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The Tree Book: Superior Selections for Landscapes, Streetscapes, and Gardens

By Michael A. Dirr and Keith S. Warren

Michael Dirr, the author of the iconic Dirr’s Trees and Shrubs, is widely acknowledged as one of the leading experts on woody plants. Keith Warren has shaped the American landscape through the introduction of tree cultivars. Together, they have penned what will be the go-to tree resource for decades. The Tree Book is a comprehensive survey of the trees commonly used in landscapes, streetscapes, and home gardens. The trees included are widely available in the nursery trade, new and promising choices, or overlooked options that deserve renewed interest. Each tree profile includes the common and botanical names along with details on foliage; flowers, seeds, fruits, and cones; native range; adaptability; and popular uses in landscapes. The Tree Book will be the authoritative, must-have resource for professional landscape architects, designers, nurserymen, advanced home gardeners, and students of horticulture and landscape design.

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About the authors

Michael A. Dirr

Michael A. Dirr, professor emeritus, horticulture, University of Georgia, is widely acknowledged as one of the leading experts on trees and shrubs for landscapes and gardens. He holds BS and MS degrees in horticulture from The Ohio State University and the Ph.D. from the University of Massachusetts. Dirr has introduced over 200 woody plants to cultivation and holds 29 patents with the UGA Research Foundation. With two partners, he established Plant Introductions, Inc., a breeding and introduction company in 2006, selling it to Bailey Nurseries in 2015. Dirr continues to work in lockstep with the American nursery industry to introduce and promote new trees and shrubs.

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Keith S. Warren

Keith S. Warren, tree breeder and nurseryman, has significantly reshaped the tree palette of the American landscape through introduction and promotion of improved tree cultivars. As Director of Product Development for J. Frank Schmidt and Son Co., one of the world’s largest nurseries, he created an extensive tree evaluation program, testing virtually every new deciduous cultivar during his 40-year career. Partnering with scientists, breeders, and nursery growers, he guided 87 new tree cultivars to commercial introduction, including 37 trademarked or patented trees from his personal breeding and selection work.

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