Utah Planting Zones – Growing Zones Guide

What Planting Zone Is Utah In?

On the 2023 USDA Plant Hardiness Zone Map, Utah runs roughly from zone 4a to zone 9a, based on 30-year averages of the coldest winter temperatures (1991–2020). Colder zones hug high mountain valleys and plateaus, while the balmy southwest around St. George and the “Utah Dixie” region now falls into the warmest zones. Most home gardens land between zones 5b and 7b.

• Northern Mountains & Cache Valley: Logan, Cache Valley, Bear Lake, and high valleys near the Wasatch and Uinta ranges are often zones 4b–6a, with snowy winters and shorter growing seasons.
• Wasatch Front & Central Valleys: Ogden, Salt Lake City, West Valley, Sandy, Draper, Orem, and Provo are generally zones 6b–7b, with four seasons, hot summers, and cold – but not brutal winters.
• Central & High Plateaus: Heber, Park City, Cedar City, Richfield, and other high towns sit around zones 4b–6b, with cool nights, late frosts, and excellent conditions for many hardy fruits and perennials.
• Canyon Country & Colorado Plateau: Moab, Monticello, Blanding, and surrounding red-rock country are typically zones 6a–8a, with big temperature swings, intense UV, and relatively long frost-free periods in lower elevations.
• Southwest Desert & “Utah Dixie”: St. George, Washington, Hurricane, Ivins, and nearby communities fall mostly in zones 8a–9a, with mild winters and one of the longest growing seasons in the interior West.

USDA Hardiness Zone Map for Utah

The updated 2023 USDA Plant Hardiness Zone Map uses 30-year climate normals (1991–2020) and higher-resolution elevation and terrain data than earlier versions. In Utah, the map clearly shows colder zones clustered in the high northern valleys and mountain plateaus, with warmer zones creeping up along the Wasatch Front and especially into the southwest corner of the state.

A simplified Utah planting zone map based on the 2023 USDA Plant Hardiness Zone Map (1991–2020 climate data).

Use the map together with your ZIP code to pinpoint your Utah garden zone. Look up your Utah planting zone by ZIP code using the USDA tool, then come back here or visit our Plant Finder for plants tailored to your zone, elevation, and site conditions.

Utah Growing Zones by Region

Utah looks like a simple rectangle on the map, but step outside and you find an intricate patchwork of microclimates. Elevation, canyon orientation, lake effect from the Great Salt Lake, wind, irrigation, urban heat islands, and even south-facing masonry walls can nudge your yard a half-zone – or more – warmer or colder than the official map.

Wasatch Front & Central Valleys (Approx. Zones 6b–7b)

This region includes Ogden, Layton, Bountiful, Salt Lake City, West Jordan, South Jordan, Sandy, Draper, Lehi, Orem, and Provo.

• Winters bring freezing nights and occasional deep cold snaps; summers are hot, dry, and very sunny, often pushing into the 90s°F.
• Soils range from heavy clay to loamy and alkaline; regular compost, mulch, and deep watering help roots thrive.
• Ideal for lawns and shrubs, but also excellent for vegetables, grapes, hardy fruit trees, and perennial borders when you match varieties to your zone.

Northern Mountains & Cache Valley (Approx. Zones 4b–6a)

Logan, Cache Valley towns, Bear Lake communities, and higher northern valleys share crisp mountain air, long winters, and cool summer nights.

• Shorter growing seasons favor cold-tolerant vegetables, quick-maturing crops, and hardy perennials that can handle late and early frosts.
• Last frosts may linger into mid–late May; first frosts often return by late September or early October.
• Season-extension tools – row covers, low tunnels, and small greenhouses – are especially helpful here.

High Plateaus & Mountain Towns (Approx. Zones 4b–6b)

Park City, Heber Valley, Cedar City, Brian Head, and central plateaus mix high elevation with cold winters and bright, dry summers.

• Expect late last frosts and earlier fall frosts; pick varieties with shorter days to maturity.
• Cool nights can boost flavor in crops like peas, greens, carrots, and many fruits.
• Windbreaks and snow capture (berms, hedges, fences) help insulate soils and protect perennials.

Canyon Country & Colorado Plateau (Approx. Zones 6a–8a)

Moab, Monticello, Blanding, and surrounding red-rock country blend hot summer days, cool nights, and relatively low humidity.

• Excellent for warm-season crops like melons, squash, tomatoes, and peppers when watered consistently and mulched.
• Big temperature swings mean both heat stress and late/early frosts are possible – keep row covers handy.
• Well-drained, often rocky or sandy soils benefit from added organic matter and regular deep irrigation.

Southwest Desert & “Utah Dixie” (Approx. Zones 8a–9a)

St. George, Washington, Hurricane, Ivins, and surrounding low-elevation valleys enjoy some of the warmest winters and longest growing seasons in the interior West.

• Last frosts often occur in March or early April, with first frosts not returning until late October, giving 200+ frost-free days in many locations.
• Perfect for heat-loving veggies, figs, pomegranates, and other long-season crops – if you provide water and mulch.
• Summer heat can be intense; afternoon shade, drip irrigation, and mulched beds are essential for many plants.

Best Plants for Utah Planting Zones

Once you know your Utah planting zone – and whether you garden along the Wasatch Front, in a cool mountain valley, or under hot St. George sun – you can work with your climate instead of fighting it. Focus on plants that tolerate intense UV, alkaline soils, dry air, and big day–night temperature swings. Choose perennials rated for zones 4–9, and time annual plantings around your frost dates and summer heat.

Vegetables for Utah Growing Zones

• Cool-season crops (spring and fall in most zones; winter in warm southwest valleys): lettuce, spinach, arugula, kale, collards, peas, broccoli, cabbage, carrots, beets, turnips, and radishes.
• Warm-season crops (after last frost in cooler zones; late winter through spring in zone 8–9 areas): tomatoes, peppers, summer squash, pumpkins, cucumbers, snap beans, sweet corn, okra, cowpeas, and melons in warmer locations.
• High-altitude & short-season favorites: Quick varieties of peas, lettuce, spinach, salad mixes, baby carrots, radishes, Asian greens, and compact determinate tomatoes grown with protection in zones 4–6.

Fruits & Trees for Utah Hardiness Zones

• Warm valleys & southwest deserts (zones 7b–9a): Low-chill peaches and apricots, plums, figs, pomegranates, and hardy grapes thrive with irrigation and good drainage.
• Wasatch Front & high valleys (zones 5–7): apples, pears, cherries, and many plums do well when matched to chill hours and protected from late frosts.
• Small fruits: strawberries, blackberries, raspberries, and currants flourish with regular water and mulch; in hot southwest microclimates, give afternoon shade.

Flowers & Ornamentals for Utah Garden Zones

• Desert-tough bloomers: lantana, desert marigold, globe mallow, penstemons, and autumn sage thrive in sunny, dry beds once established.
• Reliable perennials: yarrow, coneflowers, black-eyed Susan, ornamental grasses, lavender, and catmint love Utah’s sun when given decent drainage.
• Structural plants: Desert-adapted desert willow, Texas ranger, red yucca, agaves, and yuccas provide year-round form, flowers, and wildlife value with modest water.

Native Plants for Utah Landscapes

Utah native plants are adapted to local soils, wind, and rainfall – and they feed pollinators, birds, and beneficial insects. Mix native wildflowers, shrubs, trees, cacti, and grasses for a resilient, wildlife-friendly landscape that feels authentically Utah.

• Native wildflowers: desert marigold, blanket flower, penstemons, globemallows, evening primrose, and native milkweeds.
• Native grasses: sideoats grama, blue grama, alkali sacaton, and deer grass.
• Native shrubs & trees: Gambel oak, bigtooth maple, Utah serviceberry, mountain mahogany, rabbitbrush, and pinyon–juniper woodland species for structure and habitat.
• Cacti & succulents: Claret cup cactus, barrel cactus, prickly pear, hedgehog cacti, agaves, and yuccas for bold texture and pollinator-friendly blooms.

Interactive Utah Planting Calendar (General Guide)

Tap a month to see what to plant in Utah by zone. Use this as a starting point, then adjust for your exact frost dates, elevation, and whether you garden along the Wasatch Front, in a cool mountain valley, or in the warm southwest desert.

Utah Gardening Tips by Zone

Utah gardeners juggle intense sun, drying canyon winds, alkaline soils, monsoon storms, and shifting hardiness zones. These tips help plants thrive from zones 4a to 9a:

• Know your microclimate. A sheltered Salt Lake or Ogden courtyard can behave like a warmer zone 7–8, while an exposed bench or foothill lot may feel a full zone colder.
• Time your seasons. In warm southwest valleys, the prime season stretches from late winter through early summer and again in fall; in northern mountains and high plateaus, focus on late spring through early fall.
• Build better soil. Many Utah soils are alkaline and low in organic matter – add compost regularly, avoid lime, and consider raised beds for vegetables.
• Water wisely. Use drip irrigation, deep but infrequent watering, and thick mulch to conserve moisture and buffer roots from heat.
• Provide shade and wind protection. Shade cloth, fences, and living windbreaks protect tender plants from harsh afternoon sun and desiccating winds.
• Use season-extension tools. Row covers, low tunnels, and cold frames stretch the season in mountain valleys and protect warm-season crops from surprise frosts statewide.
• Choose heat- and drought-tolerant varieties. Favor vegetable varieties bred for high-altitude or arid climates and ornamentals labeled “drought tolerant” or “xeric.”
• Plan for wildlife. Deer, rabbits, voles, and gophers are common visitors – use fencing, cages, and resistant plant choices around high-value beds.
• Lean on native and desert-adapted plants. Use natives as a low-water backbone, then layer in edibles and higher-water plants where you can irrigate.