Sleepy Eye, Minnesota, sits in USDA hardiness zone 5a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, cranberry, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Sleepy Eye, 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 Sleepy Eye 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 Sleepy Eye — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Sleepy Eye — the short answer
Sleepy Eye, Minnesota: USDA zone 5a, about 180 days between hard freezes, across 1K acres of city.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 18
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~180
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 1K 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 5a is Sleepy Eye's average, not your lot's — a low corner or a tree line moves it. Against Sleepy Eye's 180-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Sleepy Eye
Each reading below is measured for Sleepy Eye itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSleepy Eye runs about 180 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
MeasuredSleepy Eye sits in USDA hardiness zone 5a.
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 Sleepy Eye is in
Sleepy Eye sits in the Western Corn Belt Plains — EPA Level III, inside the wider Great Plains. That is read at Sleepy Eye's own centroid rather than borrowed from Brown County.
What Grows in Sleepy Eye
Every plant below cleared Sleepy Eye's own zone 5a and its 180-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Sleepy Eye?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 18 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 15 — 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 Sleepy Eye
Closest first, within ~10 miles of Sleepy Eye. Listing isn't leaking, and distance isn't exposure.
- City Of Sleepy Eye GarageUnderground Storage Tanks · 450 ft
- MARK THOMAS CO - 120 PINEBrownfields · 500 ft
- Sleepy Eye Public UtilitiesUnderground Storage Tanks · 500 ft
- SLEEPY EYE PUBLIC UTILITYBrownfields · 550 ft
- J&L PRINTINGBrownfields · 700 ft
- SENSORYEFFECTSBrownfields · 900 ft
- SENSORYEFFECTSToxics Release Inventory · 900 ft
- SLEEPY EYE POLICEBrownfields · 900 ft
- RANDYS FAMILY DRUG AND GIFT INCBrownfields · 950 ft
- Pietrus Foods Inc Produce PlantUnderground Storage Tanks · 1000 ft
- SLEEPY EYE MEDICAL CENTERBrownfields · 1000 ft
- Rich's AmocoUnderground Storage Tanks · 1100 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Sleepy Eye'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 Sleepy Eye.
Total Sites
118
within ~10 miles of Sleepy Eye
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Sleepy Eye
Severity Distribution
within ~10 miles of Sleepy Eye
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Sleepy Eye, CAFO runs higher than the national average — 17 sites within ~10 miles of Sleepy Eye. That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Check your specific parcel in Sleepy Eye
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 Sleepy Eye average
Your land is one point inside Sleepy Eye
Everything above resolves to Sleepy Eye as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Sleepy Eye Average
Sleepy Eye Average
- ●USDA Zones 5a, averaged across Sleepy Eye
- ●One soil character for all of Sleepy Eye
- ●Frost dates read at Sleepy Eye's scale: Apr 18 to Oct 15
YOUR Parcel
- ✓Your exact zone, not Sleepy Eye's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Sleepy Eye
Pull a site-specific report for your exact address in Sleepy Eye, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Sleepy Eye averages can't show:
We read public map data around Sleepy Eye — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Sleepy Eye average
How we know this about Sleepy Eye
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 Sleepy Eye’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 Sleepy Eye
When does frost risk typically end in Sleepy Eye?
The last hard freeze (28°F) in Sleepy Eye typically lands around Apr 18, 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 9.
When is the first frost in Sleepy Eye?
The first hard freeze (28°F) in Sleepy Eye typically arrives around Oct 15, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 1, so the watching starts about Sep 15 — about 180 days after the spring freeze cleared.
How long is the growing season in Sleepy Eye?
Measured between 28°F hard freezes, Sleepy Eye sees about 180 frost-free days — roughly Apr 18 through Oct 15, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 9 to Oct 1, about 145 days.
Is the soil safe to grow vegetables in Sleepy Eye?
The federal record around Sleepy Eye shows 118 documented sites, mostly Underground Storage Tanks entries (51), the nearest Underground Storage Tanks 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 Sleepy Eye?
From about Sep 15 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 15 (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 15. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Sleepy Eye's scale — its 5a band and its 180-day season. Your yard writes its own version of Sleepy Eye'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 Sleepy Eye’s own scale
6 of the readings below were taken at Sleepy Eye's own scale — its own ~180-day season between 28°F freezes, the 1,197 acres it covers and 118 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Sleepy Eye's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Sleepy Eye's own 28°F hard-freeze dates, about Apr 18 and Oct 15 and the ~180-day span between themNOAA 1991–2020 Climate Normals
- 118 documented contamination sites on the federal record near Sleepy Eye, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Sleepy Eye's boundary and the 1,197 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~180-day seasonGrowable Ground crop-matching engine
- The ecoregion at Sleepy Eye's own centroid, the Western Corn Belt PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Sleepy Eye's 1,197 acres read through its county's SSURGO summaryfrom Brown County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Brown 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 Brown County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Sleepy Eye's 1,197 acreswhy one lot differs from the next →
- Which side of Sleepy Eye you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,197 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Sleepy Eye-wide figureread your own land →
More in Minnesota
Wider growing context
What grows across MinnesotaSleepy Eye sits outside our named growing regions, so Minnesota as a whole is its closest context here.