When to plant lemongrass in Colorado
Colorado spans USDA zones 5b–7a, so the right time to plant lemongrass shifts by weeks across the state. The window to transplant seedlings 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 | Transplant out |
|---|---|---|---|---|
| Denver | 6a | May 4 | October 8 | May 18 – May 25 |
| Colorado Springs | 6a | May 3 | October 8 | May 17 – May 24 |
| Aurora | 6a | May 7 | October 8 | May 21 – May 28 |
| Fort Collins | 5b | May 2 | October 7 | May 16 – May 23 |
| Lakewood | 6a | May 3 | October 7 | May 17 – May 24 |
| Thornton | 6a | May 2 | October 11 | May 16 – May 23 |
| Arvada | 6a | May 5 | October 5 | May 19 – May 26 |
| Westminster | 6a | May 2 | October 11 | May 16 – May 23 |
Lemongrass in Colorado: FAQ
When can I plant lemongrass in Colorado?
Across Colorado, the time to transplant lemongrass spans roughly April 28 in Grand Junction to July 5 in Edwards, each following that city's local frost dates.
Does the lemongrass planting date vary across Colorado?
Yes. Colorado publishes 70 cities with their own frost dates, so the right lemongrass planting window shifts by weeks between the warmest and coldest parts of the state — use your city's page for the exact dates.
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