The round, gray leaves of dittany of Crete are densely covered with a woolly white down. This sun-loving Mediterranean herb demands excellent drainage and resents having water on its leaves. We place the pots on the parapet in Bonnefont Cloister, where they get plenty of light and heat but are protected from rain by the overhanging roof. Although some sources list Origanum dictamnus as hardy to Zone 7, it can’t be successfully over-wintered in the cold, wet soil of our garden. Our pots are put in a cold frame in October and brought back out in May.