Warroad, Minnesota, sits in USDA hardiness zone 3b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Expect cabbage, cranberry, turkish rocket, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Warroad, 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 Warroad 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 Warroad — soil, climate, flood, and parcel records. How we handle your address.
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Warroad — the short answer
Warroad, Minnesota: USDA zone 3b, about 156 days between hard freezes, across 2K acres of city.
- USDA zone
- 3b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 7
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~156
- 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 3b is Warroad's average, not your lot's — a low corner or a tree line moves it. Against Warroad's 156-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Warroad
Each reading below is measured for Warroad itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredWarroad runs about 156 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
MeasuredWarroad 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 Warroad is in
Warroad sits in the Northern Minnesota Wetlands — EPA Level III, inside the wider Northern Forests. That is read at Warroad's own centroid rather than borrowed from Roseau County.
What Grows in Warroad
Every plant below cleared Warroad's own zone 3b and its 156-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Warroad?
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 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 7 — 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 Warroad
Closest first, within ~10 miles of Warroad. Listing isn't leaking, and distance isn't exposure.
- NEIGHBORS CHEVROLETBrownfields · 1100 ft
- PUBLIC SAFETY BUILDINGBrownfields · 1900 ft
- Holiday Stationstore #342Underground Storage Tanks · 1900 ft
- MARVIN WINDOWS & DOORSToxics Release Inventory · 1900 ft
- MARVIN WINDOWS AND DOORSBrownfields · 1900 ft
- ISD 690 WARROAD HIGH SCHOOLBrownfields · 0.5 mi
- MERC - WARROADBrownfields · 0.8 mi
- DOLLAR GENERAL #23730Brownfields · 0.8 mi
- ALTRU CLINIC - WARROADBrownfields · 0.8 mi
- WARROAD SENIOR LIVING CENTERBrownfields · 0.9 mi
- Johnson Conoco Shop & GoUnderground Storage Tanks · 0.9 mi
- WARROAD MOTORS INCBrownfields · 1.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Warroad'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 Warroad.
Total Sites
62
within ~10 miles of Warroad
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Warroad
Severity Distribution
within ~10 miles of Warroad
Highest-Severity Sites
Know Before You Grow
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Warroad
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 Warroad average
Your land is one point inside Warroad
Everything above resolves to Warroad 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 Warroad Average
Warroad Average
- ●USDA Zones 3b, averaged across Warroad
- ●One soil character for all of Warroad
- ●Frost dates read at Warroad's scale: May 4 to Oct 7
YOUR Parcel
- ✓Your exact zone, not Warroad's 3b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Warroad
Pull a site-specific report for your exact address in Warroad, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Warroad averages can't show:
We read public map data around Warroad — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Warroad average
How we know this about Warroad
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 Warroad’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 Warroad
When does frost risk typically end in Warroad?
The last hard freeze (28°F) in Warroad typically lands around May 4, 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 25.
When is the first frost in Warroad?
The first hard freeze (28°F) in Warroad typically arrives around Oct 7, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 23, so the watching starts about Sep 7 — about 156 days after the spring freeze cleared.
How long is the growing season in Warroad?
Measured between 28°F hard freezes, Warroad sees about 156 frost-free days — roughly May 4 through Oct 7, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 25 to Sep 23, about 121 days.
Is the soil safe to grow vegetables in Warroad?
The federal record around Warroad shows 62 documented sites, mostly Brownfields entries (28), the nearest Brownfields record about 0.2 miles 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 Warroad?
From about Sep 7 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 7 (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 7. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Warroad's scale — its 3b band and its 156-day season. Your yard writes its own version of Warroad'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 Warroad’s own scale
6 of the readings below were taken at Warroad's own scale — its own ~156-day season between 28°F freezes, the 2,095 acres it covers and 62 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Warroad's own USDA hardiness band, zones 3bUSDA PHZM 2023
- Warroad's own 28°F hard-freeze dates, about May 4 and Oct 7 and the ~156-day span between themNOAA 1991–2020 Climate Normals
- 62 documented contamination sites on the federal record near Warroad, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Warroad's boundary and the 2,095 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 3b and a ~156-day seasonGrowable Ground crop-matching engine
- The ecoregion at Warroad's own centroid, the Northern Minnesota WetlandsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Warroad's 2,095 acres read through its county's SSURGO summaryfrom Roseau County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Roseau 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 Roseau County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Warroad's 2,095 acreswhy one lot differs from the next →
- Which side of Warroad you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,095 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Warroad-wide figureread your own land →
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