Botanical.com
Botanical.com: botanical & herbal information, organic herbs, spices, teas, herbal products hydroponic and indoor growing supplies
http://www.botanical.com/
Healthwell
Healthwell
http://www.healthwell.com/
Herbmed
Herbmed® is an interactive herbal database that links directly to the scientific evidence from medline and other research resources on the use of herbs for health, used by doctors, researcher, pharmacists, and patients.
http://www.herbmed.org/
Purple Sage
Purple Sage
http://www.purplesage.org.uk/