Dr. Armitage is internationally known as a writer, speaker, and researcher. He has written more than 250 articles and papers in journals, such as Fine Gardening, Horticulture Magazine, American Nurseryman, Greenhouse Grower, Grower Talks, Plant Physiology, and the journals of the American Society of Horticultural Science. He writes a monthly column about new crops and new trends in floriculture for Greenhouse Grower magazine. Read Allan's bio to learn more about one of America's favorite gardeners.

Jim has one of the best-known faces and voices among TV gardeners. For 10 years, beginning in 1984, he appeared as co-host on the PBS Television program The Victory Garden. He also appeared on HGTV as co-host with Peter Seabrook on episodes of the Great Gardeners series. Read Jim's bio to learn more about this gardening master.