Leechcraft: Early English Charms, Plantlore and Healing is a book written by Stephen Pollington and available from Anglo-Saxon Books. This description is available from the official website:

An unequaled examination of every aspect of early English healing, including the use of plants, amulets, charms, and prayer. Other topics include: Anglo-Saxon witchcraft, shamanism, tree-lore, omens, dreams, runes, gods, elves, dwarfs, and theories of magic.