Salvia clevelandii (blue sage)

A tall well-branched shrub with narrow greyish green foliage. Native to southern California. The leaves are strongly aromatic. The whorls of bluish flowers are very showy in midsummer. Needs a well drained soil. 
 

evergreen shrub
height  x  width  3-4 x 3'
USDA Zones 8-10