Plant Salvia nemorosa 'White Profusion' where you want a tidy, long-blooming perennial with strong garden performance. This woodland sage forms compact clumps of textured, aromatic foliage topped by upright bloom spikes that refresh a border from late spring into summer and often beyond with deadheading.
Give it full sun for the best flowering, though it can handle light, filtered conditions. Expect a mature size of about 12-24 inches tall and 12-24 inches wide, making it easy to tuck into mixed beds, cottage-style plantings, or massed drifts along a walkway.
Water regularly during establishment, then let the soil dry slightly between waterings. Choose well-drained soil and avoid consistently soggy spots. After the first flush of bloom, shear or clip spent flower stems to encourage repeat flowering and keep the plant looking fresh.
In cold-winter regions, leave a bit of top growth for winter interest and cut back in early spring as new growth appears. Pair it with other sun-loving perennials and ornamental grasses for a clean, layered look that draws butterflies through the season.