White Mesa, Utah, sits in USDA hardiness zone 7b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
The conditions favor cabbage, prickly pear, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in White Mesa, no two yards are alike.
A low spot, a south-facing slope, or a stand of trees moves the frost date and sun across a single White Mesa lot. Enter your address and we'll score 1,086 plants against your land's actual soil, sun, and frost.
We read public map data around White Mesa — soil, climate, flood, and parcel records. How we handle your address.
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White Mesa — the short answer
White Mesa, Utah: USDA zone 7b, about 214 days between hard freezes, across 10K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~214
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 10K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 7b is White Mesa's average, not your lot's — a low corner or a tree line moves it. Against White Mesa's 214-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in White Mesa
Each reading below is measured for White Mesa itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWhite Mesa runs about 214 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredWhite Mesa sits in USDA hardiness zone 7b.
The zone sets which perennials, shrubs, and fruit trees live through an average winter here — a plant rated for a colder zone is a safe bet, one rated warmer needs winter protection or gets treated as an annual.
Match perennials and fruit to the zone before you buy, so nothing you plant is a gamble against the cold.
USDA PHZM 2023
The kind of country White Mesa is in
White Mesa sits in the Colorado Plateaus — EPA Level III, inside the wider North American Deserts. That is read at White Mesa's own centroid rather than borrowed from San Juan County.
What Grows in White Mesa
Every plant below cleared White Mesa's own zone 7b and its 214-day season. Each card opens that plant's Utah profile. How we score.
Is it too late to plant in White Mesa?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 3 — 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.
What's on the federal record near White Mesa
Closest first, within ~10 miles of White Mesa. Listing isn't leaking, and distance isn't exposure.
- WHITE MESA TRAVEL CENTERUnderground Storage Tanks · 0.6 mi
- BLANDING CITYPFAS · 5.4 mi
- UMETCO MINERALS CORPORATIONUnderground Storage Tanks · 5.7 mi
- SHIRT TAIL JUNCTION C-STORE SHELLUnderground Storage Tanks · 8.0 mi
- (D-37-22)10ddb- 1Nitrate · 8.3 mi
- UTAH ARNG BLANDING ARMORY/FMSBrownfields · 8.4 mi
- BLANDING AIRPORTUnderground Storage Tanks · 8.5 mi
- (D-37-22)10dbd- 1Nitrate · 8.5 mi
- BCL DISTRIBUTING COMPANYToxics Release Inventory · 9.6 mi
- UDOT STA # 4451Underground Storage Tanks · 9.8 mi
- PERSHING PROJECT - BLANDING LAUNCH COMPLEXSuperfund · 10.0 mi
Measured from White Mesa's center, not your beds. Run your own address for what's upwind of you specifically.
Environmental Intelligence
The counts behind that headline — every source type on the record near White Mesa.
Total Sites
13
within ~10 miles of White Mesa
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of White Mesa
Severity Distribution
within ~10 miles of White Mesa
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in White Mesa
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,086 plant recommendations.
25+ data sources read at your address, not the White Mesa average
Your land is one point inside White Mesa
Everything above resolves to White Mesa as a whole — one PHZM band and one 28°F frost record, read across 10K acres. Your parcel is one point inside that footprint. Slope, tree cover, a low spot that pools cold air, and what is in the soil are all resolved at the address, and none of them are visible at town scale. That is the honest boundary of this page, and the reason the next step is a reading of your own ground rather than a better local average.
Your Lot vs the White Mesa Average
White Mesa Average
- ●USDA Zones 7b, averaged across White Mesa
- ●One soil character for all of White Mesa
- ●Frost dates read at White Mesa's scale: Apr 3 to Nov 3
YOUR Parcel
- ✓Your exact zone, not White Mesa's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in White Mesa
Pull a site-specific report for your exact address in White Mesa, Utah — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that White Mesa averages can't show:
We read public map data around White Mesa — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the White Mesa average
How we know this about White Mesa
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at White Mesa’s own record; boundaries and acreage from US Census TIGER/Line 2025; the contamination records from the federal sources named in their beats above. Soil is not read at town grain anywhere on this page — there is no town-resolution survey in our data, which is why you will find no soil grid here rather than a statewide one wearing a local label. The resolution ledger below names every figure this page inherited.
Common questions about White Mesa
When does frost risk typically end in White Mesa?
The last hard freeze (28°F) in White Mesa typically lands around Apr 3, per NOAA 1991–2020 climate normals — earlier than the light-frost dates most charts quote. That marks the hard freeze, not the last light frost — lighter frosts keep biting past it, which is why tender transplants here wait until about Apr 24.
When is the first frost in White Mesa?
The first hard freeze (28°F) in White Mesa typically arrives around Nov 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 20, so the watching starts about Oct 4 — about 214 days after the spring freeze cleared.
How long is the growing season in White Mesa?
Measured between 28°F hard freezes, White Mesa sees about 214 frost-free days — roughly Apr 3 through Nov 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 24 to Oct 20, about 179 days.
Is the soil safe to grow vegetables in White Mesa?
The federal record around White Mesa is a meaningful one — 13 documented sites, mostly Underground Storage Tanks entries (5), the nearest Underground Storage Tanks record about 0.6 miles out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in White Mesa?
From about Oct 4 the job here turns from planting to protecting — the last start even a 30-day crop can finish. As the season closes around the first 28°F hard freeze near Nov 3 (NOAA 1991–2020 climate normals), three moves buy time: row cover or an old sheet over tender plants on still, clear nights; water the soil the afternoon before a freeze, so it holds warmth overnight; and harvest tomatoes, peppers and basil before Nov 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at White Mesa's scale — its 7b band and its 214-day season. Your yard writes its own version of White Mesa's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
What this page reads at White Mesa’s own scale
6 of the readings below were taken at White Mesa's own scale — its own ~214-day season between 28°F freezes, the 10,015 acres it covers and 13 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- White Mesa's own USDA hardiness band, zones 7bUSDA PHZM 2023
- White Mesa's own 28°F hard-freeze dates, about Apr 3 and Nov 3 and the ~214-day span between themNOAA 1991–2020 Climate Normals
- 13 documented contamination sites on the federal record near White Mesa, the closest Underground Storage Tanks record about 0.6 miles out from the town centreFederal environmental registers
- White Mesa's boundary and the 10,015 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~214-day seasonGrowable Ground crop-matching engine
- The ecoregion at White Mesa's own centroid, the Colorado PlateausUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so White Mesa's 10,015 acres read through its county's SSURGO summaryfrom San Juan County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom San Juan County
- The growing challenges every Utah grower plans around — written at state scale, so they stay on the state guidefrom Utah
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom San Juan County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among White Mesa's 10,015 acreswhy one lot differs from the next →
- Which side of White Mesa you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 10,015 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.6 miles out, measured from the town centrehow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — measured at your address, and averaged away by any White Mesa-wide figureread your own land →
More in Utah
Wider growing context
What grows across UtahWhite Mesa sits outside our named growing regions, so Utah as a whole is its closest context here.
Nearby growing guides