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More Garden InformationAlmanac Home Page
Garden Home Plant Hardiness Zones Map
UW Extension
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USDA Plant Hardiness Zones for WisconsinThis is an enlarged version of the 1990 USDA Plant Hardiness Zone Map, for the state of Wisconsin. USDA plant hardiness zones are used to select perennials, landscape plantings and fruit trees that will survive over winter in your location. Check the color of the section in your area on the map with the color key below. Please note that zone boundaries are approximate! Especially if you are near a boundary area, your local topography, orientation and exposure will be significant in determining your plantings' hardiness.
USDA Hardiness Zones and Average Annual Minimum Temperatures
Temperatures listed are the average yearly minimum temperatures, not the coldest temperatures ever recorded. A plant not fully dormant can be damaged at much warmer temperatures. Other factors, including soil conditions, chilling requirements and growing degree days, are critical to plant performance within a climate zone. |