2029903
9781563731761
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The United States Department of Agriculture (USDA) divides the United States into 10 climate zones that are based on the average first and last frost dates in each zone. The dates determine the length of the growing season, or frost-free days, in each zone. The zones are numbered north to south, I through 10; the lower the number, the colder the winter and the shorter the growing season.Carter, Louise is the author of 'Northeast Gardener's Guide 2005 Calendar', published 0013 under ISBN 9781563731761 and ISBN 1563731762.
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