What Growing Zone Is Utah In?

Last updated September 6, 2026

USDA hardiness zones

5b to 8b

2023 USDA Plant Hardiness Zone Map

Utah spans USDA hardiness zone 5b to 8b across its major population centers, according to the 2023 USDA Plant Hardiness Zone Map. That's a real range, not a single number: where you fall in it depends on where in the state you actually are.

Find your exact zone by ZIP code

Find your exact zone

US ZIP code

Your USDA hardiness zone

Zone 6b

Avg. annual minimum (°F)

-5°F to 0°F

Avg. annual minimum (°C)

-21°C to -18°C

Nearest reference point: Chicago, IL

This is a regional estimate based on the nearest of 826 reference points, each matched to the official 2023 USDA zone map. It’s accurate to within about a half-zone across most of the country, but elevation shifts zones over short distances, so if you’re in mountainous terrain, check the official USDA map for your exact address (see Sources below).

Utah's USDA Hardiness Zones

Here's how the zone shifts across Utah's major cities:

City	USDA Zone
Park City	5b
Salt Lake City	7b
Moab	7b
St. George	8b

For your exact zone by ZIP code, use the Hardiness Zone Finder, and for what a zone number actually measures (and doesn't), see how zones actually work.

Frost Dates in Utah

Frost dates track zone, so they shift across Utah the same way the zone number does:

Wasatch Back (Park City) (zone 5): average last frost Apr 8 - Apr 22, average first frost Oct 8 - Oct 22.
Utah's Dixie (St. George) (zone 8): average last frost Mar 8 - Mar 22, average first frost Nov 8 - Nov 22.

These are averages, not guarantees. For your specific frost window, use the Frost Date Calculator. For a full vegetable-by-vegetable planting calendar already calculated from Utah's frost dates, see the Utah Planting Calendar.

USU Forestry Extension's elevation-to-zone table shows St. George (2,857 ft) landing near zone 7-8, Salt Lake City (4,225 ft) near zone 6-7, and Park City (6,923 ft) near zone 5, illustrating how strongly elevation drives Utah's hardiness zones.

What Grows Well in Utah's Zones

A few real, zone-appropriate picks recommended by Utah State University Extension, Center for Water-Efficient Landscaping for Utah landscapes: not an exhaustive list, but a genuine starting point.

Curl-leaf mountain mahogany (Cercocarpus ledifolius)
Purple coneflower (Echinacea purpurea)
Daylily (Hemerocallis x hybrida)
Sedum (Sedum spp.)
Columbine (Aquilegia spp.)
Lady's mantle (Alchemilla mollis)

Ready to find your exact zone? Use the Hardiness Zone Finder: enter your ZIP code for a precise match against the 2023 USDA map.

Utah Growing Zone FAQ

What growing zone is Utah in?

Utah spans USDA hardiness zones 5b to 8b on the 2023 USDA Plant Hardiness Zone Map. Park City is zone 5b and Salt Lake City is zone 7b; enter your ZIP code in the Hardiness Zone Finder for your exact zone.

What growing zone is Park City, UT?

Park City is in USDA hardiness zone 5b on the 2023 USDA map. Zones within a city can differ by half a zone, so check your ZIP code for an exact match.

What growing zone is Salt Lake City, UT?

Salt Lake City is in USDA hardiness zone 7b on the 2023 USDA map. Zones within a city can differ by half a zone, so check your ZIP code for an exact match.

What growing zone is Moab, UT?

Moab is in USDA hardiness zone 7b on the 2023 USDA map. Zones within a city can differ by half a zone, so check your ZIP code for an exact match.

What growing zone is St. George, UT?

St. George is in USDA hardiness zone 8b on the 2023 USDA map. Zones within a city can differ by half a zone, so check your ZIP code for an exact match.

A home yard in northern Utah, with the Wasatch Mountains beyond and dry summer light, planted with curl-leaf mountain mahogany, purple coneflower and daylily — Plants that suit Utah: curl-leaf mountain mahogany, purple coneflower and daylily. AI-generated image.

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The Spacing & Planting Cheat Sheet

When to start, when to plant, how far apart.

Sources & further reading

Zone and city data checked against the official USDA Plant Hardiness Zone Map. Plant recommendations sourced from Utah State University Extension, Center for Water-Efficient Landscaping. Climate note sourced from Utah State University Forestry Extension. For more on how we build and verify reference data across this site, see our methodology page.

Growing zones in nearby states

Gardening near a state line? Zones don't stop at the border:

Or browse all 51 state growing-zone guides.