When to plant Radishes in Oklahoma

In spring, from Jan 1 – Apr 15 in Ardmore to Mar 10 – May 10 in Guymon.

In fall, from Aug 1 – Oct 1 in Bartlesville to Sept 1 – Nov 15 in Shawnee.

USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.

Radishes planting dates by place in Oklahoma
PlaceSpringFall
AdaFeb 15 – May 1Aug 15 – Oct 15
AltusMar 1 – May 1Aug 15 – Oct 15
ArdmoreJan 1 – Apr 15Sept 1 – Nov 15Now
BartlesvilleMar 1 – May 1Aug 1 – Oct 1
BethanyFeb 15 – May 1Aug 15 – Oct 15
BixbyFeb 15 – May 1Aug 15 – Oct 15
Broken ArrowFeb 15 – May 1Aug 15 – Oct 15
ChickashaFeb 15 – May 1Aug 15 – Oct 15
ChoctawFeb 15 – May 1Sept 1 – Nov 15Now
ClaremoreMar 1 – May 1Aug 15 – Oct 15
CowetaFeb 15 – May 1Aug 15 – Oct 15
Del CityFeb 15 – May 1Sept 1 – Nov 15Now
DuncanJan 20 – May 1Sept 1 – Nov 15Now
DurantFeb 15 – May 1Sept 1 – Nov 15Now
EdmondMar 1 – May 1Aug 15 – Oct 15
El RenoMar 1 – May 1Aug 15 – Oct 15
Elk CityMar 1 – May 1Aug 15 – Oct 15
EnidMar 1 – May 1Aug 15 – Oct 15
GlenpoolFeb 15 – May 1Aug 15 – Oct 15
GuthrieFeb 15 – May 1Aug 15 – Oct 15
GuymonMar 10 – May 10Aug 1 – Oct 1
JenksFeb 15 – May 1Aug 15 – Oct 15
LawtonFeb 15 – May 1Sept 1 – Nov 15Now
McAlesterFeb 15 – May 1Aug 15 – Oct 15
MiamiMar 1 – May 1Aug 15 – Oct 15
Midwest CityFeb 15 – May 1Sept 1 – Nov 15Now
MooreFeb 15 – May 1Sept 1 – Nov 15Now
MuskogeeMar 1 – May 1Aug 15 – Oct 15
MustangFeb 15 – May 1Aug 15 – Oct 15
NewcastleFeb 15 – May 1Sept 1 – Nov 15Now
NormanFeb 15 – May 1Aug 15 – Oct 15
Oklahoma CityFeb 15 – May 1Aug 15 – Oct 15
OkmulgeeMar 1 – May 1Aug 15 – Oct 15
OwassoFeb 15 – May 1Aug 15 – Oct 15
Ponca CityMar 1 – May 1Aug 15 – Oct 15
Sand SpringsFeb 15 – May 1Aug 15 – Oct 15
SapulpaFeb 15 – May 1Aug 15 – Oct 15
ShawneeFeb 15 – May 1Sept 1 – Nov 15Now
StillwaterMar 1 – May 1Aug 15 – Oct 15
TahlequahFeb 15 – May 1Aug 15 – Oct 15
TulsaFeb 15 – May 1Aug 15 – Oct 15
Warr AcresFeb 15 – May 1Aug 15 – Oct 15
WeatherfordFeb 15 – May 1Aug 15 – Oct 15
WoodwardMar 1 – May 1Aug 15 – Oct 15
YukonFeb 15 – May 1Aug 15 – Oct 15

Planting dates: USDA Home and Garden Bulletin No. 9 (1967), tables 4 and 5. Frost dates: NOAA U.S. Climate Normals 1991–2020. “—” means the place's frost date is outside the table. The full USDA table for radishes.