When to plant spinach in Oklahoma
Oklahoma spans USDA zones 6b–8a, so the right time to plant spinach shifts by weeks across the state. The window to sow seed directly outdoors runs from about February 1 in Ardmore to March 7 in Guymon — below are local dates for 45 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Oklahoma City | 7b | April 4 | November 2 | February 21 – March 21 |
| Tulsa | 7b | March 31 | November 4 | February 17 – March 17 |
| Norman | 7b | April 3 | November 3 | February 20 – March 20 |
| Broken Arrow | 7b | April 1 | November 1 | February 18 – March 18 |
| Edmond | 7b | April 10 | October 28 | February 27 – March 27 |
| Lawton | 7b | March 26 | November 7 | February 12 – March 12 |
| Moore | 7b | March 31 | November 5 | February 17 – March 17 |
| Midwest City | 7b | April 2 | November 5 | February 19 – March 19 |
Spinach in Oklahoma: FAQ
When can I plant spinach in Oklahoma?
Across Oklahoma, the time to direct-sow spinach spans roughly February 1 in Ardmore to March 7 in Guymon, each following that city's local frost dates.
Does the spinach planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 cities with their own frost dates, so the right spinach 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 spinach take to grow in Oklahoma?
Spinach takes about 40–50 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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