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Experts on Cacti and Succulents

Scott Calhoun

Scott Calhoun is an award-winning author and garden designer based in Tucson, Arizona, and the author of several award-winning gardening books. He writes a monthly garden column for Sunset magazine and has written for most national gardening magazines. In his design practice, he incorporates cactus into every residential space and sees them as the plant family of the future — especially in arid parts of the world.

Leo J. Chance

Leo J. Chance is a professional gardener based in Colorado Springs and Pueblo, Colorado. He has also worked as a professional plant buyer and propagator. A member of the Cactus and Succulent Society of America and the Colorado Cactus and Succulent Society, Leo lectures frequently about cacti and succulents, as well as water-wise gardening.

Kristin Green

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.

Mary Irish

Mary Irish is a prominent voice in southwestern horticulture. She once hosted a weekly Phoenix-based radio show called "The Arizona Gardener," and has appeared on countless news and lifestyle programs on television regarding desert gardening.

Roger Marshall

Roger Marshall is the editor of Home Greenhouse magazine, the magazine of the Hobby Greenhouse Association, and a member of the Garden Writers Association, the Ocean State Orchid Association, and the Rhode Island Dahlia Society. He is also the author of How to Build Your Own Greenhouse.

Scott Ogden and Lauren Springer Ogden

Scott Ogden and Lauren Springer Ogden lecture internationally, emphasizing plant diversity and ecological attunement. They draw inspiration from studying wild plants in the United States, Mexico, Argentina, Europe, and South Africa. They have spoken at most major botanic gardens, public gardens, and arboreta in the United States.

Jessica Walliser

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.

Ellen Zachos

Ellen Zachos lectures on houseplants for horticultural organizations around the world. As a professional photographer, she illustrates her lectures with high-quality slides. A former Broadway performer Ellen recently released her first CD combining her two passions, plants and music.