When to plant Spinach in Oklahoma
In spring, from Jan 15 – Mar 10 in Ardmore to Mar 1 – Apr 15 in Guymon.
In fall, from Aug 20 – Sept 10 in Bartlesville to Sept 15 – Nov 1 in Shawnee.
USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Ada | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Altus | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Ardmore | Jan 15 – Mar 10 | Sept 15 – Nov 1Now |
| Bartlesville | Feb 15 – Apr 1 | Aug 20 – Sept 10 |
| Bethany | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Bixby | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Broken Arrow | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Chickasha | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Choctaw | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Claremore | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Coweta | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Del City | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Duncan | Jan 15 – Mar 15 | Sept 15 – Nov 1Now |
| Durant | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Edmond | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| El Reno | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Elk City | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Enid | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Glenpool | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Guthrie | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Guymon | Mar 1 – Apr 15 | Aug 20 – Sept 10 |
| Jenks | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Lawton | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| McAlester | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Miami | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Midwest City | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Moore | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Muskogee | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Mustang | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Newcastle | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Norman | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Oklahoma City | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Okmulgee | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Owasso | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Ponca City | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Sand Springs | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Sapulpa | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Shawnee | Feb 1 – Mar 20 | Sept 15 – Nov 1Now |
| Stillwater | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Tahlequah | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Tulsa | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Warr Acres | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Weatherford | Feb 1 – Mar 20 | Sept 1 – Oct 1 |
| Woodward | Feb 15 – Apr 1 | Sept 1 – Oct 1 |
| Yukon | Feb 1 – Mar 20 | Sept 1 – 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 spinach.