When to plant Lettuce in Oklahoma

In spring, from Jan 15 – Apr 1 in Ardmore to Mar 20 – May 15 in Guymon.

In fall, from July 15 – Sept 1 in Bartlesville to Aug 25 – Oct 1 in Shawnee.

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

Leaf lettuce planting dates by place in Oklahoma
PlaceSpringFall
AdaFeb 15 – Apr 15Aug 15 – Oct 1
AltusMar 15 – May 15Aug 15 – Oct 1
ArdmoreJan 15 – Apr 1Aug 25 – Oct 1
BartlesvilleMar 15 – May 15July 15 – Sept 1
BethanyFeb 15 – Apr 15Aug 15 – Oct 1
BixbyFeb 15 – Apr 15Aug 15 – Oct 1
Broken ArrowFeb 15 – Apr 15Aug 15 – Oct 1
ChickashaFeb 15 – Apr 15Aug 15 – Oct 1
ChoctawFeb 15 – Apr 15Aug 25 – Oct 1
ClaremoreMar 15 – May 15Aug 15 – Oct 1
CowetaFeb 15 – Apr 15Aug 15 – Oct 1
Del CityFeb 15 – Apr 15Aug 25 – Oct 1
DuncanFeb 1 – Apr 1Aug 25 – Oct 1
DurantFeb 15 – Apr 15Aug 25 – Oct 1
EdmondMar 15 – May 15Aug 15 – Oct 1
El RenoMar 15 – May 15Aug 15 – Oct 1
Elk CityMar 15 – May 15Aug 15 – Oct 1
EnidMar 15 – May 15Aug 15 – Oct 1
GlenpoolFeb 15 – Apr 15Aug 15 – Oct 1
GuthrieFeb 15 – Apr 15Aug 15 – Oct 1
GuymonMar 20 – May 15July 15 – Sept 1
JenksFeb 15 – Apr 15Aug 15 – Oct 1
LawtonFeb 15 – Apr 15Aug 25 – Oct 1
McAlesterFeb 15 – Apr 15Aug 15 – Oct 1
MiamiMar 15 – May 15Aug 15 – Oct 1
Midwest CityFeb 15 – Apr 15Aug 25 – Oct 1
MooreFeb 15 – Apr 15Aug 25 – Oct 1
MuskogeeMar 15 – May 15Aug 15 – Oct 1
MustangFeb 15 – Apr 15Aug 15 – Oct 1
NewcastleFeb 15 – Apr 15Aug 25 – Oct 1
NormanFeb 15 – Apr 15Aug 15 – Oct 1
Oklahoma CityFeb 15 – Apr 15Aug 15 – Oct 1
OkmulgeeMar 15 – May 15Aug 15 – Oct 1
OwassoFeb 15 – Apr 15Aug 15 – Oct 1
Ponca CityMar 15 – May 15Aug 15 – Oct 1
Sand SpringsFeb 15 – Apr 15Aug 15 – Oct 1
SapulpaFeb 15 – Apr 15Aug 15 – Oct 1
ShawneeFeb 15 – Apr 15Aug 25 – Oct 1
StillwaterMar 15 – May 15Aug 15 – Oct 1
TahlequahFeb 15 – Apr 15Aug 15 – Oct 1
TulsaFeb 15 – Apr 15Aug 15 – Oct 1
Warr AcresFeb 15 – Apr 15Aug 15 – Oct 1
WeatherfordFeb 15 – Apr 15Aug 15 – Oct 1
WoodwardMar 15 – May 15Aug 15 – Oct 1
YukonFeb 15 – Apr 15Aug 15 – Oct 1

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 leaf lettuce.