When to plant watermelon in Oklahoma
Oklahoma spans USDA zones 6b–8a, so the right time to plant watermelon shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 22 in Ardmore to April 25 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 11 – April 18 |
| Tulsa | 7b | March 31 | November 4 | April 7 – April 14 |
| Norman | 7b | April 3 | November 3 | April 10 – April 17 |
| Broken Arrow | 7b | April 1 | November 1 | April 8 – April 15 |
| Edmond | 7b | April 10 | October 28 | April 17 – April 24 |
| Lawton | 7b | March 26 | November 7 | April 2 – April 9 |
| Moore | 7b | March 31 | November 5 | April 7 – April 14 |
| Midwest City | 7b | April 2 | November 5 | April 9 – April 16 |
Watermelon in Oklahoma: FAQ
When can I plant watermelon in Oklahoma?
Across Oklahoma, the time to transplant watermelon spans roughly March 22 in Ardmore to April 25 in Guymon, each following that city's local frost dates.
Does the watermelon planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 cities with their own frost dates, so the right watermelon 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 watermelon take to grow in Oklahoma?
Watermelon takes about 75–95 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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