When to plant rhubarb in Oklahoma
Oklahoma spans USDA zones 6b–8a, so the right time to plant rhubarb shifts by weeks across the state. The window to transplant seedlings 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 | Transplant out |
|---|---|---|---|---|
| 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 |
Rhubarb in Oklahoma: FAQ
When can I plant rhubarb in Oklahoma?
Across Oklahoma, the time to transplant rhubarb spans roughly February 1 in Ardmore to March 7 in Guymon, each following that city's local frost dates.
Does the rhubarb planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 cities with their own frost dates, so the right rhubarb planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
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