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North Dakota Planting Calendar

North Dakota spans USDA hardiness zones 3a, 3b, 4a, 4b. 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 North Dakota

Growing Season Comparison

Frost Dates & Growing Season by County

View all 53 North Dakota counties with frost dates
County Zone Last Frost First Frost Growing Days
Adams County 4a May 14 Sep 27 136
Barnes County 4a May 9 Sep 29 143
Benson County 3b May 13 Sep 27 137
Billings County 4a May 19 Sep 21 125
Bottineau County 3b May 15 Sep 23 131
Bowman County 4a May 15 Sep 24 132
Burke County 3b May 14 Sep 24 133
Burleigh County 4a May 12 Sep 27 138
Cass County 4a May 11 Oct 2 144
Cavalier County 3a May 13 Sep 28 138
Dickey County 4a May 10 Sep 29 142
Divide County 3b May 15 Sep 20 128
Dunn County 4a May 14 Sep 23 132
Eddy County 3b May 13 Sep 27 137
Emmons County 4a May 12 Sep 28 139
Foster County 3b May 10 Sep 30 143
Golden Valley County 4a May 14 Sep 22 131
Grand Forks County 3b May 11 Sep 30 142
Grant County 4a May 14 Sep 28 137
Griggs County 4a May 11 Sep 30 142
Hettinger County 4a May 14 Sep 27 136
Kidder County 4a May 14 Sep 28 137
LaMoure County 4a May 11 Sep 29 141
Logan County 4a May 13 Sep 28 138
McHenry County 3b May 17 Sep 22 128
McIntosh County 4a May 12 Sep 28 139
McKenzie County 4a May 15 Sep 21 129
McLean County 4a May 12 Sep 30 141
Mercer County 4a May 16 Sep 24 131
Morton County 4a May 14 Sep 23 132
Mountrail County 3b May 17 Sep 22 128
Nelson County 3b May 12 Sep 27 138
Oliver County 4a May 14 Sep 26 135
Pembina County 3b May 15 Sep 28 136
Pierce County 3b May 17 Sep 22 128
Ramsey County 3b May 13 Sep 24 134
Ransom County 4a May 8 Oct 3 148
Renville County 3b May 13 Sep 27 137
Richland County 4a May 6 Oct 6 153
Rolette County 3b May 17 Sep 22 128
Sargent County 4a May 8 Oct 3 148
Sheridan County 3b May 12 Oct 1 142
Sioux County 4a May 12 Oct 1 142
Slope County 4a May 15 Sep 24 132
Stark County 4a May 14 Sep 23 132
Steele County 3b May 11 Oct 1 143
Stutsman County 4a May 9 Sep 30 144
Towner County 3b May 15 Sep 23 131
Traill County 3b May 10 Oct 1 144
Walsh County 3b May 14 Sep 30 139
Ward County 3b May 13 Sep 27 137
Wells County 3b May 11 Sep 29 141
Williams County 4a May 14 Sep 22 131

🥬 Vegetables

Browse all 116 vegetables you can grow in North Dakota

🍓 Fruits

Browse all 34 fruits you can grow in North Dakota

🌿 Herbs

Browse all 42 herbs you can grow in North Dakota

Monthly Planting Guide for North Dakota

Level Up Your Garden

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