When to plant cowpea (southern pea) in Colorado
Colorado spans USDA zones 5b–7a, so the right time to plant cowpea (southern pea) shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 28 in Grand Junction to July 5 in Edwards — below are local dates for 70 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Direct sow |
|---|---|---|---|---|
| Denver | 6a | May 4 | October 8 | May 18 – June 1 |
| Colorado Springs | 6a | May 3 | October 8 | May 17 – May 31 |
| Aurora | 6a | May 7 | October 8 | May 21 – June 4 |
| Fort Collins | 5b | May 2 | October 7 | May 16 – May 30 |
| Lakewood | 6a | May 3 | October 7 | May 17 – May 31 |
| Thornton | 6a | May 2 | October 11 | May 16 – May 30 |
| Arvada | 6a | May 5 | October 5 | May 19 – June 2 |
| Westminster | 6a | May 2 | October 11 | May 16 – May 30 |
Cowpea (Southern Pea) in Colorado: FAQ
When can I plant cowpea (southern pea) in Colorado?
Across Colorado, the time to direct-sow cowpea (southern pea) spans roughly April 28 in Grand Junction to July 5 in Edwards, each following that city's local frost dates.
Does the cowpea (southern pea) planting date vary across Colorado?
Yes. Colorado publishes 70 cities with their own frost dates, so the right cowpea (southern pea) 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 cowpea (southern pea) take to grow in Colorado?
Cowpea (Southern Pea) takes about 60–90 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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