Woodland sage

Salvia nemorosa (woodland sage, Balkan clary) 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. (Wikipedia)