Water regularly, especially during dry spells, allowing the soil to dry out slightly between waterings. Avoid waterlogging, as this can lead to root rot.

In drier climates, more frequent watering may be necessary to maintain consistent moisture.

Deadhead spent flower spikes to encourage reblooming and maintain a tidy appearance. Cut back the plant by about half in late spring or early summer after the first flush of flowers.

A harder prune in late autumn or early spring can also be beneficial.

Salvia × sylvestris can be propagated from seed sown in spring or from semi-ripe cuttings taken in summer. Seeds may require stratification.

Cuttings typically root well in a moist, well-draining medium in a warm environment.

This plant generally prefers to be slightly root-bound and does not require frequent repotting. If grown in a container, repot every 2-3 years in spring into a slightly larger pot with fresh, well-draining potting mix.