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Crop Planting Dates in South Dakota

Published planting and harvest windows for 10 crops in South Dakota, in one calendar. Ranges only, with sources.

Windows in South Dakota
CropPlantingHarvest
Alfalfa hayMay 29 to Sep 20
CornPlanting: Apr 26 to Jun 10Sep 24 to Dec 3
Durum wheatPlanting: Mar 31 to May 21Jul 20 to Aug 29
SorghumPlanting: May 11 to Jun 30Sep 21 to Nov 17
SoybeansPlanting: May 8 to Jun 21Sep 22 to Nov 3
Spring barleyPlanting: Apr 6 to May 24Jul 20 to Aug 27
Spring oatsPlanting: Apr 3 to May 23Jul 14 to Aug 23
Spring wheatPlanting: Mar 31 to May 21Jul 20 to Aug 29
SunflowersPlanting: May 16 to Jun 29Sep 25 to Nov 21
Winter wheatPlanting: Sep 1 to Oct 16Jul 8 to Aug 13

Calendar view

Planting calendar for South Dakota
ItemJanFebMarAprMayJunJulAugSepOctNovDec
Alfalfa hay harvestHarvest window in MayHarvest window, most active in JuneHarvest window, most active in JulyHarvest window, most active in AugustHarvest window, most active in September
Corn plantingPlanting window in AprilPlanting window, most active in MayPlanting window in June
Corn harvestHarvest window in SeptemberHarvest window, most active in OctoberHarvest window, most active in NovemberHarvest window in December
Durum wheat plantingPlanting window in MarchPlanting window, most active in AprilPlanting window, most active in May
Durum wheat harvestHarvest window, most active in JulyHarvest window, most active in August
Sorghum plantingPlanting window, most active in MayPlanting window, most active in June
Sorghum harvestHarvest window in SeptemberHarvest window, most active in OctoberHarvest window, most active in November
Soybeans plantingPlanting window, most active in MayPlanting window, most active in June
Soybeans harvestHarvest window, most active in SeptemberHarvest window, most active in OctoberHarvest window in November
Spring barley plantingPlanting window, most active in AprilPlanting window, most active in May
Spring barley harvestHarvest window, most active in JulyHarvest window, most active in August
Spring oats plantingPlanting window, most active in AprilPlanting window, most active in May
Spring oats harvestHarvest window, most active in JulyHarvest window, most active in August
Spring wheat plantingPlanting window in MarchPlanting window, most active in AprilPlanting window, most active in May
Spring wheat harvestHarvest window, most active in JulyHarvest window, most active in August
Sunflowers plantingPlanting window, most active in MayPlanting window, most active in June
Sunflowers harvestHarvest window in SeptemberHarvest window, most active in OctoberHarvest window, most active in November
Winter wheat plantingPlanting window, most active in SeptemberPlanting window, most active in October
Winter wheat harvestHarvest window, most active in JulyHarvest window, most active in August
Frost-date caveat: published dates are averages. Find your own last and first frost dates and compare them with these ranges before you plant.

Last reviewed: November 2026. Source: USDA NASS, Field Crops Usual Planting and Harvesting Dates (October 2010 edition, copy hosted by Cornell University Mann Library). Dates are the usual start and end of the period when about 5% to 95% of the crop is planted or harvested, from long-run state progress data. They are historic averages, not a forecast.