When planting this Salvia, improve drainage by incorporating compost and adding horticultural grit or sand to heavier soils. Space plants 30-45cm (12-18in) apart and water thoroughly.
Deadhead spent flower spikes promptly to encourage continuous blooming. Apply a 5-7cm (2-3in) mulch of composted bark or gravel in early spring to retain moisture and suppress weeds, but avoid manure-based mulches, which can be too rich.
Feed with a high-potash fertiliser, such as tomato feed, once growth resumes in spring to promote flowering. Water regularly during dry spells but ensure the soil remains well-drained to prevent root rot.
In colder regions, it may die back, so provide winter protection by applying a dry mulch around the base or lifting and potting up plants to overwinter in a frost-free location.