FrostCal

When to Plant Spinach in Oklahoma

In a typical Oklahoma location, sow outdoors Feb 19 – Mar 5. Across the state, the outdoor planting window starts as early as Feb 1 in Ardmore and as late as Mar 7 in Guymon. For a fall crop, plant around Sep 8 – Sep 22.

Method Direct sow
Days to maturity 40–50 days

Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Spinach Planting Dates by City

CityDirect sowFall planting
Oklahoma CityFeb 21 – Mar 7Sep 7 – Sep 21
TulsaFeb 17 – Mar 3Sep 9 – Sep 23
NormanFeb 17 – Mar 3Sep 10 – Sep 24
Broken ArrowFeb 18 – Mar 4Sep 6 – Sep 20
LawtonFeb 18 – Mar 4Sep 10 – Sep 24
EdmondFeb 19 – Mar 5Sep 10 – Sep 24
MooreFeb 21 – Mar 7Sep 7 – Sep 21
Midwest CityFeb 19 – Mar 5Sep 10 – Sep 24
EnidFeb 23 – Mar 9Sep 6 – Sep 20
StillwaterFeb 22 – Mar 8Sep 4 – Sep 18
MuskogeeFeb 24 – Mar 10Sep 4 – Sep 18
BartlesvilleFeb 28 – Mar 14Aug 29 – Sep 12
OwassoFeb 17 – Mar 3Sep 9 – Sep 23
ShawneeFeb 16 – Mar 2Sep 10 – Sep 24
YukonFeb 19 – Mar 5Sep 9 – Sep 23
ArdmoreFeb 1 – Feb 15Sep 19 – Oct 3
Ponca CityFeb 27 – Mar 13Sep 1 – Sep 15
BixbyFeb 18 – Mar 4Sep 6 – Sep 20
DuncanFeb 11 – Feb 25Sep 12 – Sep 26
Del CityFeb 19 – Mar 5Sep 10 – Sep 24
JenksFeb 16 – Mar 2Sep 9 – Sep 23
SapulpaFeb 16 – Mar 2Sep 9 – Sep 23
MustangFeb 21 – Mar 7Sep 7 – Sep 21
Sand SpringsFeb 16 – Mar 2Sep 9 – Sep 23
BethanyFeb 19 – Mar 5Sep 9 – Sep 23
AltusFeb 22 – Mar 8Sep 7 – Sep 21
ClaremoreFeb 24 – Mar 10Sep 4 – Sep 18
El RenoFeb 23 – Mar 9Sep 5 – Sep 19
McAlesterFeb 17 – Mar 3Sep 8 – Sep 22
AdaFeb 19 – Mar 5Sep 9 – Sep 23

Showing the 30 most populous of 48 Oklahoma cities. Dates are estimates from each city's NOAA frost normals and university extension timing guidelines. See all Oklahoma cities.

Frequently Asked Questions

When should I plant spinach in Oklahoma?

In a typical Oklahoma location, sow outdoors Feb 19 – Mar 5. Across the state, the outdoor planting window starts as early as Feb 1 in Ardmore and as late as Mar 7 in Guymon. For a fall crop, plant around Sep 8 – Sep 22.

When is the last frost in Oklahoma?

The average last spring frost in Oklahoma ranges from March 15 in Ardmore to April 18 in Guymon, based on NOAA 1991–2020 climate normals.

How long do spinach take to grow?

Spinach typically take 40–50 days from planting to harvest. Very cold-hardy; direct sow 4-6 weeks before last frost as soon as soil can be worked.

Other Crops in Oklahoma

When to plant spinach in other states

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