When to plant yardlong bean in Oklahoma
Oklahoma spans USDA zones 6b–8a, so the right time to plant yardlong bean shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 29 in Ardmore to May 2 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 18 – April 25 |
| Tulsa | 7b | March 31 | November 4 | April 14 – April 21 |
| Norman | 7b | April 3 | November 3 | April 17 – April 24 |
| Broken Arrow | 7b | April 1 | November 1 | April 15 – April 22 |
| Edmond | 7b | April 10 | October 28 | April 24 – May 1 |
| Lawton | 7b | March 26 | November 7 | April 9 – April 16 |
| Moore | 7b | March 31 | November 5 | April 14 – April 21 |
| Midwest City | 7b | April 2 | November 5 | April 16 – April 23 |
Yardlong Bean in Oklahoma: FAQ
When can I plant yardlong bean in Oklahoma?
Across Oklahoma, the time to transplant yardlong bean spans roughly March 29 in Ardmore to May 2 in Guymon, each following that city's local frost dates.
Does the yardlong bean planting date vary across Oklahoma?
Yes. Oklahoma publishes 45 cities with their own frost dates, so the right yardlong bean 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 yardlong bean take to grow in Oklahoma?
Yardlong Bean takes about 70–90 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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