Deer River, Minnesota, sits in USDA hardiness zone 3b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Well-matched crops include cabbage, cranberry, turkish rocket, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Deer River, 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 Deer River 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 Deer River — soil, climate, flood, and parcel records. How we handle your address.
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Deer River — the short answer
Deer River, Minnesota: USDA zone 3b, about 161 days between hard freezes, across 971 acres of city.
- USDA zone
- 3b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 2
- 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
- ~161
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 971 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 3b is Deer River's average, not your lot's — a low corner or a tree line moves it. Against Deer River's 161-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Deer River
Each reading below is measured for Deer River itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredDeer River runs about 161 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
MeasuredDeer River sits in USDA hardiness zone 3b.
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 Deer River is in
Deer River sits in the Northern Lakes and Forests — EPA Level III, inside the wider Northern Forests. That is read at Deer River's own centroid rather than borrowed from Itasca County.
What Grows in Deer River
Every plant below cleared Deer River's own zone 3b and its 161-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Deer River?
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 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 2 (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. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
What's on the federal record near Deer River
Closest first, within ~10 miles of Deer River. Listing isn't leaking, and distance isn't exposure.
- Farmers Coop Exchange (old)Underground Storage Tanks · 700 ft
- MDNR Deer RiverUnderground Storage Tanks · 750 ft
- 145N25W36BAC 03Nitrate · 1300 ft
- Essentia Health Deer RiverUnderground Storage Tanks · 1600 ft
- Northern Star CooperativeUnderground Storage Tanks · 1800 ft
- ESSENTIA HEALTH DEER RIVERBrownfields · 1900 ft
- Deer River Bus GarageUnderground Storage Tanks · 1900 ft
- ISD 317 DEER RIVER JR SR HIGH SCHOOLBrownfields · 2000 ft
- DEER RIVER DENTALBrownfields · 2100 ft
- ESSENTIA HEALTH DEER RIVER PHARMACYBrownfields · 2100 ft
- BURGGRAF'S ACE HARDWARE DEER RIVER INCBrownfields · 2400 ft
- DOLLAR GENERAL STORE 18159Brownfields · 2400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Deer River'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 Deer River.
Total Sites
105
within ~10 miles of Deer River
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Deer River
Severity Distribution
within ~10 miles of Deer River
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Deer River
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 Deer River average
Your land is one point inside Deer River
Everything above resolves to Deer River as a whole — one PHZM band and one 28°F frost record, read across 971 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 Deer River Average
Deer River Average
- ●USDA Zones 3b, averaged across Deer River
- ●One soil character for all of Deer River
- ●Frost dates read at Deer River's scale: May 2 to Oct 10
YOUR Parcel
- ✓Your exact zone, not Deer River's 3b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Deer River
Pull a site-specific report for your exact address in Deer River, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Deer River averages can't show:
We read public map data around Deer River — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Deer River average
How we know this about Deer River
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 Deer River’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 Deer River
When does frost risk typically end in Deer River?
The last hard freeze (28°F) in Deer River typically lands around May 2, 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 23.
When is the first frost in Deer River?
The first hard freeze (28°F) in Deer River 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 161 days after the spring freeze cleared.
How long is the growing season in Deer River?
Measured between 28°F hard freezes, Deer River sees about 161 frost-free days — roughly May 2 through Oct 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 23 to Sep 26, about 126 days.
Is the soil safe to grow vegetables in Deer River?
The federal record around Deer River is a meaningful one — 105 documented sites, mostly Underground Storage Tanks entries (46), the nearest Underground Storage Tanks record about 0.1 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 Deer River?
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 Deer River's scale — its 3b band and its 161-day season. Your yard writes its own version of Deer River'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 Deer River’s own scale
6 of the readings below were taken at Deer River's own scale — its own ~161-day season between 28°F freezes, the 971 acres it covers and 105 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Deer River's own USDA hardiness band, zones 3bUSDA PHZM 2023
- Deer River's own 28°F hard-freeze dates, about May 2 and Oct 10 and the ~161-day span between themNOAA 1991–2020 Climate Normals
- 105 documented contamination sites on the federal record near Deer River, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Deer River's boundary and the 971 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 3b and a ~161-day seasonGrowable Ground crop-matching engine
- The ecoregion at Deer River'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 Deer River's 971 acres read through its county's SSURGO summaryfrom Itasca County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Itasca 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 Itasca County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Deer River's 971 acreswhy one lot differs from the next →
- Which side of Deer River you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 971 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Deer River-wide figureread your own land →
More in Minnesota
Wider growing context
What grows across MinnesotaDeer River sits outside our named growing regions, so Minnesota as a whole is its closest context here.
Nearby growing guides