Marysville, Michigan, sits in USDA hardiness zone 6a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Crops well matched to these conditions include cabbage, hazelnut, lavender, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Marysville, 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 Marysville 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 Marysville — soil, climate, flood, and parcel records. How we handle your address.
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Marysville — the short answer
Marysville, Michigan: USDA zone 6a, about 194 days between hard freezes, across 5K acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~194
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 5K 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 Marysville's average, not your lot's — a low corner or a tree line moves it. Against Marysville's 194-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Marysville
Each reading below is measured for Marysville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMarysville runs about 194 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
MeasuredMarysville 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 Marysville is in
Marysville sits in the Huron/Erie Lake Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Marysville's own centroid rather than borrowed from St. Clair County.
What Grows in Marysville
Every plant below cleared Marysville's own zone 6a and its 194-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Marysville?
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 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 30 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.
Documented around Marysville
Survey cells within 31 miles of Marysville checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 46 miles off. What to watch for.
What's on the federal record near Marysville
Closest first, within ~10 miles of Marysville. Listing isn't leaking, and distance isn't exposure.
- Marysville School Bus, IncUnderground Storage Tanks · 400 ft
- MARYSVILLE SCHOOLSBrownfields · 500 ft
- GERBER COLLISION & GLASSBrownfields · 600 ft
- Advanced CollisionUnderground Storage Tanks · 600 ft
- MARYSVILLE, CITY OFPFAS · 650 ft
- Paul Revard BuildingUnderground Storage Tanks · 700 ft
- Carpas ServiceUnderground Storage Tanks · 800 ft
- MARYSVILLE MARINE DISTRUBUTORSBrownfields · 1000 ft
- SOULE REAL ESTATE LLCBrownfields · 1100 ft
- IS Real Estate LLCUnderground Storage Tanks · 1200 ft
- Eagens ServiceUnderground Storage Tanks · 1200 ft
- Former Location Of SoutheasternUnderground Storage Tanks · 1200 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Marysville'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 Marysville.
Total Sites
621
within ~10 miles of Marysville
Risk Level
Elevated
Highest-severity
7 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Marysville
Severity Distribution
within ~10 miles of Marysville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Marysville, two things run higher than the national average within ~10 miles of Marysville — Toxics Release Inventory (55 sites) and PFAS (7 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Marysville
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 Marysville average
Your land is one point inside Marysville
Everything above resolves to Marysville as a whole — one PHZM band and one 28°F frost record, read across 5K 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 Marysville Average
Marysville Average
- ●USDA Zones 6a, averaged across Marysville
- ●One soil character for all of Marysville
- ●Frost dates read at Marysville's scale: Apr 19 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Marysville's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Marysville
Pull a site-specific report for your exact address in Marysville, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Marysville averages can't show:
We read public map data around Marysville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Marysville average
How we know this about Marysville
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 Marysville’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 Marysville
When does frost risk typically end in Marysville?
The last hard freeze (28°F) in Marysville 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.
When is the first frost in Marysville?
The first hard freeze (28°F) in Marysville typically arrives around Oct 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 16, so the watching starts about Sep 30 — about 194 days after the spring freeze cleared.
How long is the growing season in Marysville?
Measured between 28°F hard freezes, Marysville sees about 194 frost-free days — roughly Apr 19 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 10 to Oct 16, about 159 days.
Is the soil safe to grow vegetables in Marysville?
The federal record around Marysville is a meaningful one — 621 documented sites, mostly Brownfields entries (276), the nearest Underground Storage Tanks record under a tenth of a mile 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 Marysville?
From about Sep 30 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 30 (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 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Marysville's scale — its 6a band and its 194-day season. Your yard writes its own version of Marysville'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 Marysville’s own scale
7 of the readings below were taken at Marysville's own scale — its own ~194-day season between 28°F freezes, the 4,690 acres it covers and 621 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Marysville's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Marysville's own 28°F hard-freeze dates, about Apr 19 and Oct 30 and the ~194-day span between themNOAA 1991–2020 Climate Normals
- 621 documented contamination sites on the federal record near Marysville, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Marysville's boundary and the 4,690 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~194-day seasonGrowable Ground crop-matching engine
- The ecoregion at Marysville's own centroid, the Huron/Erie Lake PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Marysville 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 Marysville's 4,690 acres read through its county's SSURGO summaryfrom St. Clair County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom St. Clair 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 St. Clair County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Marysville's 4,690 acreswhy one lot differs from the next →
- Which side of Marysville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,690 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 Marysville-wide figureread your own land →
More in Michigan
Wider growing context
What grows across MichiganMarysville sits outside our named growing regions, so Michigan as a whole is its closest context here.
Nearby growing guides