Hitterdal, Minnesota, sits in USDA hardiness zone 4a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Growers here do well with cabbage, cranberry, turkish rocket, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Hitterdal, 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 Hitterdal 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 Hitterdal — soil, climate, flood, and parcel records. How we handle your address.
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Hitterdal — the short answer
Hitterdal, Minnesota: USDA zone 4a, about 168 days between hard freezes, across 551 acres of city.
- USDA zone
- 4a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~168
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 551 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 Hitterdal's average, not your lot's — a low corner or a tree line moves it. Against Hitterdal's 168-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Hitterdal
Each reading below is measured for Hitterdal itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHitterdal runs about 168 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
MeasuredHitterdal 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 Hitterdal is in
Hitterdal sits in the Lake Agassiz Plain — EPA Level III, inside the wider Great Plains. That is read at Hitterdal's own centroid rather than borrowed from Clay County.
What Grows in Hitterdal
Every plant below cleared Hitterdal's own zone 4a and its 168-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Hitterdal?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 30; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 27 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 12 — 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 Hitterdal
Closest first, within ~10 miles of Hitterdal. Listing isn't leaking, and distance isn't exposure.
- 141N44W33DDA 03Nitrate · 700 ft
- 643848Nitrate · 1.2 mi
- Pump N More IncUnderground Storage Tanks · 1.5 mi
- 439492Nitrate · 1.8 mi
- Korrell WpaUnderground Storage Tanks · 2.0 mi
- 141N44W22BBD 01Nitrate · 2.8 mi
- 485947Nitrate · 3.7 mi
- 113235Nitrate · 4.0 mi
- At&t Radio Tower - RollagUnderground Storage Tanks · 4.7 mi
- Wahl DrugUnderground Storage Tanks · 4.7 mi
- Former Blossoms Flower And Gift ShopUnderground Storage Tanks · 4.7 mi
- Clay County Hwy Dept RollagUnderground Storage Tanks · 4.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Hitterdal'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 Hitterdal.
Total Sites
118
within ~10 miles of Hitterdal
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Hitterdal
Severity Distribution
within ~10 miles of Hitterdal
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Hitterdal, two things run higher than the national average within ~10 miles of Hitterdal — CAFO (3 sites) and Nitrate (58 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Hitterdal
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 Hitterdal average
Your land is one point inside Hitterdal
Everything above resolves to Hitterdal as a whole — one PHZM band and one 28°F frost record, read across 551 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 Hitterdal Average
Hitterdal Average
- ●USDA Zones 4a, averaged across Hitterdal
- ●One soil character for all of Hitterdal
- ●Frost dates read at Hitterdal's scale: Apr 27 to Oct 12
YOUR Parcel
- ✓Your exact zone, not Hitterdal's 4a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Hitterdal
Pull a site-specific report for your exact address in Hitterdal, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Hitterdal averages can't show:
We read public map data around Hitterdal — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Hitterdal average
How we know this about Hitterdal
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 Hitterdal’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 Hitterdal
When does frost risk typically end in Hitterdal?
The last hard freeze (28°F) in Hitterdal typically lands around Apr 27, 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 18.
When is the first frost in Hitterdal?
The first hard freeze (28°F) in Hitterdal typically arrives around Oct 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 28, so the watching starts about Sep 12 — about 168 days after the spring freeze cleared.
How long is the growing season in Hitterdal?
Measured between 28°F hard freezes, Hitterdal sees about 168 frost-free days — roughly Apr 27 through Oct 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 18 to Sep 28, about 133 days.
Is the soil safe to grow vegetables in Hitterdal?
The federal record around Hitterdal shows 118 documented sites, mostly Nitrate entries (58), the nearest Nitrate record about 0.1 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 Hitterdal?
From about Sep 12 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Hitterdal's scale — its 4a band and its 168-day season. Your yard writes its own version of Hitterdal'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 Hitterdal’s own scale
6 of the readings below were taken at Hitterdal's own scale — its own ~168-day season between 28°F freezes, the 551 acres it covers and 118 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Hitterdal's own USDA hardiness band, zones 4aUSDA PHZM 2023
- Hitterdal's own 28°F hard-freeze dates, about Apr 27 and Oct 12 and the ~168-day span between themNOAA 1991–2020 Climate Normals
- 118 documented contamination sites on the federal record near Hitterdal, the closest Nitrate record about 0.1 miles out from the town centreFederal environmental registers
- Hitterdal's boundary and the 551 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4a and a ~168-day seasonGrowable Ground crop-matching engine
- The ecoregion at Hitterdal's own centroid, the Lake Agassiz PlainUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Hitterdal's 551 acres read through its county's SSURGO summaryfrom Clay County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Clay 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 Clay County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Hitterdal's 551 acreswhy one lot differs from the next →
- Which side of Hitterdal you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 551 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate 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 Hitterdal-wide figureread your own land →
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