When to plant Onions in Oklahoma
In spring, from Jan 15 – Feb 15 in Ardmore to Mar 15 – Apr 10 in Guymon.
In fall, Sept 1 – Oct 15.
Dates are for setting out plants. USDA's earliest safe spring and latest safe fall planting dates, matched to each place's average frost dates.
| Place | Spring | Fall |
|---|---|---|
| Ada | Feb 15 – Mar 15 | Not listed |
| Altus | Mar 1 – Apr 1 | Not listed |
| Ardmore | Jan 15 – Feb 15 | Sept 1 – Oct 15 |
| Bartlesville | Mar 1 – Apr 1 | Spring-planted |
| Bethany | Feb 15 – Mar 15 | Not listed |
| Bixby | Feb 15 – Mar 15 | Not listed |
| Broken Arrow | Feb 15 – Mar 15 | Not listed |
| Chickasha | Feb 15 – Mar 15 | Not listed |
| Choctaw | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Claremore | Mar 1 – Apr 1 | Not listed |
| Coweta | Feb 15 – Mar 15 | Not listed |
| Del City | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Duncan | Feb 10 – Mar 10 | Sept 1 – Oct 15 |
| Durant | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Edmond | Mar 1 – Apr 1 | Not listed |
| El Reno | Mar 1 – Apr 1 | Not listed |
| Elk City | Mar 1 – Apr 1 | Not listed |
| Enid | Mar 1 – Apr 1 | Not listed |
| Glenpool | Feb 15 – Mar 15 | Not listed |
| Guthrie | Feb 15 – Mar 15 | Not listed |
| Guymon | Mar 15 – Apr 10 | Spring-planted |
| Jenks | Feb 15 – Mar 15 | Not listed |
| Lawton | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| McAlester | Feb 15 – Mar 15 | Not listed |
| Miami | Mar 1 – Apr 1 | Not listed |
| Midwest City | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Moore | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Muskogee | Mar 1 – Apr 1 | Not listed |
| Mustang | Feb 15 – Mar 15 | Not listed |
| Newcastle | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Norman | Feb 15 – Mar 15 | Not listed |
| Oklahoma City | Feb 15 – Mar 15 | Not listed |
| Okmulgee | Mar 1 – Apr 1 | Not listed |
| Owasso | Feb 15 – Mar 15 | Not listed |
| Ponca City | Mar 1 – Apr 1 | Not listed |
| Sand Springs | Feb 15 – Mar 15 | Not listed |
| Sapulpa | Feb 15 – Mar 15 | Not listed |
| Shawnee | Feb 15 – Mar 15 | Sept 1 – Oct 15 |
| Stillwater | Mar 1 – Apr 1 | Not listed |
| Tahlequah | Feb 15 – Mar 15 | Not listed |
| Tulsa | Feb 15 – Mar 15 | Not listed |
| Warr Acres | Feb 15 – Mar 15 | Not listed |
| Weatherford | Feb 15 – Mar 15 | Not listed |
| Woodward | Mar 1 – Apr 1 | Not listed |
| Yukon | Feb 15 – Mar 15 | Not listed |
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 onion plants.