When to plant Collard greens in Oklahoma
In spring, from Feb 1 – Apr 1 in Ardmore to Mar 10 – June 1 in Guymon.
In fall, from July 15 – Aug 15 in Bartlesville to Aug 15 – Oct 1 in Shawnee.
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 | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Altus | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Ardmore | Feb 1 – Apr 1 | Aug 15 – Oct 1 |
| Bartlesville | Mar 1 – June 1 | July 15 – Aug 15 |
| Bethany | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Bixby | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Broken Arrow | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Chickasha | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Choctaw | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Claremore | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Coweta | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Del City | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Duncan | Feb 15 – May 1 | Aug 15 – Oct 1 |
| Durant | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Edmond | Mar 1 – June 1 | Aug 1 – Sept 15 |
| El Reno | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Elk City | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Enid | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Glenpool | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Guthrie | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Guymon | Mar 10 – June 1 | July 15 – Aug 15 |
| Jenks | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Lawton | Mar 1 – June 1 | Aug 15 – Oct 1 |
| McAlester | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Miami | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Midwest City | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Moore | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Muskogee | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Mustang | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Newcastle | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Norman | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Oklahoma City | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Okmulgee | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Owasso | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Ponca City | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Sand Springs | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Sapulpa | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Shawnee | Mar 1 – June 1 | Aug 15 – Oct 1 |
| Stillwater | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Tahlequah | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Tulsa | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Warr Acres | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Weatherford | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Woodward | Mar 1 – June 1 | Aug 1 – Sept 15 |
| Yukon | Mar 1 – June 1 | Aug 1 – Sept 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 collards.