Grygla, Minnesota, sits in USDA hardiness zone 3b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
A short list that earns its place here — cabbage, cranberry, turkish rocket, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Grygla, 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 Grygla 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 Grygla — soil, climate, flood, and parcel records. How we handle your address.
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Grygla — the short answer
Grygla, Minnesota: USDA zone 3b, about 153 days between hard freezes, across 370 acres of city.
- USDA zone
- 3b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~153
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 370 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 Grygla's average, not your lot's — a low corner or a tree line moves it. Against Grygla's 153-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Grygla
Each reading below is measured for Grygla itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGrygla runs about 153 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
MeasuredGrygla 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 Grygla is in
Grygla sits in the Lake Agassiz Plain — EPA Level III, inside the wider Great Plains. That is read at Grygla's own centroid rather than borrowed from Marshall County.
What Grows in Grygla
Every plant below cleared Grygla's own zone 3b and its 153-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Grygla?
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 7; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 5 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 5 — 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 Grygla
Closest first, within ~10 miles of Grygla. Listing isn't leaking, and distance isn't exposure.
- ISD 447Brownfields · 1200 ft
- MACHINEWELL INCBrownfields · 1400 ft
- MNDOT GRYGLABrownfields · 2600 ft
- FARMERS UNION OIL COMPANYBrownfields · 0.7 mi
- 529750Nitrate · 5.0 mi
- CLOSED MOLDED INCBrownfields · 5.2 mi
- 156N40W34BAA-2Nitrate · 7.1 mi
- 125714Nitrate · 7.1 mi
- Forestry District OfficeUnderground Storage Tanks · 8.5 mi
- Mndot/truck Station (grygla)Underground Storage Tanks · 8.5 mi
- Grygla School Bus GarageUnderground Storage Tanks · 8.5 mi
- Lobergs StationUnderground Storage Tanks · 8.5 mi
3 more sites are on the record inside the same radius. See them on the map
Measured from Grygla'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 Grygla.
Severity Distribution
within ~10 miles of Grygla
Highest-Severity Sites
Know Before You Grow
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •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.
Check your specific parcel in Grygla
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 Grygla average
Your land is one point inside Grygla
Everything above resolves to Grygla as a whole — one PHZM band and one 28°F frost record, read across 370 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 Grygla Average
Grygla Average
- ●USDA Zones 3b, averaged across Grygla
- ●One soil character for all of Grygla
- ●Frost dates read at Grygla's scale: May 5 to Oct 5
YOUR Parcel
- ✓Your exact zone, not Grygla's 3b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Grygla
Pull a site-specific report for your exact address in Grygla, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Grygla averages can't show:
We read public map data around Grygla — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Grygla average
How we know this about Grygla
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 Grygla’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 Grygla
When does frost risk typically end in Grygla?
The last hard freeze (28°F) in Grygla typically lands around May 5, 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 26.
When is the first frost in Grygla?
The first hard freeze (28°F) in Grygla typically arrives around Oct 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 21, so the watching starts about Sep 5 — about 153 days after the spring freeze cleared.
How long is the growing season in Grygla?
Measured between 28°F hard freezes, Grygla sees about 153 frost-free days — roughly May 5 through Oct 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 26 to Sep 21, about 118 days.
Is the soil safe to grow vegetables in Grygla?
The federal record around Grygla is light — 19 documented sites across the 9 federal source types we checked, mostly Nitrate entries (8), the nearest Brownfields record about 0.2 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Grygla?
From about Sep 5 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Grygla's scale — its 3b band and its 153-day season. Your yard writes its own version of Grygla'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 Grygla’s own scale
6 of the readings below were taken at Grygla's own scale — its own ~153-day season between 28°F freezes, the 370 acres it covers and 19 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Grygla's own USDA hardiness band, zones 3bUSDA PHZM 2023
- Grygla's own 28°F hard-freeze dates, about May 5 and Oct 5 and the ~153-day span between themNOAA 1991–2020 Climate Normals
- 19 documented contamination sites on the federal record near Grygla, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Grygla's boundary and the 370 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 3b and a ~153-day seasonGrowable Ground crop-matching engine
- The ecoregion at Grygla's own centroid, the Lake Agassiz PlainUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Grygla's 370 acres read through its county's SSURGO summaryfrom Marshall County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Marshall 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 Marshall County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Grygla's 370 acreswhy one lot differs from the next →
- Which side of Grygla you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 370 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 Grygla-wide figureread your own land →
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