Hardiness zones are geographical area in which a given category of plants are able to grow and survive.
40+ U.s. Department Of Agriculture Plant Hardiness Zones 4 Through 9 US. But state, regional, and national images of the map can be downloaded and printed in a variety of sizes and resolutions. In essence, plant hardiness zones have been used by growers for years to simply identify the plants that are most likely to survive the winter in their area.
State Maps of USDA Plant Hardiness Zones from fthmb.tqn.com
All hardiness zones are divided into two subsets, a and b. Of agriculture, agricultural research service ; Did you know the usda plant hardiness zones have changed?
Since 1960, the united states department of agriculture (usda) has compiled the range of temperatures across north america and created maps that the usda divides north america into 11 hardiness zones, each of which represents an area of winter plant hardiness.
The usda plant hardiness zone map is a useful guide, but it is only one small part of the picture. Usda plant hardiness zone map: Hardiness zones or ratings are listed in gardening magazines, reference books, plant catalogs and on seed packets. Based on the usda hardiness zone map, this interactive version covers the country of russia which ranges from zone 2a to zone 9b.
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