The Encyclopedia of Herbs and Herbalism

Very good herbals split into 7 main section:

1. History of herbalism
2. Biology and chemistry of plants
3. Medicinal uses of plants
4. Herbs in the kitchen
5. Domestic and cosmetic uses of herbs
6. Cultivation and preservation of herbs
7. A-Z of herbs illustrated with monochrome line drawings & photos

Introductory sections very thorough in history and biology. Lots of useful recipes in sections 3-5.

Cultivation section has both garden designs and lists of hers suitable for specific situations plus excellent table summarising habit, soil and position requirements, how to propagate and when to harvest.