Manti, Utah, sits in USDA hardiness zone 6a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Growers here do well with cabbage, blackberry, california poppy, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Manti, 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 Manti 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 Manti — soil, climate, flood, and parcel records. How we handle your address.
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Manti — the short answer
Manti, Utah: USDA zone 6a, about 160 days between hard freezes, across 2K acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~160
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 2K 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 6a is Manti's average, not your lot's — a low corner or a tree line moves it. Against Manti's 160-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Manti
Each reading below is measured for Manti itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredManti runs about 160 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredManti sits in USDA hardiness zone 6a.
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 Manti is in
Manti sits in the Wasatch and Uinta Mountains — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Manti's own centroid rather than borrowed from Sanpete County.
What Grows in Manti
Every plant below cleared Manti's own zone 6a and its 160-day season. Each card opens that plant's Utah profile. How we score.
Is it too late to plant in Manti?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Apr 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 10 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
What's on the federal record near Manti
Closest first, within ~10 miles of Manti. Listing isn't leaking, and distance isn't exposure.
- COX CONSTRUCTION CO. INC.Underground Storage Tanks · 300 ft
- THOMPSON OIL CO.Underground Storage Tanks · 450 ft
- NELL'S MOTORUnderground Storage Tanks · 600 ft
- JOES CHEVRONUnderground Storage Tanks · 900 ft
- SAN MAN CO.Underground Storage Tanks · 1200 ft
- TOP STOP C-3Underground Storage Tanks · 1300 ft
- W.R. WILLIAMSON, JR.Underground Storage Tanks · 1300 ft
- MANTI MOTEL AND TRADING POSTUnderground Storage Tanks · 2100 ft
- MANTI TEMPLEUnderground Storage Tanks · 2500 ft
- MANTI HIGH SCHOOLUnderground Storage Tanks · 0.6 mi
- SOUTHWEST FARMS INC.CAFO · 0.6 mi
- (D-18- 2)12bab- 1Nitrate · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Manti'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 Manti.
Total Sites
71
within ~10 miles of Manti
Risk Level
Elevated
Highest-severity
4 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Manti
Severity Distribution
within ~10 miles of Manti
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Manti, two things run higher than the national average within ~10 miles of Manti — CAFO (4 sites) and Superfund (4 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Manti
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 Manti average
Your land is one point inside Manti
Everything above resolves to Manti as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Manti Average
Manti Average
- ●USDA Zones 6a, averaged across Manti
- ●One soil character for all of Manti
- ●Frost dates read at Manti's scale: May 3 to Oct 10
YOUR Parcel
- ✓Your exact zone, not Manti's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Manti
Pull a site-specific report for your exact address in Manti, Utah — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Manti averages can't show:
We read public map data around Manti — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Manti average
How we know this about Manti
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 Manti’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 Manti
When does frost risk typically end in Manti?
The last hard freeze (28°F) in Manti typically lands around May 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 May 24.
When is the first frost in Manti?
The first hard freeze (28°F) in Manti typically arrives around Oct 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 26, so the watching starts about Sep 10 — about 160 days after the spring freeze cleared.
How long is the growing season in Manti?
Measured between 28°F hard freezes, Manti sees about 160 frost-free days — roughly May 3 through Oct 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 24 to Sep 26, about 125 days.
Is the soil safe to grow vegetables in Manti?
The federal record around Manti is a meaningful one — 71 documented sites, mostly Underground Storage Tanks entries (30), the nearest Underground Storage Tanks record under a tenth of a mile 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 Manti?
From about Sep 10 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 Oct 10 (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 Oct 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Manti's scale — its 6a band and its 160-day season. Your yard writes its own version of Manti'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 Manti’s own scale
6 of the readings below were taken at Manti's own scale — its own ~160-day season between 28°F freezes, the 2,061 acres it covers and 71 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Manti's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Manti's own 28°F hard-freeze dates, about May 3 and Oct 10 and the ~160-day span between themNOAA 1991–2020 Climate Normals
- 71 documented contamination sites on the federal record near Manti, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Manti's boundary and the 2,061 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~160-day seasonGrowable Ground crop-matching engine
- The ecoregion at Manti'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 Manti's 2,061 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 Manti's 2,061 acreswhy one lot differs from the next →
- Which side of Manti you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,061 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Manti-wide figureread your own land →
More in Utah
Wider growing context
What grows across UtahManti sits outside our named growing regions, so Utah as a whole is its closest context here.