This fragrant late summer bloomer sends up aromatic, whorled, blue-flowering spikes over striking bright chartruese foliage. A wonderful contrast plant that is adaptable to difficult sites and beautiful even when not in bloom. Root hardy to USDA zone 5 will die back to the ground in cold weather. An important late season pollinator nectar plant.
‘Worcester Gold’ is a cultivar with striking, bright golden-yellow foliage.
‘Blue Myth’ is a slightly more compact cultivar topping out at about 24-30″ with dark blue flowers. ‘Dark Knight’ offers a reliable 24″ height and spread.