Greg Speichert is director of Hilltop Garden and Nature Center at Indiana University Bloomington. A nationally-recognized expert in water plants, he has conducted research on many species, and has developed and introduced varieties of iris, coleus, and ornamental grasses.
With his wife Sue, he published Water Gardening Magazine and owned and operated Crystal Palace Perennials, a plant nursery that specialized in unusual water plants and rare and endangered perennials. He is the author of three books, including The Encyclopedia of Water Garden Plants, and has published a number of articles in Fine Gardening and American Nurseryman magazines.