UMaine Horticulturist Stack in PBS NewsHour Report
Comments from University of Maine Cooperative Extension professor and ornamental horticulturist Lois Berg Stack were included in a national PBS NewsHour news blog on the new, interactive USDA Plant Hardiness Map, which reflects shifting climate zones in the United States. It serves as a guide for farmers and gardeners to see minimum temperatures across the country by zone. The new map, updated after 26 years, indicates rising temperatures in New England, which Stack said could lead to cold-loving trees like the paper birch moving northward.
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