Even in the dog days of summer, there is always plenty of activity in the garden. A new session of the Walker County Master Gardeners course will begin Aug. 30 at the Walker County Extension Office. Classes will meet Thursdays from 10 a.m. to 3 p.m. for 12 weeks. Examples of topics to be covered include home vegetable production, home orchards, soils and fertilizers, native plants, annuals and perennials, plant propagation, weed control in home gardens and landscapes, plant diseases and insects, home turfgrass, and backyard wildlife. The cost of the class is $125. To register, call 221-3392.