Warren Leach is a passionate plant collector, landscape horticulturist, and award-winning garden designer. He has received, twice, the National Landscape Association Regional Certificate of Merit for Residential Landscape Design. In 2009 was awarded by the Rhode Island Nursery and Landscape Association 1st Place for Residential Design and Installation for his ornamental vegetable garden at Brigham Hill Farm in North Grafton, images of which are archived at the Smithsonian Institution in Washington, D.C. In 2010, the Massachusetts Horticultural Society honored Leach with a Gold Medal for his horticultural expertise, landscape design as well as years of forcing plants and creating exceptional displays in the New England Spring Flower Show. He is an admired speaker and educator at numerous horticultural institutions and organizations throughout the Northeast, and has taught horticulture and landscape design at The University of Rhode Island, the Brown University Learning Community, Rhode Island School of Design Continuing Education and is a frequent instructor at the Arnold Arboretum of Harvard University, as well as numerous garden clubs and botanical gardens.