When to plant bush bean in Colorado
Colorado spans USDA zones 5b–7a, so the right time to plant bush bean shifts by weeks across the state. The window to sow seed directly outdoors runs from about April 21 in Grand Junction to June 28 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 11 – June 15 |
| Colorado Springs | 6a | May 3 | October 8 | May 10 – June 14 |
| Aurora | 6a | May 7 | October 8 | May 14 – June 18 |
| Fort Collins | 5b | May 2 | October 7 | May 9 – June 13 |
| Lakewood | 6a | May 3 | October 7 | May 10 – June 14 |
| Thornton | 6a | May 2 | October 11 | May 9 – June 13 |
| Arvada | 6a | May 5 | October 5 | May 12 – June 16 |
| Westminster | 6a | May 2 | October 11 | May 9 – June 13 |
Bush Bean in Colorado: FAQ
When can I plant bush bean in Colorado?
Across Colorado, the time to direct-sow bush bean spans roughly April 21 in Grand Junction to June 28 in Edwards, each following that city's local frost dates.
Does the bush bean planting date vary across Colorado?
Yes. Colorado publishes 70 cities with their own frost dates, so the right bush 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 bush bean take to grow in Colorado?
Bush Bean 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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