Peter Del Tredici is an Associate Professor in Practice of Landscape Architecture at the GSD where he has taught since 1991. He received a BA in Zoology from UC, Berkeley, an MA in Biology from the University of Oregon and a PhD in Plant Ecology from Boston University. He teaches courses on urban ecology, the structure and function of soils, and sustainable woody plants for designed landscapes.
In addition to teaching at the GSD, Del Tredici is a senior research scientist at the Arnold Arboretum of Harvard University, where he has worked since 1979. His research interests are wide-ranging and cover such topics as plant morphology, plant introductions from China, urban ecology, tree architecture, climate change, bonsai cultivation and design, and the history and biology of ornamental woody plants, especially hemlocks, Magnolias and Stewartias. He is also a specialist in the evolution, natural history and cultivation of the Ginkgo tree, which he has been studying since 1981. He is the author of more than one hundred scientific and popular articles about plants and the winner of the Arthur Hoyt Scott Medal for 1999—presented by the Scott Arboretum of Swarthmore College "in recognition of outstanding national contributions to the science and art of gardening." His most recent book, Wild Urban Plants of the Northeast: A Field Guide (2010, Cornell University Press), focuses on urban ecology and the identification of plants that grow spontaneously in cities. While Del Tredici has conducted research in many different areas over the course of his forty-year career in the plant sciences, his primary goal has always been to bridge the gaps that traditionally separate the fields of landscape design, horticulture and ecology.