Wikipedia states: It is a hardy herbaceous perennial plant native to a wide area of central Europe and western Asia. It is an attractive plant that is easy to grow and propagate, with the result that it has been passed around by gardeners for many years. Its wide distribution, long history, and the ease with which it hybridizes have resulted in many cultivars and hybrids—along with problems in clearly identifying the hybrids and their relationship with S. nemorosa. It was named and described by Carl Linnaeus in 1762, with "nemorosa" ("of woods") referring to its typical habitat in groves and woods. In northern Britain, Salvia nemorosa and Salvia pratensis are both in danger of disappearing due depredation from slugs. Description: There are numerous cultivars widely grown in horticulture. Many of them are hardy to –18 °C., with flowers ranging in color from violet, to violet-blue, rosy pink, and even white. All are perennial, with numerous leafy stems growing from the base at the beginning of summer. The many inflorescences have closely spaced whorls of small flowers with brightly colored calyces. The plant prefers full sun, good drainage, and moderate weekly watering.

Erect, many-branched perennial with ovate or lace-shaped to oblong, notched, wrinkled, mid-greed leaves, to 4 in. long. From summer to autumn, bears violet to purple, or white to pink flowers, to 1/2in. long, in dense, terminal racemes. Spreading growth to 24in.