Hairy Mountain Mint, a perennial native to eastern North America,  bears clusters of white to lavender flowers in July and August that are inviting to all kinds of bees, wasps, flies, beetles, moths and butterflies. It can reach a height of 3 feet in full sun, though 1 to 2 feet is more likely in drier soils and part shade. Its strong mint aroma makes it unattractive to most mammals, though humans can enjoy using it in all the ways peppermint is typically employed.