Can beer make plants grow? How about buttermilk? Or music—classical or rock? Are you sure about planting trees in deep holes? And how about chasing insects with hot sauce and stopping slugs with eggshells? Whether in ancient books, on television, or in gardening publications, remedies for all your garden woes are there for the taking: the challenge is to know what will work and what won't. Fearlessly conducting original experiments and harvesting wisdom from scientific literature, horticulturalist Jeff Gillman assesses new and historic advice and reveals the how and why—and sometimes the why not—for more than 100 common and uncommon gardening practices. The results will surprise even experienced gardeners.