When to Plant Sweet Corn in Oklahoma
In Oklahoma, the time to sow sweet corn outside runs from Mar 22 – Apr 5 in Ardmore to Apr 25 – May 9 in Guymon. In Oklahoma City, it's Apr 11 – Apr 25. The average last spring frost differs by about 5 weeks across the state (Mar 15 in Ardmore, Apr 18 in Guymon), so use the dates for the town nearest you.
Sow corn in blocks rather than single rows so it pollinates well. Wait for soil around 60°F.
- Sow outside: 1–3 weeks after the last frost.
Sweet Corn planting dates in Oklahoma by city
| City | Zone | Sow outside |
|---|---|---|
| Ada | 7b | Apr 9 – Apr 23 |
| Altus | 7b | Apr 12 – Apr 26 |
| Ardmore | 8a | Mar 22 – Apr 5 |
| Bartlesville | 7a | Apr 18 – May 2 |
| Bethany | 7b | Apr 9 – Apr 23 |
| Bixby | 7b | Apr 8 – Apr 22 |
| Broken Arrow | 7b | Apr 8 – Apr 22 |
| Chickasha | 7b | Apr 11 – Apr 25 |
| Choctaw | 7b | Apr 9 – Apr 23 |
| Claremore | 7a | Apr 14 – Apr 28 |
| Del City | 7b | Apr 9 – Apr 23 |
| Duncan | 8a | Apr 1 – Apr 15 |
| Durant | 8a | Apr 7 – Apr 21 |
| Edmond | 7b | Apr 17 – May 1 |
| El Reno | 7b | Apr 13 – Apr 27 |
| Enid | 7a | Apr 13 – Apr 27 |
| Glenpool | 7b | Apr 6 – Apr 20 |
| Guymon | 6b | Apr 25 – May 9 |
| Jenks | 7b | Apr 6 – Apr 20 |
| Lawton | 7b | Apr 2 – Apr 16 |
| McAlester | 7b | Apr 7 – Apr 21 |
| Miami | 7a | Apr 13 – Apr 27 |
| Midwest City | 7b | Apr 9 – Apr 23 |
| Moore | 7b | Apr 7 – Apr 21 |
| Muskogee | 7b | Apr 14 – Apr 28 |
| Mustang | 7b | Apr 11 – Apr 25 |
| Newcastle | 7b | Apr 7 – Apr 21 |
| Norman | 7b | Apr 10 – Apr 24 |
| Oklahoma City | 7b | Apr 11 – Apr 25 |
| Owasso | 7b | Apr 7 – Apr 21 |
| Ponca City | 7a | Apr 17 – May 1 |
| Sand Springs | 7b | Apr 6 – Apr 20 |
| Sapulpa | 7b | Apr 6 – Apr 20 |
| Shawnee | 7b | Apr 6 – Apr 20 |
| Stillwater | 7a | Apr 12 – Apr 26 |
| Tahlequah | 7b | Apr 11 – Apr 25 |
| Tulsa | 7b | Apr 7 – Apr 21 |
| Weatherford | 7b | Apr 10 – Apr 24 |
| Woodward | 7a | Apr 12 – Apr 26 |
| Yukon | 7b | Apr 9 – Apr 23 |
Calculated from each town's average (50%) frost dates, from the nearest NOAA station (1991–2020). Typical dates for the 2027 planting season, based on NOAA's 1991–2020 averages. They are long-term odds, not a forecast: always check your local forecast before planting. Zones: 2023 USDA Plant Hardiness Zone Map (USDA-ARS and Oregon State University). Not the official map; see planthardiness.ars.usda.gov.
See all frost dates in Oklahoma, or the general guide to when to plant sweet corn.
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