Agastache 'Purple Haze' (Hyssop) -- This decidedly hardy Agastache brings a new color palette with its long racemes of smoky blue violet flowers that never seem to stop coming. It remains compact in a container with an early pinch and is in flower from July to frost. It has survived wet and dry, and warm and cold winters in Pennsylvania where it has been in the ground since Spring 2000. Hardiness beyond zone 6 is unknown.
HOT and DRY. Drought tolerant Ice Plant (Delosperma) is right at home along this cement curbside. Few sun perennials can take such less-than-forgiving locations yet still provide months of bloom all summer long.