Principal, Harriet Henderson earned her degree in landscape architecture from Cornell University, where she also received a postgraduate grant, the William F. Dreer award to study Japanese garden design in Kyoto, Japan. She combined independent study of historic gardens through Kyoto University, an internship with noted landscape architect Kinsaku Nakane, and hands-on work experience as a crewmember of the landscape design/build firm, Teraishi Zoen.

Traveling on to Korea, China and Taiwan, she studied precedents to Japanese garden design, and she worked with David Engel in New York on projects combining Japanese and American design. The integration of Japanese architecture and gardens was an important source of inspiration for creating unified indoor and outdoor spaces, and led to a Masters in Architecture degree from the University of Pennsylvania.

With more than 30 years in landscape architecture, her work has included designs for college campuses, city parks, office parks and plazas, churches, mixed-use developments, horse farms and high-end residential landscapes.

Harriet has worked simultaneously for 20 of those years in architectural design. Primarily focused on residential work, she links building design and scale with landscape architecture.

Her background in horticulture includes a prestigious internship at Longwood Gardens. Staying current with new horticultural introductions, native plants and green technology is the focus of her continuing education.

Sharing her studies and practical knowledge throughout the eastern United States since 1981, Henderson has been lecturing on garden design and history, teaching landscape architecture history at the Barnes Arboretum for more than 20 years, and publishing articles on Japanese garden design. Her written contributions are included in the Brooklyn Botanic Garden’s Japanese Garden Handbook as well as International Bonsai magazine.


Principal, Steve Cushing provides engineering support to landscape architectural and architectural projects, including general civil, geotechnical and structural engineering. He also brings invaluable construction management experience to the construction process.

A graduate of Cornell University, Steve has undergraduate and masters degrees in civil engineering. In addition, he completed the Wharton Management Program at the University of Pennsylvania. He has over 30 years of experience in project management and engineering, spanning institutional, commercial and residential sectors from coast to coast and overseas.