When to plant onion in Nevada
Nevada spans USDA zones 5b–9b, so the right time to plant onion shifts by weeks across the state. The window to transplant seedlings outdoors runs from about December 23 in Henderson to May 9 in Spring Creek — below are local dates for 24 cities, each computed from its own frost dates.
| City | Zone | Last frost | First frost | Transplant out |
|---|---|---|---|---|
| Las Vegas | 9a | January 24 | December 10 | December 27 – January 10 |
| Henderson | 9b | January 20 | December 15 | December 23 – January 6 |
| North Las Vegas | 9a | February 1 | December 8 | January 4 – January 18 |
| Reno | 7b | April 28 | October 27 | March 31 – April 14 |
| Enterprise | 9a | February 4 | December 5 | January 7 – January 21 |
| Spring Valley | 9a | February 4 | December 5 | January 7 – January 21 |
| Sunrise Manor | 9b | February 1 | December 8 | January 4 – January 18 |
| Paradise | 9b | January 20 | December 15 | December 23 – January 6 |
Onion in Nevada: FAQ
When can I plant onion in Nevada?
Across Nevada, the time to transplant onion spans roughly December 23 in Henderson to May 9 in Spring Creek, each following that city's local frost dates.
Does the onion planting date vary across Nevada?
Yes. Nevada publishes 24 cities with their own frost dates, so the right onion 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 onion take to grow in Nevada?
Onion takes about 90–110 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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