Cobb County Water Lab Training Room, 662 South Cobb Drive, Marietta 30060. The Cherokee Garden contains plants the Cherokee used for medicine, food, tools weapons, shelter, arts and ceremonial purposes. Master Gardener Tony Harris will talk to us about the garden, as well as the Period Garden at Green Meadow Preserve, which is centered around a 19th century farmhouse on 112 acres of historic farmland in West Cobb County. Free. For information on other programs see www.cobbmastergardeners.com.