Perovskia atriplicifolia (Russian Sage) is thriving this fall in the southern side path, its new home since early spring. In its former location this sun-loving perennial had been crowded out for years by a neighboring lantana.
Now planted in full sun the Russian Sage is 3.5 feet tall with airy, arching stems and silvery-gray foliage, somewhat aromatic. It is deer-resistant and drought tolerant. The lavender-blue flowers most likely are what earned this plant a spot in the garden in the first place.
pbmGarden 
Cool! appears that it would be neat in dried arrangements.
I love all the sages and salvias. Don’t need deer resistant – maybe kangaroo or goat – but anything here has to be both frost and drought proof, so sages, salvias, lavenders, that sort of thing all work well for me.