This long lived sub-shrub has an upright spreading habit with greyish-white shoots that form a dense habit. The aromatic lobed leaves are grey-green and the tube-shaped violet-blue flowers appear in late summer on a tall spike. 

Hardiness zones 6 to 9 

Perovskia atriplicifolia is naturally found in western Asia growing in rocky well-drained soils that are moderately fertile. It prefers an open sunny position and is salt, drought and frost tolerant.

Russian Sage is grown for its attractive foliage and its profuse flowers. It is planted in small to medium size gardens along borders or against a wall and for foliage contrast. It establishes in 1 to 2 years and tends to swamp surrounding plants. It is suitable for coastal or inland settings tolerating drier soils. ID 1604

Perovskia (pe-ROF-skee-ah) atriplicifolia (a-tri-pli-ki-FO-lee-ah)  

Lamiaceae (lay-mee-AY-see-ee) 
(Labiatae)
Mint Family