Experts on Science and Natural History
Kathryn Aalto is a landscape designer, historian, writer, and speaker living in Exeter, England. American by birth, she has master’s degrees in garden history and creative nonfiction with a particular interest in literary landscapes. Passionate about walking and natural history, she recently completed the Coast to Coast Walk across England with her family.
Rosemary Alexander has devoted her life to garden design — running a garden design business as well as the English Gardening School. She believes that as people realize the therapeutic nature of gardening, garden design will become even more popular.
Tomasz Aniśko is curator of plants at the internationally renowned Longwood Gardens. A Polish native, he holds a master's degree and a doctorate in horticulture, and has collected plants for Longwood Gardens on 17 international expeditions.
Regarded as one of the world's foremost horticulturists, Allan M. Armitage travels as a lecturer and consultant. Charming and lively as well as knowledgeable, Allan is in constant demand as a speaker, and sees working with plants as therapeutic, exciting, and creative.
Tony Avent, a well known lecturer and garden writer, founded Plant Delights Nursery to help fund Juniper Level Botanic Gardens, a display and research garden with over 11,000 plants. Tony sold plants as a young child; as an adult, selling plants is a natural extension.
Linda Beutler has been the curator of the Rogerson Clematis Collection since 2007 and in 2013 was elected the first American president of the International Clematis Society.
Dave Boehnlein serves as the education director at Bullock's Permaculture Homestead on Orcas Island, Washington. He is also the principal and a founder of Terra Phoenix Design, where he helps clients around the globe achieve their sustainability goals through integrated master planning.
C. Colston Burrell is an avid and lifelong gardener, garden designer, award-winning author, photographer, naturalist, and teacher. He lectures at the College of Architecture and Landscape Architecture at the University of Virginia, and grows all the hellebore species in his garden near Charlottesville, Virginia.
Photographer for The Naturescaping Workbook, Karen Bussolini has been a gardener for as long as she can remember, and specializes in garden photography, writing, and lecturing. She sees connections between disciplines and has long been involved in organic, environmentally conscious gardening.
Linda Chalker-Scott is an associate professor and extension urban horticulturist at Washington State University. She has written three other books and has published extensively in American Nurseryman, Organic Gardening, Fine Gardening, and more.
Whitney Cohen is the education director at Life Lab and presents garden-based learning workshops for educators across the country. Her expertise in gardening with children comes from years as an environmental educator, a middle school science teacher, a teacher trainer, and, most recently, a mother.
David Deardorff is a botanist and expert plant pathologist. He earned his Ph.D. in botany from the University of Washington. He coordinated plant pathology research at the University of Hawaii and served as faculty adviser to the Master Gardener program at Washington State University.
Augustus Jenks Farmer's vision for reflective, soulful gardening guided gardeners, craftsmen, volunteers, and scientists to create two lauded public botanical gardens as well as art museums, city parks, and private enclaves. His connoisseurs' nursery promoted the renaissance of the crinum lily, a forgotten, beloved plant of early American gardens. Today, he ships organically grown crinum lilies all over the country.
John Fisher is Life Lab's director of outreach and communication. He designed and helped build Life Lab's one-acre garden classroom, and has created videos and websites on garden-based learning for Life Lab and the University of California Santa Cruz Farm.
For 30 years, Jo Ann Gardner and her husband operated a hand- and horse-powered farm on Cape Breton Island. They now live in the Adirondacks where they have a small farm with extensive gardens. Gardner writes, lectures, and conducts classes on herbs, heirlooms, hardy roses, and biblical flora.
Jeff Gillman loathes advice that is given without concern for the consequences. He wrote a tell-all book after hearing self-proclaimed experts spouting things such as feeding syrup to plants, and lectures on a variety of topics including homebrewed remedies and organic pesticides.
Kristin Green first unearthed a passion for gardening while on the West Coast earning degrees in art and painting from the University of Washington. Now back on native soil, she is a full-time, year-round gardener serving as interpretive horticulturist, garden blogger, and photographer at Blithewold Mansion, Gardens & Arboretum, a 33-acre non-profit public garden in Bristol, Rhode Island.
Daniel J. Hinkley writes for numerous horticultural publications and is in high demand as a speaker throughout North America, Europe, Australia, New Zealand, and Japan. He has been awarded the Scott Medal, the Liberty Hyde Bailey Award, and the Veitch Memorial Medal, among others. He serves as horticultural consultant to Monrovia Growers and to several design firms, including Gustafson Guthrie Nichol, Portico, and The Berger Partnership.
Noel Kingsbury is a well-known designer, commentator, and writer on plants, gardens, landscape, and the environment. A a passionate advocate for sustainable plant combinations, he trials plants and gardens at his home on the border between England and Wales and travels widely.
Donald J. Leopold, a long-standing member of the Ecological Society of America, has studied native plants for nearly 30 years. He has taught courses in dendrology, plant materials, freshwater wetland ecology, and numerous graduate seminars on conservation and restoration topics.
Meleah Maynard is a journalist, editor, speaker, and master gardener. Her articles, essays, and columns have appeared in regional and national magazines and newspapers, including Northern Gardener, Garden, Deck & Landscape, Southwest Journal, Gardening How-To, History Channel and Midwest Home.
Marta McDowell lives, gardens, and writes in Chatham, New Jersey. She writes and lectures on gardening topics and teaches landscape history and horticulture at the New York Botanical Garden, where she studied landscape design. She also consults for public gardens and private clients. Her particular interest is in authors and their gardens, the connection between the pen and the trowel.
Larry Mellichamp is a professor of botany at the University of North Carolina at Charlotte and director of the university's botanical gardens. He has written many technical and popular articles on plants and gardening, appears regularly in the local media, and has co-authored four books, including Bizarre Botanicals.
Max Smith is a wildlife biologist currently working with the U.S. Forest Service. Since 2003, he has studied the mechanisms through which invasive plants and wildfire influence the reproductive success of birds.
Steven L. Stephenson is a research professor at the University of Arkansas in Fayetteville, where he served as director of a worldwide project to document the distribution of all the slime molds and their relatives. He has studied fungi and slime molds on six continents.
A frequent lecturer for horticultural and natural resource organizations, Guy Sternberg holds the official oak genus Quercus living reference collection for North America. He was the first president of the International Oak Society and is a life member of the International Dendrology Society.
Judith Sumner is a popular lecturer for botanical and horticultural organizations, ranging from various garden clubs to the New York Botanical Garden. Her lectures are attended by inquisitive students of all ages, and she has been honored with awards for excellence in teaching.
Sarah Swanson has worked as an environmental educator for the Audubon Society of Portland. She loves teaching adults and children about natural history by leading field trips and classes.
Kathryn Wadsworth is a writer, photographer, and naturalist, who enjoys sharing the wonders of the natural world with others. Currently, she can be found presenting workshops around the United States on a wide variety of topics, from gardening to ecology.
Jessica Walliser cohosts The Organic Gardeners on KDKA radio in Pittsburgh, Pennsylvania. Her column "The Good Earth" appears twice weekly in the Pittsburgh Tribune-Review, and she is a regular contributor to Fine Gardening, Urban Farm, Popular Farming, Hobby Farms, and Hobby Farm Home magazines.
Bobby J. Ward travels extensively in order to interview modern plant explorers and see the landscape and locations where they do their species collecting. In his spare time, he enjoys reading and a sweet, peaceful dedication to his private gardens.