Upright deciduous subshrub to about 4 feet high and 3 feet wide. Hardy to about -10 degrees F. Full sun. Deeply cut silver gray-green leaves. Small tubular, violet blue flowers in late summer. Tolerates well drained poor to moderately fertile...
Compact, upright perennial. Finely-dissected, aromatic, gray-green foliage on stiff, upright, square stems. Whorls of 2-lipped, tubular, violet-blue flowers tiered in branched, terminal panicles appear over a long summer bloom.