Bill Cullina: Executive Director

Philadelphia, PA – Bill Cullina has been appointed as the F. Otto Haas Executive Director of the Morris Arboretum. He has extensive experience in public garden leadership, fundraising, education, and horticulture, and is a well know author and lecturer.

Most recently, Cullina was President and CEO of the Coastal Maine Botanical Garden where he led the development of a 20-year master plan and launched a $50 million capital campaign to develop the plan’s first phase. During his tenure, he completed a new $4.2 million net-zero energy LEED platinum Education Center and grew annual attendance by 250% and membership by 50%. Previously, Cullina was the Nursery Director and Head Propagator at New England Wildflower Society in Massachusetts.

A recognized authority on North American native plants, Cullina lectures on a variety of subjects to garden and professional groups, writes for popular and technical journals, and is the author of numerous books on horticulture.

Morris Arboretum is one of more than 30 Philadelphia gardens in America’s Garden Capital. This 92-acre horticultural display garden features a spectacular collection of mature trees in a beautiful and colorful landscape. The Arboretum offers educational programs for many audiences ranging from youth to professional and is a leader in botanical and horticultural research. The official arboretum of the Commonwealth of Pennsylvania, Morris Arboretum is listed on the National Register of Historic Places and accredited by the American Association of Museums. For more information, visit