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Basil Growing Season for North Dakota

The NOAA National Climatic Data Center provides information to the public about spring and fall frost dates in the United States and the length of the expected growing season for each area. These statistics are calculated using data collected from 1971 to 2000, across 4300 weather stations located in every part of the country.

While informative, the statistics that NOAA provides is overwhelming. So, we took the liberty of extracting the most basic information that we feel would be useful to someone interested in growing basil outdoors.

The table below lists the date after which it should be safe to plant basil outdoors in each area of the state. This information is based on NOAA’s calculations for a 10% probability of temperatures falling below 36 degrees Fahrenheit. This means that, on average, there is only a 10% chance that you will see frost after this date. Also listed is the estimated length of the growing season. This is how many days you can expect to have before the risk of frost is greater than 10%.

Please use this information at your own risk. You must take into consideration many varying factors, for example, micro-climates or the presence of valleys and bodies of water, to determine your actual growing season.

StateCountyLast Frost DateLength of Growing Season
NDBarnes6/0592
NDBenson6/1283
NDBillings6/2269
NDBottineau6/1862
NDBowman6/1484
NDBurke6/2663
NDBurleigh6/2767
NDCass5/29103
NDCavalier6/2068
NDDickey6/0395
NDDivide6/0984
NDDunn6/1089
NDEddy6/0886
NDEmmons6/2469
NDFoster6/03101
NDGolden Valley6/1581
NDGrand Forks6/1281
NDGrant6/2076
NDGriggs6/0889
NDHettinger6/1087
NDKidder6/0882
NDLamoure5/31105
NDLogan6/0691
NDMchenry6/0394
NDMcintosh6/2272
NDMckenzie6/1772
NDMclean6/0293
NDMercer6/2168
NDMorton6/2461
NDMountrail6/1381
NDNelson6/1082
NDOliver6/1674
NDPembina6/0789
NDPierce6/0781
NDRamsey6/03100
NDRansom6/1089
NDRenville6/0987
NDRichland6/0793
NDRolette7/1039
NDSargent6/0297
NDSheridan5/30104
NDSioux6/0594
NDSlope6/1384
NDStark6/1190
NDSteele6/0881
NDStutsman6/0597
NDTowner6/2267
NDTraill5/28104
NDWalsh6/0983
NDWard6/0592
NDWells6/0295
NDWilliams6/1488