Henriette's herbal blog: The PD stands for product development, in case you were wondering.
Henriette's herbal blog: The making of peppermint sugar.
Classic texts: Pereira 1854.
Classic texts: King's 1898.
Henriette's herbal is one of the oldest and largest herbal medicine sites on the net. It's been online since 1995, and is run by Henriette Kress, a herbalist in Helsinki, Finland.
Plant Healer Magazine: Very relevant to the practitioner.
http://www.henriettes-herb.com - Copyright 1995–2017 Henriette Kress.