Brigham City, Utah, sits in USDA hardiness zone 6b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
These conditions suit cabbage, hazelnut, lavender, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Brigham 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 Brigham 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 Brigham City — soil, climate, flood, and parcel records. How we handle your address.
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Brigham City — the short answer
Brigham City, Utah: USDA zone 6b, about 209 days between hard freezes, across 16K acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 29
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~209
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 16K 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 6b is Brigham City's average, not your lot's — a low corner or a tree line moves it. Against Brigham City's 209-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Brigham City
Each reading below is measured for Brigham City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBrigham City runs about 209 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
MeasuredBrigham City sits in USDA hardiness zone 6b.
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 Brigham City is in
Brigham City sits in the Central Basin and Range — EPA Level III, inside the wider North American Deserts. That is read at Brigham City's own centroid rather than borrowed from Box Elder County.
What Grows in Brigham City
Every plant below cleared Brigham City's own zone 6b and its 209-day season. Each card opens that plant's Utah profile. How we score.
Is it too late to plant in Brigham City?
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 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 Oct 29 — 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 Brigham City
Closest first, within ~10 miles of Brigham City. Listing isn't leaking, and distance isn't exposure.
- NIAGARA BOTTLING, LLCBrownfields · 0.8 mi
- BRIGHAM CITY BULK STORAGE AND CARDLOCKToxics Release Inventory · 0.9 mi
- STORM PRODS INCToxics Release Inventory · 1.2 mi
- BRIGHAM CITY STATIONUnderground Storage Tanks · 1.2 mi
- HYPER COMP ENGINEERING INC.Brownfields · 1.2 mi
- RAHKONEN DRUMSSuperfund · 1.2 mi
- LOVES TRAVEL STOP # 686Underground Storage Tanks · 1.3 mi
- BIG J MILLING & ELEV. CO, INC.Underground Storage Tanks · 1.3 mi
- AUTOLIV ASP INCToxics Release Inventory · 1.3 mi
- AUTOLIV NORTH AMERICAToxics Release Inventory · 1.3 mi
- AUTOLIV NORTH AMERICABrownfields · 1.3 mi
- BRIGHAM CITY CORP./WASTE WATERUnderground Storage Tanks · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Brigham 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 Brigham City.
Total Sites
185
within ~10 miles of Brigham City
Risk Level
High
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Brigham City
Severity Distribution
within ~10 miles of Brigham City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Brigham City, two things run higher than the national average within ~10 miles of Brigham City — CAFO (16 sites) and Mining (31 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Brigham 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 Brigham City average
Your land is one point inside Brigham City
Everything above resolves to Brigham City as a whole — one PHZM band and one 28°F frost record, read across 16K 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 Brigham City Average
Brigham City Average
- ●USDA Zones 6b, averaged across Brigham City
- ●One soil character for all of Brigham City
- ●Frost dates read at Brigham City's scale: Apr 3 to Oct 29
YOUR Parcel
- ✓Your exact zone, not Brigham City's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Brigham City
Pull a site-specific report for your exact address in Brigham City, Utah — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Brigham City averages can't show:
We read public map data around Brigham City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Brigham City average
How we know this about Brigham 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 Brigham 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 Brigham City
When does frost risk typically end in Brigham City?
The last hard freeze (28°F) in Brigham City 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 Brigham City?
The first hard freeze (28°F) in Brigham City typically arrives around Oct 29, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 15, so the watching starts about Sep 29 — about 209 days after the spring freeze cleared.
How long is the growing season in Brigham City?
Measured between 28°F hard freezes, Brigham City sees about 209 frost-free days — roughly Apr 3 through Oct 29, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 24 to Oct 15, about 174 days.
Is the soil safe to grow vegetables in Brigham City?
The federal record around Brigham City runs heavier than most — 185 documented sites, mostly Underground Storage Tanks entries (76), the nearest Brownfields record about 0.8 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 Brigham City?
From about Sep 29 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 29 (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 29. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Brigham City's scale — its 6b band and its 209-day season. Your yard writes its own version of Brigham 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 Brigham City’s own scale
6 of the readings below were taken at Brigham City's own scale — its own ~209-day season between 28°F freezes, the 15,765 acres it covers and 185 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Brigham City's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Brigham City's own 28°F hard-freeze dates, about Apr 3 and Oct 29 and the ~209-day span between themNOAA 1991–2020 Climate Normals
- 185 documented contamination sites on the federal record near Brigham City, the closest Brownfields record about 0.8 miles out from the town centreFederal environmental registers
- Brigham City's boundary and the 15,765 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~209-day seasonGrowable Ground crop-matching engine
- The ecoregion at Brigham City'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 Brigham City's 15,765 acres read through its county's SSURGO summaryfrom Box Elder County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Box Elder 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 Box Elder County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Brigham City's 15,765 acreswhy one lot differs from the next →
- Which side of Brigham 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 15,765 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.8 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 Brigham City-wide figureread your own land →
More in Utah
Wider growing context
What grows across UtahBrigham City sits outside our named growing regions, so Utah as a whole is its closest context here.
Nearby growing guides