Eaton County, in Michigan, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Growers here do well with cabbage, hazelnut, lavender, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Eaton County holds more than one microclimate.
Soils and elevations shift across Eaton County, so your frost dates and drainage aren't the county average. 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 Eaton County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Eaton County — the short answer
Eaton County, Michigan: USDA zone 6a, about 187 days between hard freezes, across 368K acres.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 19
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Oct 23
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~187
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 368K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 6a is Eaton County's average, not your lot's — a low corner or a tree line moves it. Against Eaton County's 187-day season, see what your own ground reads.
Heat in Eaton County
Across a year, Eaton County accumulates about 2,363 growing degree days above 50°F, about 263 more than the middle Michigan county — ahead of 54 of Michigan’s 83 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Eaton County
Across Eaton County, the ground is predominantly Alfisols, where Marlette, Capac, and Conover are the most extensive named soil series. The soil is generally somewhat poorly drained with a loam surface. Topsoil pH runs about 6.1–6.6, slightly acidic. Rainfall drains through hydrologic group C/D soils.
Soil order
Alfisols
Drainage
Somewhat poorly drained
Prime farmland
27%
Hydric soils
25%
Soil still varies lot by lot — soil types explained.
How the ground varies across Eaton County
The USDA soil survey maps 32% of Eaton County as somewhat poorly drained — but another 67% drains differently: 24% well drained, 19% moderately well drained.
Marlette is the most extensive named soil at 27% of mapped acres, then Capac (10%) and Conover (10%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Eaton County
Each reading below is measured for Eaton County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Eaton County are somewhat poorly drained, in hydrologic group C/D — ground that sheds water slowly.
Beds can stay saturated for days after heavy rain, and the roots of most vegetables, berries, and fruit trees suffocate or rot in soil that never drains.
Raised beds or mounded rows lift roots above the wet zone; choose water-tolerant crops for the lowest spots.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Eaton County runs about pH 6.1–6.6, close to neutral.
This is the range most vegetables prefer — one correction you probably do not have to make, which is genuinely good news for a new bed.
Keep it there with compost rather than lime or sulfur, and only amend if your own soil test says otherwise.
USDA NRCS SSURGO
Season length
MeasuredEaton County runs about 187 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
MeasuredEaton County sits in USDA hardiness zone 6a.
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 Eaton County is in
Eaton County sits in the Southern Michigan/Northern Indiana Drift Plains — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Eaton County
We scored all 1,086 plants against Eaton County's own USDA zone 6a and its own 187-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Michigan profile.
Is it too late to plant in Eaton County?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 22; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 19 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 23 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
Documented around Eaton County
Survey cells within 31 miles of Eaton County checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 59 miles off. What to watch for.
- Japanese beetle1 documented records
- monarch butterfly26 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Eaton County
USGS estimates 114,632 lb of Glyphosate on Eaton County farmland in 2019, its largest by weight, ahead of Atrazine (29,715 lb) and Metolachlor & Metolachlor-s (22,590 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Eaton County — and how to grow with it.
We checked the federal record across Eaton County — 659 documented sites across 6 of the 9 source types we track.
The most significant on record: 4 Superfund sites. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Eaton County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Eaton County
Closest first, across Eaton County. Listing isn't leaking, and distance isn't exposure.
- Eaton County Sheriff DeptUnderground Storage Tanks · 0.6 mi
- ENOVA PREMIER OF MICHIGAN LLCBrownfields · 0.7 mi
- Eaton County Medical CareUnderground Storage Tanks · 0.7 mi
- PRO-TEC EQUIPMENTBrownfields · 0.8 mi
- Charlotte Service CenterUnderground Storage Tanks · 0.8 mi
- LINN PRODUCTS INCToxics Release Inventory · 0.8 mi
- LINN PRODUCTS INCBrownfields · 0.8 mi
- OWENS-BROCKWAY GLASS CONTAINER INC.Toxics Release Inventory · 0.9 mi
- Owens BrockwayUnderground Storage Tanks · 0.9 mi
- CHARLOTTE, CITY OFPFAS · 1.1 mi
- L.l. Johnson Lbr. Mfg. CoUnderground Storage Tanks · 1.4 mi
- LEAS AUTO BODYBrownfields · 1.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Eaton County'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 Eaton County.
Sources Checked
across Eaton County
Severity Distribution
across Eaton County
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 Eaton County
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 Eaton County average
Your land is one point inside Eaton County
Everything above resolves to Eaton County as a whole — one PHZM band and one county frost record, read across 368K 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 county 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 county average.
Your Lot vs the Eaton County Average
Eaton County Average
- ●USDA Zones 6a, averaged across Eaton County
- ●One soil character for all of Eaton County
- ●Frost dates read at Eaton County's scale: Apr 19 to Oct 23
YOUR Parcel
- ✓Your exact zone, not Eaton County's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Eaton County
Pull a site-specific report for your exact address in Eaton County, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Eaton County averages can't show:
We read public map data around Eaton County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Eaton County average
How we know this about Eaton County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Eaton County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Eaton County
When does frost risk typically end in Eaton County?
The last hard freeze (28°F) in Eaton County typically lands around Apr 19, 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 10.
How long is the growing season in Eaton County?
Measured between 28°F hard freezes, Eaton County sees about 187 frost-free days — roughly Apr 19 through Oct 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 10 to Oct 9, about 152 days.
Is the soil safe to grow vegetables in Eaton County?
The federal record around Eaton County is a meaningful one — 659 documented sites, mostly Underground Storage Tanks entries (322), the nearest Underground Storage Tanks record about 0.6 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.
Everything above is measured at Eaton County's scale — its 6a band and its 187-day season. Your yard writes its own version of Eaton County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Michigan's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Eaton County’s own scale
9 of the readings below were taken at Eaton County's own scale — its own ~187-day span between 28°F freezes, the 3 most extensive soil series mapped here and 659 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Eaton County's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Eaton County's own 28°F hard-freeze dates and its ~187-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Eaton CountyUSDA NRCS SSURGO
- 659 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 0.6 miles outFederal environmental registers
- Eaton County's boundary and the 368,134 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~187-day seasonGrowable Ground crop-matching engine
- Eaton County sitting wholly inside the Southern Michigan/Northern Indiana Drift PlainsUS EPA Level III Ecoregions
- Open occurrence records documented in Eaton County for 2 tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Eaton County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Michigan grower plans around — written at state scale, so they stay on the state guidefrom Michigan
What this page can’t tell you
- How the season shifts across Eaton County — the ~187 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Eaton County's 368,134 acreswhy one lot differs from the next →
- Which of those 659 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Eaton Countyread your own land →