Planting Dates for Utah
Utah's varied elevation and desert climate create diverse growing conditions. The Wasatch Front (Salt Lake City area) has the most moderate conditions, while southern Utah is hot and arid.
USDA Zones 4a-9a • 90-210 frost-free days depending on location
Frost Dates in Utah
Average last spring frost and first fall frost dates for Utah cities. Use these to calculate your planting windows.
| City | Last Spring Frost | First Fall Frost | Frost-Free Days | USDA Zone |
|---|---|---|---|---|
| Salt Lake City | Apr 19 | Oct 18 | 182 | 7a |
| Provo | Apr 27 | Oct 10 | 166 | 7a |
| St. George | Mar 15 | Nov 8 | 238 | 9a |
Gardening Tips for Utah
- ✓The Wasatch Front offers Utah's best combination of season length and water access.
- ✓Southern Utah gardeners face extreme heat — use shade cloth in summer.
- ✓High-altitude gardens (Park City, Brian Head) have very short growing seasons.
- ✓Utah's alkaline soils benefit from sulfur and compost amendments.
What to Plant in Utah
Cold-Hardy Crops (plant early)
These crops tolerate frost and can be planted 2-6 weeks before your last frost date.
30-60 days from sowing
55-70 days from sowing
60-80 days from sowing
50-70 days from sowing
55-80 days from transplant
35-50 days from sowing
20-35 days from sowing
July-August the following year
90-120 days from transplant
70-120 days from planting
50-70 days from sowing
50-60 days from sowing
Warm-Season Crops (plant after last frost)
Start these indoors and transplant after all frost danger has passed.
60-85 days from transplant
60-90 days from transplant
50-65 days from sowing
50-65 days from sowing
45-60 days from sowing
60-100 days from sowing
30-60 days from sowing
Get Exact Planting Dates for Utah
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Frequently Asked Questions
When is the last frost date in Utah?
Last frost dates in Utah vary by city: Salt Lake City (Apr 19), Provo (Apr 27), St. George (Mar 15).
What USDA hardiness zones are in Utah?
Utah spans USDA hardiness zones 4a-9a. Your specific zone determines which perennials survive winter and when to start planting annuals.
What vegetables grow best in Utah?
Hardy crops like peas, kale, spinach, and garlic thrive across Utah. In warmer zones, tomatoes, peppers, and cucumbers do well with proper timing. Use our free calculator for exact planting dates.
How long is the growing season in Utah?
90-210 frost-free days depending on location. Extend your season with cold frames, row covers, and indoor seed starting.
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Free Calculator
Calculate exact planting dates based on your location and frost dates.