When to plant purslane in Oklahoma
Oklahoma spans USDA zones 6b–8a, so the right time to plant purslane shifts by weeks across the state. The window to sow seed directly 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 | Direct sow |
|---|---|---|---|---|
| Oklahoma City | 7b | April 4 | November 2 | April 11 – April 25 |
| Tulsa | 7b | March 31 | November 4 | April 7 – April 21 |
| Norman | 7b | April 3 | November 3 | April 10 – April 24 |
| Broken Arrow | 7b | April 1 | November 1 | April 8 – April 22 |
| Edmond | 7b | April 10 | October 28 | April 17 – May 1 |
| Lawton | 7b | March 26 | November 7 | April 2 – April 16 |
| Moore | 7b | March 31 | November 5 | April 7 – April 21 |
| Midwest City | 7b | April 2 | November 5 | April 9 – April 23 |
Purslane in Oklahoma: FAQ
When can I plant purslane in Oklahoma?
Across Oklahoma, the time to direct-sow purslane spans roughly March 22 in Ardmore to April 25 in Guymon, each following that city's local frost dates.
Does the purslane planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 cities with their own frost dates, so the right purslane 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 purslane take to grow in Oklahoma?
Purslane 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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