Articles & Tips

Dr. Dirr Blog

Michael A. Dirr, Ph.D is a horticulturist and a professor of horticulture at the University of Georgia. He is an expert on woody plants.

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By Dr Michael Dirr
2 Feb, 2022

Salt Tolerance in Woody Plants

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By Dr Michael Dirr
7 May, 2018

Styrax japonicus-Japanese snowbell

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Book

Dirr's Encyclopedia of Trees and Shrubs

Dirr's Encyclopedia of Trees and Shrubs is the most comprehensive visual reference to more than 3700 species and cultivars. From majestic evergreens to delicate vines and flowering shrubs, Dirr features thousands of plants and all the essential details for identification, planting and care. Color photographs show each tree's habit in winter, distinctive bark patterns, fall color and more. Dirr's Encyclopedia of Trees and Shrubs is a critical addition to any garden library.

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