Midvale, UT planting zone & frost dates
Midvale is in USDA hardiness zone 7b. The last spring frost usually comes around April 29 and the first fall frost around October 22, for a growing season of about 174 days.
Planting calendar for Midvale
Dates are counted from the average last spring frost (April 29) using the typical timing recommended by U.S. extension services. Warm-season crops go out only after the danger of frost has passed and the soil has warmed.
| Crop | When |
|---|---|
| Tomatoes | Start seeds indoors: Mar 4 – Mar 18 Transplant outdoors: May 6 – May 13 |
| Peppers | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: May 13 – May 20 |
| Eggplant | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: May 13 – May 20 |
| Broccoli | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: Apr 1 – Apr 15 |
| Cabbage | Start seeds indoors: Feb 18 – Mar 4 Transplant outdoors: Apr 1 – Apr 15 |
| Onions (sets) | Plant outdoors: Apr 1 – Apr 15 |
| Peas | Sow outdoors: Mar 18 – Apr 1 |
| Spinach | Sow outdoors: Mar 18 – Apr 1 |
| Lettuce | Sow outdoors: Apr 1 – Apr 15 |
| Carrots | Sow outdoors: Apr 1 – Apr 15 |
| Potatoes | Plant outdoors: Apr 1 – Apr 15 |
| Beans | Sow outdoors: May 6 – May 13 |
| Sweet corn | Sow outdoors: May 6 – May 13 |
| Cucumbers | Sow outdoors: May 6 – May 13 |
| Squash & zucchini | Sow outdoors: May 6 – May 13 |
| Basil | Start seeds indoors: Mar 18 – Apr 1 Transplant outdoors: May 6 – May 13 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 27 (8 weeks before the average first fall frost on Oct 22).
Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Apr 10 | Apr 29 | May 30 |
| First 32°F frost in fall is before | Nov 7 | Oct 22 | Oct 6 |
How to read it: in spring there is a 10% chance of a frost after May 30, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 6. A hard freeze (28°F) usually ends around April 12.
Hardiness zone by ZIP code in Midvale
- 84047 zone 7b
Nearby cities
- Sandy zone 7b, last frost Apr 29
- West Jordan zone 7b, last frost Apr 29
- Murray zone 7b, last frost Apr 25
- South Jordan zone 7a, last frost Apr 18
- Taylorsville zone 7b, last frost Mar 31
- Millcreek zone 7b, last frost Apr 25
- Cottonwood Heights zone 7b, last frost Apr 29
- Draper zone 7a, last frost Apr 18
Questions
What growing zone is Midvale, UT?
Midvale is in USDA Plant Hardiness Zone 7b (average extreme winter low 5°F to 10°F), according to the USDA 2023 map.
When is the last frost in Midvale?
The average last spring frost (32°F) in Midvale is April 29. There is still a 10% chance of frost until May 30.
When can I plant tomatoes in Midvale?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around May 6 – May 13. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Cottonwood Weir, UT (USC00421759), 9.9 km (6.1 mi) from the city center, elevation 1520 m, based on 26 years of records. Hardiness zone: USDA Plant Hardiness Zone Map 2023 for the ZIP code nearest to the city center. Microclimates (valleys, hills, cities, coasts) can be warmer or colder: check the local forecast before planting. How we calculate the data.