Grand River, Ohio, sits in USDA hardiness zone 7a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Reliable performers under these conditions include cabbage, hazelnut, california poppy, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Grand River, 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 Grand River 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 Grand River — soil, climate, flood, and parcel records. How we handle your address.
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Grand River — the short answer
Grand River, Ohio: USDA zone 7a, about 236 days between hard freezes, across 376 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 23
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~236
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 376 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 7a is Grand River's average, not your lot's — a low corner or a tree line moves it. Against Grand River's 236-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Grand River
Each reading below is measured for Grand River itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredGrand River runs about 236 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredGrand River sits in USDA hardiness zone 7a.
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 Grand River is in
Grand River sits in the Eastern Great Lakes Lowlands — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Grand River's own centroid rather than borrowed from Lake County.
What Grows in Grand River
Every plant below cleared Grand River's own zone 7a and its 236-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Grand River?
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 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 23 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Grand River
Spotted lanternfly documented 19 miles from Grand River, first recorded 2023. What to watch for.
What's on the federal record near Grand River
Closest first, within ~10 miles of Grand River. Listing isn't leaking, and distance isn't exposure.
- OHIO LIFT TRUCKBrownfields · 700 ft
- GRAND RIVER MARINE, INC.Underground Storage Tanks · 1200 ft
- KONGSBERG ACTUATION SYSTEMS II LLCBrownfields · 1200 ft
- NAVSTAR MARINE CO.Toxics Release Inventory · 1900 ft
- ISG WARREN INCBrownfields · 2300 ft
- STONECO - GRAND RIVERBrownfields · 2400 ft
- CARMEUSE LIME, INC - GRAND RIVER OPERATIONS (0243030257)Toxics Release Inventory · 2500 ft
- NAT FARINACCI & SON, INC.Underground Storage Tanks · 0.6 mi
- RUTHERFORD'S LANDINGUnderground Storage Tanks · 0.6 mi
- CITY OF GRAND RIVERUnderground Storage Tanks · 0.6 mi
- VACANTUnderground Storage Tanks · 0.6 mi
- OSBORNE CONCRETE STONEUnderground Storage Tanks · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Grand River'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 Grand River.
Total Sites
641
within ~10 miles of Grand River
Risk Level
Elevated
Highest-severity
8 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Grand River
Severity Distribution
within ~10 miles of Grand River
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Grand River, two things run higher than the national average within ~10 miles of Grand River — Toxics Release Inventory (81 sites) and Superfund (8 sites). That's not a problem with your land — it's information about it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Grand River
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 Grand River average
Your land is one point inside Grand River
Everything above resolves to Grand River as a whole — one PHZM band and one 28°F frost record, read across 376 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 town 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 Grand River Average
Grand River Average
- ●USDA Zones 7a, averaged across Grand River
- ●One soil character for all of Grand River
- ●Frost dates read at Grand River's scale: Apr 1 to Nov 23
YOUR Parcel
- ✓Your exact zone, not Grand River's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Grand River
Pull a site-specific report for your exact address in Grand River, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Grand River averages can't show:
We read public map data around Grand River — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Grand River average
How we know this about Grand River
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this town’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Grand River’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 town grain anywhere on this page — there is no town-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 Grand River
When does frost risk typically end in Grand River?
The last hard freeze (28°F) in Grand River typically lands around Apr 1, 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 Apr 22.
When is the first frost in Grand River?
The first hard freeze (28°F) in Grand River typically arrives around Nov 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 9, so the watching starts about Oct 24 — about 236 days after the spring freeze cleared.
How long is the growing season in Grand River?
Measured between 28°F hard freezes, Grand River sees about 236 frost-free days — roughly Apr 1 through Nov 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 22 to Nov 9, about 201 days.
Is the soil safe to grow vegetables in Grand River?
The federal record around Grand River is a meaningful one — 641 documented sites, mostly Underground Storage Tanks entries (274), the nearest Brownfields record about 0.1 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 Grand River?
From about Oct 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 Nov 23 (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 Nov 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Grand River's scale — its 7a band and its 236-day season. Your yard writes its own version of Grand River'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 Grand River’s own scale
7 of the readings below were taken at Grand River's own scale — its own ~236-day season between 28°F freezes, the 376 acres it covers and 641 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Grand River's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Grand River's own 28°F hard-freeze dates, about Apr 1 and Nov 23 and the ~236-day span between themNOAA 1991–2020 Climate Normals
- 641 documented contamination sites on the federal record near Grand River, the closest Brownfields record about 0.1 miles out from the town centreFederal environmental registers
- Grand River's boundary and the 376 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~236-day seasonGrowable Ground crop-matching engine
- The ecoregion at Grand River's own centroid, the Eastern Great Lakes LowlandsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Grand Riverlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Grand River's 376 acres read through its county's SSURGO summaryfrom Lake County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Lake County
- The growing challenges every Ohio grower plans around — written at state scale, so they stay on the state guidefrom Ohio
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Lake County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Grand River's 376 acreswhy one lot differs from the next →
- Which side of Grand River you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 376 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Grand River-wide figureread your own land →