When to plant radishes in Iowa

Radishes
Sow outdoors in Des Moines
Mar 14–Apr 25

Across Iowa the window opens between March 11 and March 25. Find your city below; the dates follow each town's own average last frost.

Sow outdoors, Des Moines
Mar 14–Apr 25
Fall planting, Des Moines
Sep 8–Sep 22
Last frost, Des Moines
Apr 18

Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. The fastest crop in the garden. Sow a short row every week in spring and fall.

Radishes planting dates by city

Start indoorsPlant outSow outdoorsFall plantingAverage last and first frost
JanFebMarAprMayJunJulAugSepOctNovDec
Des MoinesMar 14–Apr 25
Cedar RapidsMar 23–May 4
DavenportMar 15–Apr 26
Sioux CityMar 25–May 6
AnkenyMar 19–Apr 30
Iowa CityMar 17–Apr 28
West Des MoinesMar 14–Apr 25
AmesMar 22–May 3
WaterlooMar 23–May 4
Council BluffsMar 14–Apr 25
DubuqueMar 15–Apr 26
UrbandaleMar 15–Apr 26
MarionMar 24–May 5
Cedar FallsMar 23–May 4
BettendorfMar 12–Apr 23
WaukeeMar 14–Apr 25
MarshalltownMar 24–May 5
Mason CityMar 25–May 6
OttumwaMar 19–Apr 30
JohnstonMar 15–Apr 26
Fort DodgeMar 24–May 5
ClintonMar 18–Apr 29
CoralvilleMar 17–Apr 28
BurlingtonMar 11–Apr 22
MuscatineMar 20–May 1
AltoonaMar 19–Apr 30
North LibertyMar 17–Apr 28

Questions

When should I plant radishes in Iowa?

In Des Moines, sow outdoors from March 14 to April 25. Across Iowa the window opens between March 11 and March 25, depending on the local last frost.

How is this date worked out?

Sow outdoors from 5 weeks before to 1 weeks after the last frost; sow again for fall 4–6 weeks before the first frost. Frost dates are NOAA 1991–2020 averages for the weather station nearest each city.

More for Iowa

Radishes in other states

Frost dates for every city in Iowa