Quamba, Minnesota, sits in USDA hardiness zone 4a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
The conditions favor cabbage, cranberry, turkish rocket, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Quamba, 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 Quamba 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 Quamba — soil, climate, flood, and parcel records. How we handle your address.
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Quamba — the short answer
Quamba, Minnesota: USDA zone 4a, about 163 days between hard freezes, across 451 acres of city.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 30
- 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
- ~163
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 451 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 Quamba's average, not your lot's — a low corner or a tree line moves it. Against Quamba's 163-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Quamba
Each reading below is measured for Quamba itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredQuamba runs about 163 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
MeasuredQuamba 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 Quamba is in
Quamba sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Quamba's own centroid rather than borrowed from Kanabec County.
What Grows in Quamba
Every plant below cleared Quamba's own zone 4a and its 163-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Quamba?
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 Apr 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 30 (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 Quamba
Closest first, within ~10 miles of Quamba. Listing isn't leaking, and distance isn't exposure.
- COUGARVILLE GARAGEBrownfields · 350 ft
- Former Service StationUnderground Storage Tanks · 500 ft
- 040N23W35BCC 01 nr QuambaNitrate · 0.8 mi
- DENNIS BARTA PROPERTYBrownfields · 3.9 mi
- B & J ServiceUnderground Storage Tanks · 4.2 mi
- 515663Nitrate · 4.8 mi
- Mora Municipal AirportUnderground Storage Tanks · 4.9 mi
- EAST CENTRAL VETERINARIANS - MORA CLINICBrownfields · 5.1 mi
- INGENUITY INDUSTRIAL MACHININBrownfields · 5.2 mi
- PTE INCBrownfields · 5.2 mi
- FEDERATED PROPANE - MORABrownfields · 5.3 mi
- RON'S HEATING & REFRIGERATIONBrownfields · 5.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Quamba'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 Quamba.
Total Sites
122
within ~10 miles of Quamba
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Quamba
Severity Distribution
within ~10 miles of Quamba
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Quamba, Nitrate runs higher than the national average — 32 sites within ~10 miles of Quamba. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Quamba
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 Quamba average
Your land is one point inside Quamba
Everything above resolves to Quamba as a whole — one PHZM band and one 28°F frost record, read across 451 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 Quamba Average
Quamba Average
- ●USDA Zones 4a, averaged across Quamba
- ●One soil character for all of Quamba
- ●Frost dates read at Quamba's scale: Apr 30 to Oct 10
YOUR Parcel
- ✓Your exact zone, not Quamba's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Quamba
Pull a site-specific report for your exact address in Quamba, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Quamba averages can't show:
We read public map data around Quamba — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Quamba average
How we know this about Quamba
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 Quamba’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 Quamba
When does frost risk typically end in Quamba?
The last hard freeze (28°F) in Quamba typically lands around Apr 30, 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 21.
When is the first frost in Quamba?
The first hard freeze (28°F) in Quamba 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 163 days after the spring freeze cleared.
How long is the growing season in Quamba?
Measured between 28°F hard freezes, Quamba sees about 163 frost-free days — roughly Apr 30 through Oct 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 21 to Sep 26, about 128 days.
Is the soil safe to grow vegetables in Quamba?
The federal record around Quamba shows 122 documented sites, mostly Brownfields entries (47), the nearest Brownfields record under a tenth of a mile 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 I protect my plants from frost in Quamba?
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 Quamba's scale — its 4a band and its 163-day season. Your yard writes its own version of Quamba'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 Quamba’s own scale
6 of the readings below were taken at Quamba's own scale — its own ~163-day season between 28°F freezes, the 451 acres it covers and 122 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Quamba's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Quamba's own 28°F hard-freeze dates, about Apr 30 and Oct 10 and the ~163-day span between themNOAA 1991–2020 Climate Normals
- 122 documented contamination sites on the federal record near Quamba, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Quamba's boundary and the 451 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~163-day seasonGrowable Ground crop-matching engine
- The ecoregion at Quamba's own centroid, the North Central Hardwood ForestsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Quamba's 451 acres read through its county's SSURGO summaryfrom Kanabec County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kanabec 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 Kanabec County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Quamba's 451 acreswhy one lot differs from the next →
- Which side of Quamba you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 451 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Quamba-wide figureread your own land →
More in Minnesota
Wider growing context
What grows across MinnesotaQuamba sits outside our named growing regions, so Minnesota as a whole is its closest context here.
Nearby growing guides