Hibbing, Minnesota, sits in USDA hardiness zone 4a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, cranberry, turkish rocket, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Hibbing, 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 Hibbing 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 Hibbing — soil, climate, flood, and parcel records. How we handle your address.
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Hibbing — the short answer
Hibbing, Minnesota: USDA zone 4a, about 150 days between hard freezes, across 116K acres of city.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~150
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 116K 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 4a is Hibbing's average, not your lot's — a low corner or a tree line moves it. Against Hibbing's 150-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Hibbing
Each reading below is measured for Hibbing itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHibbing runs about 150 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
MeasuredHibbing sits in USDA hardiness zone 4a.
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 Hibbing is in
Hibbing sits in the Northern Lakes and Forests — EPA Level III, inside the wider Northern Forests. That is read at Hibbing's own centroid rather than borrowed from St. Louis County.
What Grows in Hibbing
Every plant below cleared Hibbing's own zone 4a and its 150-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Hibbing?
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 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 6 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 3 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Hibbing
Closest first, within ~10 miles of Hibbing. Listing isn't leaking, and distance isn't exposure.
- DENTAL HEALTH SERVICEBrownfields · 1300 ft
- CONTINENTAL SALES HIBBING MNBrownfields · 1500 ft
- CUMMINS DIESEL HIBBINGSuperfund · 1500 ft
- Vic's CraneUnderground Storage Tanks · 1500 ft
- SHUBAT TRANSPORTATION COBrownfields · 1600 ft
- HIBBING FABRICATORS INCBrownfields · 1700 ft
- IRON RANGE TIRE SERVICE INCBrownfields · 1700 ft
- BERG PIANO SVCBrownfields · 1900 ft
- HIBBING VETERANS CLINICBrownfields · 2000 ft
- JC PENNEY 1937-2Brownfields · 2000 ft
- ANDERSON PIANO SERVICEBrownfields · 2100 ft
- HIBBING VA CBOCBrownfields · 2500 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Hibbing'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 Hibbing.
Total Sites
295
within ~10 miles of Hibbing
Risk Level
Elevated
Highest-severity
4 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Hibbing
Severity Distribution
within ~10 miles of Hibbing
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Hibbing, two things run higher than the national average within ~10 miles of Hibbing — Superfund (4 sites) and Brownfields (147 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Hibbing
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 Hibbing average
Your land is one point inside Hibbing
Everything above resolves to Hibbing as a whole — one PHZM band and one 28°F frost record, read across 116K 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 Hibbing Average
Hibbing Average
- ●USDA Zones 4a, averaged across Hibbing
- ●One soil character for all of Hibbing
- ●Frost dates read at Hibbing's scale: May 6 to Oct 3
YOUR Parcel
- ✓Your exact zone, not Hibbing's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Hibbing
Pull a site-specific report for your exact address in Hibbing, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Hibbing averages can't show:
We read public map data around Hibbing — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Hibbing average
How we know this about Hibbing
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 Hibbing’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 Hibbing
When does frost risk typically end in Hibbing?
The last hard freeze (28°F) in Hibbing typically lands around May 6, 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 27.
When is the first frost in Hibbing?
The first hard freeze (28°F) in Hibbing typically arrives around Oct 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 19, so the watching starts about Sep 3 — about 150 days after the spring freeze cleared.
How long is the growing season in Hibbing?
Measured between 28°F hard freezes, Hibbing sees about 150 frost-free days — roughly May 6 through Oct 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 27 to Sep 19, about 115 days.
Is the soil safe to grow vegetables in Hibbing?
The federal record around Hibbing is a meaningful one — 295 documented sites, mostly Brownfields entries (147), the nearest Brownfields record about 0.3 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 Hibbing?
From about Sep 3 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 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 Oct 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Hibbing's scale — its 4a band and its 150-day season. Your yard writes its own version of Hibbing'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 Hibbing’s own scale
6 of the readings below were taken at Hibbing's own scale — its own ~150-day season between 28°F freezes, the 116,497 acres it covers and 295 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Hibbing's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Hibbing's own 28°F hard-freeze dates, about May 6 and Oct 3 and the ~150-day span between themNOAA 1991–2020 Climate Normals
- 295 documented contamination sites on the federal record near Hibbing, the closest Brownfields record about 0.3 miles out from the town centreFederal environmental registers
- Hibbing's boundary and the 116,497 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~150-day seasonGrowable Ground crop-matching engine
- The ecoregion at Hibbing's own centroid, the Northern Lakes and ForestsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Hibbing's 116,497 acres read through its county's SSURGO summaryfrom St. Louis County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom St. Louis County
- The growing challenges every Minnesota grower plans around — written at state scale, so they stay on the state guidefrom Minnesota
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom St. Louis County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Hibbing's 116,497 acreswhy one lot differs from the next →
- Which side of Hibbing you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 116,497 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.3 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 Hibbing-wide figureread your own land →
More in Minnesota
Wider growing context
What grows across MinnesotaHibbing sits outside our named growing regions, so Minnesota as a whole is its closest context here.