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Wisconsin Planting Calendar

Wisconsin spans USDA hardiness zones 3b, 4a, 4b, 5a, 5b. Planting dates vary significantly across the state depending on your zone. Find your county on the map below for exact frost dates and planting windows.

Find Your County

Click any county to see your local planting calendar with exact frost dates and planting windows.

Zones in Wisconsin

Growing Season Comparison

Frost Dates & Growing Season by County

View all 72 Wisconsin counties with frost dates
County Zone Last Frost First Frost Growing Days
Adams County 4b May 6 Oct 5 152
Ashland County 3b May 20 Sep 27 130
Barron County 4a May 17 Sep 25 131
Bayfield County 3b May 14 Oct 3 142
Brown County 4b May 8 Oct 6 151
Buffalo County 4b May 12 Sep 30 141
Burnett County 3b May 15 Sep 27 135
Calumet County 4b Apr 30 Oct 12 165
Chippewa County 4a May 15 Sep 28 136
Clark County 4a May 13 Sep 30 140
Columbia County 4b May 3 Oct 7 157
Crawford County 4b Apr 27 Oct 9 165
Dane County 5a Apr 30 Oct 9 162
Dodge County 4b Apr 27 Oct 11 167
Door County 5a May 11 Oct 8 150
Douglas County 3b May 16 Sep 28 135
Dunn County 4a May 12 Sep 29 140
Eau Claire County 4a May 10 Oct 3 146
Florence County 4a May 26 Sep 21 118
Fond du Lac County 4b Apr 27 Oct 14 170
Forest County 4a May 20 Sep 30 133
Grant County 4b Apr 28 Oct 8 163
Green County 5a Apr 27 Oct 11 167
Green Lake County 4b Apr 27 Oct 14 170
Iowa County 4b May 3 Oct 7 157
Iron County 3b May 22 Sep 25 126
Jackson County 4b May 13 Oct 2 142
Jefferson County 5a Apr 27 Oct 12 168
Juneau County 4b May 5 Oct 5 153
Kenosha County 5b Apr 22 Oct 16 177
Kewaunee County 4b May 3 Oct 11 161
La Crosse County 4b May 4 Oct 5 154
Lafayette County 4b Apr 28 Oct 9 164
Langlade County 4a May 16 Sep 30 137
Lincoln County 4a May 19 Sep 28 132
Manitowoc County 5a Apr 30 Oct 12 165
Marathon County 4a May 11 Oct 2 144
Marinette County 4b May 18 Oct 1 136
Marquette County 4b May 3 Oct 7 157
Menominee County 4a May 9 Oct 4 148
Milwaukee County 5b Apr 27 Oct 11 167
Monroe County 4b May 9 Oct 3 147
Oconto County 4b May 9 Oct 4 148
Oneida County 4a May 20 Sep 28 131
Outagamie County 4b May 8 Oct 5 150
Ozaukee County 5a Apr 27 Oct 11 167
Pepin County 4a May 2 Oct 7 158
Pierce County 4a Apr 28 Oct 8 163
Polk County 4a May 12 Sep 29 140
Portage County 4b May 5 Oct 6 154
Price County 3b May 17 Sep 29 135
Racine County 5b Apr 24 Oct 13 172
Richland County 4b May 5 Oct 5 153
Rock County 5a Apr 26 Oct 13 170
Rusk County 4a May 16 Sep 28 135
Sauk County 4b May 3 Oct 7 157
Sawyer County 3b May 17 Sep 25 131
Shawano County 4b May 8 Oct 5 150
Sheboygan County 5a Apr 27 Oct 17 173
St. Croix County 4b Apr 28 Oct 9 164
Taylor County 4a May 16 Sep 29 136
Trempealeau County 4b May 15 Sep 30 138
Vernon County 4b Apr 28 Oct 9 164
Vilas County 4a May 21 Sep 29 131
Walworth County 5a Apr 26 Oct 13 170
Washburn County 3b May 17 Sep 25 131
Washington County 5a Apr 27 Oct 11 167
Waukesha County 5a Apr 27 Oct 12 168
Waupaca County 4b May 8 Oct 5 150
Waushara County 4b Apr 30 Oct 9 162
Winnebago County 4b Apr 30 Oct 12 165
Wood County 4b May 9 Oct 3 147

🥬 Vegetables

Browse all 116 vegetables you can grow in Wisconsin

🍓 Fruits

Browse all 34 fruits you can grow in Wisconsin

🌿 Herbs

Browse all 42 herbs you can grow in Wisconsin

Monthly Planting Guide for Wisconsin

Level Up Your Garden

Data sources: USDA Plant Hardiness Zone Map (2023), NOAA 30-Year Climate Normals. Last updated: April 2026.