Dr. David D Gibby has taught at Utah State, Weber State and Washington State Universities in various horticultural and botanical subjects. He has appeared as a guest horticultural and gardening expert while as a university extension agent for Washington State University on three network television stations. Dr. Gibby is well known as the author of the International Master Gardener Program whose volunteer members currently serve clients numbering in the millions. He has been a guest lecturer at numerous garden clubs and other venues. He has a PhD in plant physiology and is a lifelong horticulturalist. He is part owner of various horticultural enterprises including Sandia farms in Saint George, Utah and Gibby Floral and Greenhouses in Ogden, UT.