Clearfield, Utah, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
On paper, cabbage, hazelnut, california poppy, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Clearfield, 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 Clearfield 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 Clearfield — soil, climate, flood, and parcel records. How we handle your address.
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Clearfield — the short answer
Clearfield, Utah: USDA zone 7a, about 223 days between hard freezes, across 5K acres of city.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~223
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 5K 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 7a is Clearfield's average, not your lot's — a low corner or a tree line moves it. Against Clearfield's 223-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Clearfield
Each reading below is measured for Clearfield itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredClearfield runs about 223 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
MeasuredClearfield sits in USDA hardiness zone 7a.
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 Clearfield is in
Clearfield sits in the Central Basin and Range — EPA Level III, inside the wider North American Deserts. That is read at Clearfield's own centroid rather than borrowed from Davis County.
What Grows in Clearfield
Every plant below cleared Clearfield's own zone 7a and its 223-day season. Each card opens that plant's Utah profile. How we score.
Is it too late to plant in Clearfield?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Feb 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 27 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 5 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Clearfield
Closest first, within ~10 miles of Clearfield. Listing isn't leaking, and distance isn't exposure.
- MALNOVE INC OF UTAHBrownfields · 850 ft
- NORTHROP GRUMMAN SYSTEMS CORPORATION - ASBU CLEARFIELD H5Brownfields · 850 ft
- ATK SPACE SYSTEMS LLC - CLEARFIELD, H10Brownfields · 850 ft
- NATIONAL STANDARD COMPANYBrownfields · 850 ft
- TECH STEEL INC.Brownfields · 850 ft
- ATK SPACE SYSTEMS LLC - CLEARFIELD, H10Toxics Release Inventory · 850 ft
- STONE CASTLE RECYCLING WASTE SITEBrownfields · 850 ft
- RYDER TRUCK RENTAL # 1638Brownfields · 850 ft
- NORTHROP GRUMMAN SYSTEMS CORPORATION - CLEARFIELD, G13Brownfields · 850 ft
- NORTHROP GRUMMAN SYSTEMS CORPORATION - CLEARFIELD, H-7Brownfields · 850 ft
- POLY EXCEL, LLC (FKA POLITWINE WESTERN)Brownfields · 850 ft
- SPORTS MOLDING INC.Brownfields · 850 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Clearfield'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 Clearfield.
Sources Checked
within ~10 miles of Clearfield
Severity Distribution
within ~10 miles of Clearfield
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Clearfield, two things run higher than the national average within ~10 miles of Clearfield — PFAS (19 sites) and Superfund (14 sites). That's not a problem with your land — it's information about it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Clearfield
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 Clearfield average
Your land is one point inside Clearfield
Everything above resolves to Clearfield as a whole — one PHZM band and one 28°F frost record, read across 5K 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 city 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 Clearfield Average
Clearfield Average
- ●USDA Zones 7a, averaged across Clearfield
- ●One soil character for all of Clearfield
- ●Frost dates read at Clearfield's scale: Mar 27 to Nov 5
YOUR Parcel
- ✓Your exact zone, not Clearfield's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Clearfield
Pull a site-specific report for your exact address in Clearfield, Utah — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Clearfield averages can't show:
We read public map data around Clearfield — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Clearfield average
How we know this about Clearfield
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Clearfield’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 city grain anywhere on this page — there is no city-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 Clearfield
When does frost risk typically end in Clearfield?
The last hard freeze (28°F) in Clearfield typically lands around Mar 27, 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 17.
When is the first frost in Clearfield?
The first hard freeze (28°F) in Clearfield typically arrives around Nov 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 22, so the watching starts about Oct 6 — about 223 days after the spring freeze cleared.
How long is the growing season in Clearfield?
Measured between 28°F hard freezes, Clearfield sees about 223 frost-free days — roughly Mar 27 through Nov 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 17 to Oct 22, about 188 days.
Is the soil safe to grow vegetables in Clearfield?
The federal record around Clearfield runs heavier than most — 1,038 documented sites, mostly Underground Storage Tanks entries (590), the nearest Brownfields record about 0.2 miles out — 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.
How do I protect my plants from frost in Clearfield?
From about Oct 6 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Clearfield's scale — its 7a band and its 223-day season. Your yard writes its own version of Clearfield'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 Clearfield’s own scale
6 of the readings below were taken at Clearfield's own scale — its own ~223-day season between 28°F freezes, the 4,925 acres it covers and 1,038 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Clearfield's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Clearfield's own 28°F hard-freeze dates, about Mar 27 and Nov 5 and the ~223-day span between themNOAA 1991–2020 Climate Normals
- 1,038 documented contamination sites on the federal record near Clearfield, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Clearfield's boundary and the 4,925 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~223-day seasonGrowable Ground crop-matching engine
- The ecoregion at Clearfield's own centroid, the Central Basin and RangeUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Clearfield's 4,925 acres read through its county's SSURGO summaryfrom Davis County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Davis 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 Davis County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Clearfield's 4,925 acreswhy one lot differs from the next →
- Which side of Clearfield you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,925 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Clearfield-wide figureread your own land →
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