On the shelf"Trees and shrubs make up the backbone of the garden," according to Marie Harrison.But don’t get discouraged if you don’t know the difference. In Flowering Shrubs and Small Trees for the South (Pineapple Press; $16.95, paperback), Harrison explains that and more. Covering planting and pruning basics, the compact reference guide explains how to deal with pests and diseases and includes a USDA hardiness zone map to use as a guide.A brief but thorough explanation on the binomial system of plant classification goes into the science — yes, it is a science, governed by rules and all — of plant naming.Data for each plant includes its scientific name, common names, pronunciation, hardiness, salt tolerance, family, size, origin and propagation, along with photos.— Martha Phifer, Orlando Sentinel