Tellur Fenner is a clinical herbalist/educator and has traveled the country extensively while studying, collecting, and using plant medicines from all the major U.S. bioregions. He has attended the Northeast School of Botanical Medicine, the American School of Herbalism, the California School of Herbal Studies, and is currently completing the final year of a self-designed bachelor’s degree in clinical botanical medicine through Prescott College. Tellur is an avid camper/hiker, a skilled and experienced outdoor trip leader, and is a certified Wilderness First Responder. As an herbalist of the “generalist” persuasion, he believes in the importance of an interdisciplinary practice which integrates botany, pharmacy, physiology, and other medical sciences. He has taught classes for the Regional Parks Botanic Garden in Berkeley, CA, San Francisco Botanical Garden, TrackersBay, Garden’s at Heather Farm in Walnut Creek, CA, Point Reyes Field Seminars, and a number of other venues throughout the San Francisco Bay Area...and beyond. | ![]() |
Glenn Keator, PhD grew up in the San Francisco Bay Area and has worked as a free-lance botanist, teacher, field trip leader, and writer for most of his life. He specializes in California native plants: their identification, ecology, uses, and culture in local gardens. Glenn teaches at several local institutions including Merritt College, San Francisco Botanical Gardens, Regional Parks Botanic Garden, College of Marin, and others. He has written several popular books: The Life of an Oak: An intimate Portrait, Designing California Native Gardens, California Plant Families: West of the Sierran Crest and Deserts, to name just a few. Dr. Keator also made significant contributions to the writing of California’s primary flora: “The Jepson Manual: Higher Plants of California”. | ![]() |

