When to plant endive in Colorado
Colorado spans USDA zones 5b–7a, so the right time to plant endive shifts by weeks across the state. The window to transplant seedlings outdoors runs from about March 24 in Grand Junction to May 31 in Edwards — below are local dates for 70 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Denver | 6a | May 4 | October 8 | April 13 – May 4 |
| Colorado Springs | 6a | May 3 | October 8 | April 12 – May 3 |
| Aurora | 6a | May 7 | October 8 | April 16 – May 7 |
| Fort Collins | 5b | May 2 | October 7 | April 11 – May 2 |
| Lakewood | 6a | May 3 | October 7 | April 12 – May 3 |
| Thornton | 6a | May 2 | October 11 | April 11 – May 2 |
| Arvada | 6a | May 5 | October 5 | April 14 – May 5 |
| Westminster | 6a | May 2 | October 11 | April 11 – May 2 |
Endive in Colorado: FAQ
When can I plant endive in Colorado?
Across Colorado, the time to transplant endive spans roughly March 24 in Grand Junction to May 31 in Edwards, each following that city's local frost dates.
Does the endive planting date vary across Colorado?
Yes. Colorado publishes 70 cities with their own frost dates, so the right endive 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 endive take to grow in Colorado?
Endive takes about 85–100 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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