Utah spans USDA hardiness zones 4a-8a, with a growing season of about 190 frost-free days — enough room for the full run of cool-season vegetables plus warm-season crops that finish before the first hard frost.
Those zone numbers rest on 5-20 inches of annual rainfall, a median of roughly 3,850 growing-degree days (base 50°F), and about 1,050 winter chill hours for tree fruit — the measurements that do the deciding. The prevailing soils — sandy loam, alkaline clay, desert sand, and lake sediment — differ most in how they drain, which is exactly where crop success is usually decided. On paper, cherry, peach, tomato, and sego lily all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Grounded inUSDA PHZM 2023•NOAA Climate Normals•USDA NRCS SSURGO•GDD aggregate (Cornell CALS)•Chill-hour aggregate (MSU Extension)•EPA FRS•USDA PLANTS•Growable Ground suitability scoring
Utah spans zones 4a-8a, but your yard sits in exactly one — and slope, tree cover, and low spots nudge it further. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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USDA Zones
4a-8a
USDA PHZM 2023
Last Frost
Apr 10 - Jun 1
NOAA 30-yr Normals
First Frost
Sep 15 - Oct 25
NOAA 30-yr Normals
Annual Rainfall
5-20 inches
NOAA Climate Normals
Zone maps are averages across Utah. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
The soil types that dominate Utah — how each drains decides more about crop success than almost anything else. Tap any soil to learn what it is and how to work with it.
Drainage
Fast. The sand fraction opens the soil up, so water moves through the root zone quickly and the surface rarely stays soggy. The trade is that nutrients ride out with the water.
What thrives
Root crops love it — carrots, potatoes, radishes, and onions size up cleanly in ground they can push through. Melons, sweet potatoes, asparagus, and most herbs appreciate the warmth and the drainage.
Alkaline clay looks like any clay — the difference is pH, not appearance. See the clay profile above.
Drainage
Slow, like any clay — water is deliberate going in and deliberate leaving.
What thrives
Plants that evolved on limey ground shrug at the pH: asparagus, brassicas, beets, spinach, figs, lavender, and many stone fruits on tolerant rootstocks. Yellowing leaves with green veins on other plants is the iron signal to read.
Drainage
Very fast at the surface, though hard mineral layers can lurk beneath and pond water where you least expect.
What thrives
Desert natives are the honest first choice — mesquite, palo verde, agave, desert wildflowers. With shade cloth, drip irrigation, and compost, raised desert beds grow exceptional peppers, melons, and winter greens.
No verified open-license photo yet — flat, fine, stone-free lakebed ground.
Drainage
Slow. The flatness that makes lakebed ground easy to farm also gives water nowhere to go, and the fine texture holds it.
What thrives
Famously productive for sugar beets, beans, corn, and vegetables — old lakebeds are some of the most valuable farmland in the northern states.
Soil data: USDA NRCS SSURGO · Soil types explained
Plants well-suited to Utah's climate, soils, and growing season — each links to its full growing profile.
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Across Utah, cool-season planting typically opens about four weeks before the local last hard freeze — county medians put that freeze near Apr 8, with the middle half of counties between Mar 23 and Apr 22 (NOAA 1991–2020 climate normals). Tender transplants wait two to three weeks past it, and fall planting counts back from first freezes mostly between Oct 22 and Nov 4 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
The plants Utah put its name on — cultural emblems, not growing recommendations.
Sego lily
Calochortus nuttallii
Designated 1911.
Populus tremuloides
Designated 2014. In our plant library — see its full growing profile.
Cherry
Designated 1997.
Spanish sweet onion
Designated 2002.
Plants the USDA PLANTS Database documents as native and present in Utah — a real per-state range, not just a zone match. Presence is statewide, so a plant may still be uncommon in your specific county; your state’s Cooperative Extension or a native-plant society is the local authority.
US-native plants whose hardiness range overlaps Utah’s USDA zones 4a-8a but which USDA PLANTS doesn’t map to a single state range here. Zone overlap is a starting filter, not a range map.
What an experienced grower plans around here — each one has a move.
Very low rainfall — irrigation essential
Design the drip system before the beds — with mulch over it, high-desert ground grows on a fraction of the water you'd guess.
Alkaline soils (pH 7.5-8.5) limit many species
A soil test pins your actual pH — adapted species take the ground, acid-lovers take containers, nothing is off the table.
High altitude frost risk in mountain valleys
Mountain valleys trade on frost dates, not zone — know your real window and keep row covers close in the shoulder weeks.
For cultivar selection, pest pressure, and planting-time guidance specific to Utah, the Utah State University Extension is the authoritative local source.
Safe to Grow Here?What the federal record shows across Utah — and how to grow with it.
We checked the federal record across Utah — 17,478 documented sites across 8 of the 9 source types we track.
The most significant on record: 202 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
Utah carries one of the heavier federal records we track — and that's not a verdict on your yard. Proximity to a documented site is information, not a diagnosis: nothing here says any particular parcel is affected. It does earn one concrete step — before food beds go in the ground, a professional soil test tells you exactly what you're working with, and raised beds with clean imported soil grow well almost anywhere in the meantime.
Severity Distribution
across Utah
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Utah, Mining runs higher than the national average — 3,654 sites nearby. That's not a problem with your land — it's information about it.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
State averages sketch the shape. Your soil, sun exposure, drainage, and microclimate decide what actually takes. Pull a site-specific report for your exact parcel.
Enter your address. We read your soil, sun, drainage, and frost dates, then score 1,112 plants against the real conditions on your land.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Utah spans USDA hardiness zones 4a-8a, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Across Utah, cool-season planting typically opens about four weeks before the local last hard freeze — county medians put that freeze near Apr 8, with the middle half of counties between Mar 23 and Apr 22 (NOAA 1991–2020 climate normals). Tender transplants wait two to three weeks past it, and fall planting counts back from first freezes mostly between Oct 22 and Nov 4 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Across Utah, the middle half of counties see their last hard freeze (28°F) between about Mar 23 and Apr 22, with a county median near Apr 8 (NOAA 1991–2020 climate normals). That marks the hard freeze, not the last light frost — light frosts can still bite for a few more weeks, so tender transplants usually wait another 2–3 weeks.
Measured between 28°F hard freezes, growing seasons across Utah's counties mostly run about 182 to 226 days, with a county median near 205 (NOAA 1991–2020 climate normals). Tender crops get a somewhat shorter practical window, since lighter frosts reach a few weeks past the hard-freeze dates on both ends.
Utah's zones 4a-8a support a wide range — strong performers include Cherry, Peach, Tomato, Sego Lily, and Blue Spruce. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Officially, Utah spans USDA zones 4a-8a (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
The federal record across Utah runs heavier than most — 17,478 documented sites — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
Start with three facts. Utah spans USDA zones 4a-8a, which sets what survives winter; last hard freezes range from about Mar 23 to Apr 22 across its counties (NOAA 1991–2020 climate normals); and 17,478 documented sites sit on the federal record here, so a soil test before food beds is the smart first step. From there, matching plants to your actual soil and sun is the fun part.
Everything on this page is a Utah average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.
Explore growing conditions by city or town in Utah.
Utah shares its dominant growing region with these states — a useful comparison if you're weighing where a crop will behave the same way.
