Olivet, Michigan, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
The conditions favor cabbage, hazelnut, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in Olivet, 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 Olivet 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 Olivet — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Olivet — the short answer
Olivet, Michigan: USDA zone 6a, about 186 days between hard freezes, across 653 acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 24
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~186
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 653 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 6a is Olivet's average, not your lot's — a low corner or a tree line moves it. Against Olivet's 186-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Olivet
Each reading below is measured for Olivet itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredOlivet runs about 186 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
MeasuredOlivet 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 Olivet is in
Olivet sits in the Southern Michigan/Northern Indiana Drift Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Olivet's own centroid rather than borrowed from Eaton County.
What Grows in Olivet
Every plant below cleared Olivet's own zone 6a and its 186-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Olivet?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 24; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 24 — 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 Olivet
Survey cells within 31 miles of Olivet checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 49 miles off. What to watch for.
What's on the federal record near Olivet
Closest first, within ~10 miles of Olivet. Listing isn't leaking, and distance isn't exposure.
- OLIVET COLLEGEBrownfields · 1600 ft
- Olivet CollegeUnderground Storage Tanks · 2400 ft
- Maintenance BldgUnderground Storage Tanks · 2400 ft
- Tinku IncUnderground Storage Tanks · 2500 ft
- Deano's Party Store IncUnderground Storage Tanks · 2500 ft
- PRECISION COLLISION LLCBrownfields · 2600 ft
- PEARSON'S PITBrownfields · 2600 ft
- Baker Oil Co IncUnderground Storage Tanks · 2600 ft
- 01N 05W 29BBAB 01Nitrate · 0.5 mi
- Double Nickel Party Store IncUnderground Storage Tanks · 0.5 mi
- 01N 05W 29DCA 01Nitrate · 0.5 mi
- Charlene MooreUnderground Storage Tanks · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Olivet'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 Olivet.
Total Sites
145
within ~10 miles of Olivet
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Olivet
Severity Distribution
within ~10 miles of Olivet
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 Olivet
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 Olivet average
Your land is one point inside Olivet
Everything above resolves to Olivet as a whole — one PHZM band and one 28°F frost record, read across 653 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 Olivet Average
Olivet Average
- ●USDA Zones 6a, averaged across Olivet
- ●One soil character for all of Olivet
- ●Frost dates read at Olivet's scale: Apr 21 to Oct 24
YOUR Parcel
- ✓Your exact zone, not Olivet's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Olivet
Pull a site-specific report for your exact address in Olivet, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Olivet averages can't show:
We read public map data around Olivet — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Olivet average
How we know this about Olivet
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 Olivet’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 Olivet
When does frost risk typically end in Olivet?
The last hard freeze (28°F) in Olivet typically lands around Apr 21, 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 12.
When is the first frost in Olivet?
The first hard freeze (28°F) in Olivet typically arrives around Oct 24, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 10, so the watching starts about Sep 24 — about 186 days after the spring freeze cleared.
How long is the growing season in Olivet?
Measured between 28°F hard freezes, Olivet sees about 186 frost-free days — roughly Apr 21 through Oct 24, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 12 to Oct 10, about 151 days.
Is the soil safe to grow vegetables in Olivet?
The federal record around Olivet is a meaningful one — 145 documented sites, mostly Underground Storage Tanks entries (74), the nearest Brownfields record about 0.3 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.
How do I protect my plants from frost in Olivet?
From about Sep 24 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 24 (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 24. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Olivet's scale — its 6a band and its 186-day season. Your yard writes its own version of Olivet'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 Olivet’s own scale
7 of the readings below were taken at Olivet's own scale — its own ~186-day season between 28°F freezes, the 653 acres it covers and 145 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Olivet's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Olivet's own 28°F hard-freeze dates, about Apr 21 and Oct 24 and the ~186-day span between themNOAA 1991–2020 Climate Normals
- 145 documented contamination sites on the federal record near Olivet, the closest Brownfields record about 0.3 miles out from the town centreFederal environmental registers
- Olivet's boundary and the 653 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~186-day seasonGrowable Ground crop-matching engine
- The ecoregion at Olivet's own centroid, the Southern Michigan/Northern Indiana Drift PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Olivet checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Olivet's 653 acres read through its county's SSURGO summaryfrom Eaton County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Eaton County
- The growing challenges every Michigan grower plans around — written at state scale, so they stay on the state guidefrom Michigan
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Eaton County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Olivet's 653 acreswhy one lot differs from the next →
- Which side of Olivet you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 653 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.3 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 Olivet-wide figureread your own land →
More in Michigan
Wider growing context
What grows across MichiganOlivet sits outside our named growing regions, so Michigan as a whole is its closest context here.
Nearby growing guides