Mrs. M. Grieve’s 1931 classic, A Modern Herbal, is now available entirely online. The book offers insights into medicinal and culinary uses of herbs, and includes recipes, cultural information and folklore.

Naturopathic physician and herbalist Sharol Tilgner, ND, offers the materia medica section of her botanical classic Herbal Medicine from the Heart of the Earth, with database listings searchable by both common name and botanical Latin name.

Natural Capital(TM) Plant Database gives detailed information about growing and using plants generally, including medicinal applications with citations.

The NUNM Library offers a special portal designed for herbal-medicine research.