spring.

This grass readily self-seeds, so manage its spread if you prefer to keep it contained to a specific area.

Repotting is generally not applicable to Sweet Vernalgrass as it is an herbaceous perennial grass typically grown in the ground or in containers where it can spread. If grown in a pot and it becomes root-bound, divide the clump and repot sections into fresh soil in spring.