When to plant sweet potato in Oklahoma
Oklahoma spans USDA zones 6b–8a, so the right time to plant sweet potato shifts by weeks across the state. The window to transplant seedlings outdoors runs from about April 5 in Ardmore to May 9 in Guymon — below are local dates for 45 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Oklahoma City | 7b | April 4 | November 2 | April 25 – May 9 |
| Tulsa | 7b | March 31 | November 4 | April 21 – May 5 |
| Norman | 7b | April 3 | November 3 | April 24 – May 8 |
| Broken Arrow | 7b | April 1 | November 1 | April 22 – May 6 |
| Edmond | 7b | April 10 | October 28 | May 1 – May 15 |
| Lawton | 7b | March 26 | November 7 | April 16 – April 30 |
| Moore | 7b | March 31 | November 5 | April 21 – May 5 |
| Midwest City | 7b | April 2 | November 5 | April 23 – May 7 |
Sweet Potato in Oklahoma: FAQ
When can I plant sweet potato in Oklahoma?
Across Oklahoma, the time to transplant sweet potato spans roughly April 5 in Ardmore to May 9 in Guymon, each following that city's local frost dates.
Does the sweet potato planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 cities with their own frost dates, so the right sweet potato planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
How long does sweet potato take to grow in Oklahoma?
Sweet Potato takes about 90–120 days to reach harvest once planted — check that this fits inside your city's frost-free season on its place page.
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