An excellent late flowering shrub with aromatic foliage and rich violet-blue flowers in summer. Deciduous, growing 3 – 4 foot tall and wide, with a dense mounding form. Dead heading old flowers often extends bloom period well into autumn. Requires good drainage and full sun with moderate water, though somewhat drought tolerant once established. An excellent source of nectar for late season native bees and honeybees. Treat like a shrubby perennial and prune hard once a year in late winter or early spring.