When to Plant Tomatoes in Utah
In Utah, the time to transplant tomatoes outside runs from Mar 21 – Apr 4 in St. George to Jun 9 – Jun 23 in Eagle Mountain. In Salt Lake City, it's Apr 7 – Apr 21. The average last spring frost differs by about 11 weeks across the state (Mar 14 in St. George, Jun 2 in Eagle Mountain), so use the dates for the town nearest you.
Tomatoes are killed by frost and sulk in cold soil. Wait until nights stay above 50°F, usually one to three weeks after the average last frost.
- Start indoors: 6–8 weeks before the last frost.
- Transplant outside: 1–3 weeks after the last frost.
Tomatoes planting dates in Utah by city
| City | Zone | Start indoors | Transplant outside |
|---|---|---|---|
| American Fork | 7a | Feb 20 – Mar 6 | Apr 24 – May 8 |
| Bountiful | 6b | Feb 28 – Mar 14 | May 2 – May 16 |
| Cedar City | 6b | Mar 9 – Mar 23 | May 11 – May 25 |
| Clearfield | 7a | Mar 4 – Mar 18 | May 6 – May 20 |
| Cottonwood Heights | 7b | Mar 4 – Mar 18 | May 6 – May 20 |
| Draper | 7a | Feb 21 – Mar 7 | Apr 25 – May 9 |
| Eagle Mountain | 6b | Apr 7 – Apr 21 | Jun 9 – Jun 23 |
| Farmington | 7b | Feb 22 – Mar 8 | Apr 26 – May 10 |
| Herriman | 7a | Feb 21 – Mar 7 | Apr 25 – May 9 |
| Holladay | 7b | Mar 4 – Mar 18 | May 6 – May 20 |
| Hurricane | 8b | Feb 4 – Feb 18 | Apr 8 – Apr 22 |
| Kaysville | 7b | Feb 22 – Mar 8 | Apr 26 – May 10 |
| Kearns metro township | 7b | Feb 11 – Feb 25 | Apr 15 – Apr 29 |
| Layton | 7a | Mar 4 – Mar 18 | May 6 – May 20 |
| Lehi | 7a | Mar 5 – Mar 19 | May 7 – May 21 |
| Logan | 6a | Mar 13 – Mar 27 | May 15 – May 29 |
| Magna metro township | 7b | Feb 6 – Feb 20 | Apr 10 – Apr 24 |
| Midvale | 7b | Mar 4 – Mar 18 | May 6 – May 20 |
| Millcreek | 7b | Feb 28 – Mar 14 | May 2 – May 16 |
| Murray | 7b | Mar 4 – Mar 18 | May 6 – May 20 |
| Ogden | 6b | Feb 24 – Mar 10 | Apr 28 – May 12 |
| Orem | 7a | Feb 22 – Mar 8 | Apr 26 – May 10 |
| Pleasant Grove | 7a | Feb 20 – Mar 6 | Apr 24 – May 8 |
| Provo | 7a | Feb 21 – Mar 7 | Apr 25 – May 9 |
| Riverton | 7a | Feb 21 – Mar 7 | Apr 25 – May 9 |
| Roy | 7a | Feb 25 – Mar 11 | Apr 29 – May 13 |
| Salt Lake City | 7b | Feb 3 – Feb 17 | Apr 7 – Apr 21 |
| Sandy | 7b | Mar 4 – Mar 18 | May 6 – May 20 |
| Saratoga Springs | 7a | Mar 5 – Mar 19 | May 7 – May 21 |
| South Jordan | 7a | Feb 21 – Mar 7 | Apr 25 – May 9 |
| South Salt Lake | 7b | Feb 3 – Feb 17 | Apr 7 – Apr 21 |
| Spanish Fork | 7a | Feb 28 – Mar 14 | May 2 – May 16 |
| Springville | 7a | Feb 21 – Mar 7 | Apr 25 – May 9 |
| St. George | 8b | Jan 17 – Jan 31 | Mar 21 – Apr 4 |
| Syracuse | 7b | Feb 25 – Mar 11 | Apr 29 – May 13 |
| Taylorsville | 7b | Feb 3 – Feb 17 | Apr 7 – Apr 21 |
| Tooele | 7a | Mar 7 – Mar 21 | May 9 – May 23 |
| Washington | 8b | Jan 17 – Jan 31 | Mar 21 – Apr 4 |
| West Jordan | 7b | Feb 21 – Mar 7 | Apr 25 – May 9 |
| West Valley City | 7b | Feb 11 – Feb 25 | Apr 15 – Apr 29 |
Calculated from each town's average (50%) frost dates, from the nearest NOAA station (1991–2020). Typical dates for the 2027 planting season, based on NOAA's 1991–2020 averages. They are long-term odds, not a forecast: always check your local forecast before planting. Zones: 2023 USDA Plant Hardiness Zone Map (USDA-ARS and Oregon State University). Not the official map; see planthardiness.ars.usda.gov.
See all frost dates in Utah, or the general guide to when to plant tomatoes.
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