Every plant has a ruler, a temperament, an hour. Pick the right plant at the right hour and the work goes easier — the dream sharper, the wound cleaner, the protection real. This is a working herbal of sixty plants at full depth, treated as kin and as physicians, with the small superstitions kept in and the actual chemistry kept honest. When to gather, how to prepare, what each plant rules and is ruled by, and how to ask its help. A book to be used, not shelved.