Provo, UT planting zone & frost dates
Provo is in USDA hardiness zone 7a. The last spring frost usually comes around April 18 and the first fall frost around October 21, for a growing season of about 185 days.
Planting calendar for Provo
Dates are counted from the average last spring frost (April 18) 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: Feb 21 – Mar 7 Transplant outdoors: Apr 25 – May 2 |
| Peppers | Start seeds indoors: Feb 7 – Feb 21 Transplant outdoors: May 2 – May 9 |
| Eggplant | Start seeds indoors: Feb 7 – Feb 21 Transplant outdoors: May 2 – May 9 |
| Broccoli | Start seeds indoors: Feb 7 – Feb 21 Transplant outdoors: Mar 21 – Apr 4 |
| Cabbage | Start seeds indoors: Feb 7 – Feb 21 Transplant outdoors: Mar 21 – Apr 4 |
| Onions (sets) | Plant outdoors: Mar 21 – Apr 4 |
| Peas | Sow outdoors: Mar 7 – Mar 21 |
| Spinach | Sow outdoors: Mar 7 – Mar 21 |
| Lettuce | Sow outdoors: Mar 21 – Apr 4 |
| Carrots | Sow outdoors: Mar 21 – Apr 4 |
| Potatoes | Plant outdoors: Mar 21 – Apr 4 |
| Beans | Sow outdoors: Apr 25 – May 2 |
| Sweet corn | Sow outdoors: Apr 25 – May 2 |
| Cucumbers | Sow outdoors: Apr 25 – May 2 |
| Squash & zucchini | Sow outdoors: Apr 25 – May 2 |
| Basil | Start seeds indoors: Mar 7 – Mar 21 Transplant outdoors: Apr 25 – May 2 |
Fall garden: cool-season crops like lettuce, spinach and kale can be sown again around Aug 26 (8 weeks before the average first fall frost on Oct 21).
Frost risk in detail
| 90% chance | 50% chance | 10% chance | |
|---|---|---|---|
| Last 32°F frost in spring is after | Mar 31 | Apr 18 | May 5 |
| First 32°F frost in fall is before | Nov 4 | Oct 21 | Oct 7 |
How to read it: in spring there is a 10% chance of a frost after May 5, so that is a safe date for tender plants. In fall there is a 10% chance of frost before October 7. A hard freeze (28°F) usually ends around March 31.
Hardiness zone by ZIP code in Provo
- 84601 zone 7a
- 84603 zone 7a
- 84604 zone 6b
- 84605 zone 7a
- 84606 zone 7a
Nearby cities
- Orem zone 7a, last frost Apr 19
- Springville zone 7a, last frost Apr 25
- Spanish Fork zone 7a, last frost Apr 25
- Lindon zone 7a, last frost Apr 17
- Pleasant Grove zone 7a, last frost Apr 17
- American Fork zone 7a, last frost Apr 17
- Payson zone 7a, last frost May 4
- Cedar Hills zone 7a, last frost May 2
Questions
What growing zone is Provo, UT?
Provo is in USDA Plant Hardiness Zone 7a (average extreme winter low 0°F to 5°F), according to the USDA 2023 map. Some ZIP codes of the city fall in zone 6b.
When is the last frost in Provo?
The average last spring frost (32°F) in Provo is April 18. There is still a 10% chance of frost until May 5.
When can I plant tomatoes in Provo?
Transplant tomatoes outdoors 1–2 weeks after the average last frost: around Apr 25 – May 2. Start seeds indoors 6–8 weeks before the last frost.
Frost dates: NOAA U.S. Climate Normals 1991–2020, station Provo Byu, UT (USC00427064), 1.5 km (0.9 mi) from the city center, elevation 1393 m, based on 30 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.