When gardeners from different parts of the United States meet up, one common question we ask each other is, “What’s your Plant Hardiness Zone?” That leads to some inevitable scratching of heads when ...

Pine Hollow Arboretum’s founder, John W. Abbuhl, began planting trees around his Albany, N.Y., home in the 1960s. He planted species native to surrounding ecosystems but also made ambitious ...

Text on verso by Henry M. Cathey. "This map supersedes U.S. Department of Agriculture Miscellaneous Publication 814, "Plant Hardiness Zone Map," which was revised in 1965."--Map sheet verso. Insets: ...