Spring City, Utah, sits in USDA hardiness zone 5b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Crops well matched to these conditions include cabbage, cranberry, lavender, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Spring City, 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 Spring City 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 Spring City — soil, climate, flood, and parcel records. How we handle your address.
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Spring City — the short answer
Spring City, Utah: USDA zone 5b, about 145 days between hard freezes, across 901 acres of city.
- USDA zone
- 5b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 13
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~145
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 901 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 5b is Spring City's average, not your lot's — a low corner or a tree line moves it. Against Spring City's 145-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Spring City
Each reading below is measured for Spring City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSpring City runs about 145 days between hard freezes — a short growing season.
Long-maturing crops like melons, sweet potatoes, and winter squash can run out of runway before the first hard freeze, ripening late or not at all.
Lead with fast-maturing varieties, and stretch the season on both ends with cold frames, low tunnels, or a greenhouse.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredSpring City sits in USDA hardiness zone 5b.
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 Spring City is in
Spring City sits in the Wasatch and Uinta Mountains — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Spring City's own centroid rather than borrowed from Sanpete County.
What Grows in Spring City
Every plant below cleared Spring City's own zone 5b and its 145-day season. Each card opens that plant's Utah profile. How we score.
Is it too late to plant in Spring City?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Apr 15; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 13 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 5 — long-season crops need about 90 days of runway, quick greens only 30. Even here the calendar’s edges hold value: thirty-day greens late in the window, then garlic and a rested bed for spring.
What's on the federal record near Spring City
Closest first, within ~10 miles of Spring City. Listing isn't leaking, and distance isn't exposure.
- SFI COMPUTERSBrownfields · 900 ft
- SPRING CITY SERVICE (RAFTER CHECK)Underground Storage Tanks · 1300 ft
- WHITE ACRES RANCHCAFO · 1400 ft
- SPRING CITY CORPORATIONBrownfields · 1900 ft
- (D-15- 4)32bab- 2Nitrate · 0.8 mi
- (D-15- 4)31dcc- 1Nitrate · 1.8 mi
- (D-15- 4) 8bcd- 1Nitrate · 2.9 mi
- (D-15- 3)26ccd- 1Nitrate · 3.7 mi
- MOUNT PLEASANT ARMORYUnderground Storage Tanks · 3.8 mi
- SUNDERLAND DAIRY INC.CAFO · 3.8 mi
- TURKEY VALLEY FARMCAFO · 3.8 mi
- J & F COUNTRY STOREUnderground Storage Tanks · 3.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Spring City'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 Spring City.
Total Sites
76
within ~10 miles of Spring City
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Spring City
Severity Distribution
within ~10 miles of Spring City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Spring City, two things run higher than the national average within ~10 miles of Spring City — CAFO (4 sites) and Nitrate (28 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Spring City
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 Spring City average
Your land is one point inside Spring City
Everything above resolves to Spring City as a whole — one PHZM band and one 28°F frost record, read across 901 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 Spring City Average
Spring City Average
- ●USDA Zones 5b, averaged across Spring City
- ●One soil character for all of Spring City
- ●Frost dates read at Spring City's scale: May 13 to Oct 5
YOUR Parcel
- ✓Your exact zone, not Spring City's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Spring City
Pull a site-specific report for your exact address in Spring City, Utah — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Spring City averages can't show:
We read public map data around Spring City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Spring City average
How we know this about Spring City
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 Spring City’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 Spring City
When does frost risk typically end in Spring City?
The last hard freeze (28°F) in Spring City typically lands around May 13, 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 Jun 3.
When is the first frost in Spring City?
The first hard freeze (28°F) in Spring City typically arrives around Oct 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 21, so the watching starts about Sep 5 — about 145 days after the spring freeze cleared.
How long is the growing season in Spring City?
Measured between 28°F hard freezes, Spring City sees about 145 frost-free days — roughly May 13 through Oct 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 3 to Sep 21, about 110 days.
Is the soil safe to grow vegetables in Spring City?
The federal record around Spring City shows 76 documented sites, mostly Underground Storage Tanks entries (30), the nearest Brownfields record about 0.2 miles out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do gardeners stretch the season in Spring City?
With about 145 frost-free days between hard freezes, Spring City rewards the classic extension moves: floating row cover buys roughly two to four extra weeks at each shoulder — on this season that is a working window nearer 173 to 201 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 13 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Spring City's scale — its 5b band and its 145-day season. Your yard writes its own version of Spring City'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 Spring City’s own scale
6 of the readings below were taken at Spring City's own scale — its own ~145-day season between 28°F freezes, the 901 acres it covers and 76 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Spring City's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Spring City's own 28°F hard-freeze dates, about May 13 and Oct 5 and the ~145-day span between themNOAA 1991–2020 Climate Normals
- 76 documented contamination sites on the federal record near Spring City, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Spring City's boundary and the 901 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~145-day seasonGrowable Ground crop-matching engine
- The ecoregion at Spring City's own centroid, the Wasatch and Uinta MountainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Spring City's 901 acres read through its county's SSURGO summaryfrom Sanpete County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Sanpete 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 Sanpete County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Spring City's 901 acreswhy one lot differs from the next →
- Which side of Spring City you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 901 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 Spring City-wide figureread your own land →
More in Utah
Wider growing context
What grows across UtahSpring City sits outside our named growing regions, so Utah as a whole is its closest context here.
Nearby growing guides