When to plant borage in Oklahoma
Oklahoma spans USDA zones 6b–8a, so the right time to plant borage shifts by weeks across the state. The window to sow seed directly outdoors runs from about March 15 in Ardmore to April 18 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 4 – April 18 |
| Tulsa | 7b | March 31 | November 4 | March 31 – April 14 |
| Norman | 7b | April 3 | November 3 | April 3 – April 17 |
| Broken Arrow | 7b | April 1 | November 1 | April 1 – April 15 |
| Edmond | 7b | April 10 | October 28 | April 10 – April 24 |
| Lawton | 7b | March 26 | November 7 | March 26 – April 9 |
| Moore | 7b | March 31 | November 5 | March 31 – April 14 |
| Midwest City | 7b | April 2 | November 5 | April 2 – April 16 |
Borage in Oklahoma: FAQ
When can I plant borage in Oklahoma?
Across Oklahoma, the time to direct-sow borage spans roughly March 15 in Ardmore to April 18 in Guymon, each following that city's local frost dates.
Does the borage planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 cities with their own frost dates, so the right borage 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 borage take to grow in Oklahoma?
Borage takes about 50–60 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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