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.
Grissell — a member of the Garden Writers Association as well as a half dozen entomological and horticultural societies — has written three books on gardening, the latest of which encourages gardeners to take a broader and more benign look at their gardens and the insects in them.
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.