When to plant pumpkins in South Dakota

Pumpkins
Sow outdoors in Sioux Falls
May 10–May 24

Across South Dakota the window opens between May 10 and May 22. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Sioux Falls
May 10–May 24
Last sowing for a harvest
Jun 1
Last frost, Sioux Falls
Apr 26

Sow outdoors 2–4 weeks after the last frost. For Halloween pumpkins, count back the variety's days to maturity from late September.

Pumpkins planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
Sioux FallsMay 10–May 24
Rapid CityMay 17–May 31
AberdeenMay 22–Jun 5
BrookingsMay 20–Jun 3
WatertownMay 21–Jun 4

Questions

When should I plant pumpkins in South Dakota?

In Sioux Falls, sow outdoors from May 10 to May 24. Across South Dakota the window opens between May 10 and May 22, depending on the local last frost.

How is this date worked out?

Sow outdoors 2–4 weeks after the last frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for South Dakota

Pumpkins in other states

Frost dates for every city in South Dakota