Mackinaw City, Michigan, sits in USDA hardiness zone 5b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Well-matched crops include cabbage, cranberry, lavender, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Mackinaw City, 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 Mackinaw City 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 Mackinaw City — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Mackinaw City — the short answer
Mackinaw City, Michigan: USDA zone 5b, about 189 days between hard freezes, across 2K acres of town.
- USDA zone
- 5b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~189
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K 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 5b is Mackinaw City's average, not your lot's — a low corner or a tree line moves it. Against Mackinaw City's 189-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Mackinaw City
Each reading below is measured for Mackinaw City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMackinaw City runs about 189 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
MeasuredMackinaw City sits in USDA hardiness zone 5b.
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 Mackinaw City is in
Mackinaw City sits in the Northern Lakes and Forests — EPA Level III, inside the wider Northern Forests. That is read at Mackinaw City's own centroid rather than borrowed from Emmet County.
What Grows in Mackinaw City
Every plant below cleared Mackinaw City's own zone 5b and its 189-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Mackinaw City?
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 31; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 3 — 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.
What's on the federal record near Mackinaw City
Closest first, within ~10 miles of Mackinaw City. Listing isn't leaking, and distance isn't exposure.
- Mackinaw City Public SchoolsUnderground Storage Tanks · 0.6 mi
- INTERNATIONAL TRANSMISSION COMPANY LLCBrownfields · 0.8 mi
- Kruegers IncUnderground Storage Tanks · 1.1 mi
- Mackinaw City ShellUnderground Storage Tanks · 1.1 mi
- CONSUMERS ENERGY STRAITS COMBUSTION TURBINE PLANTBrownfields · 1.2 mi
- DTE/MICHCONBrownfields · 1.2 mi
- BLARNEY CASTLE OIL COMPANYBrownfields · 1.2 mi
- Mackinaw City EZ MartUnderground Storage Tanks · 1.2 mi
- Perry Oil - Mackinaw City MobilUnderground Storage Tanks · 1.2 mi
- Total #8802Underground Storage Tanks · 1.2 mi
- Next Door Store #1017Underground Storage Tanks · 1.2 mi
- Bridge City InvestmentUnderground Storage Tanks · 1.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Mackinaw City'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 Mackinaw City.
Total Sites
104
within ~10 miles of Mackinaw City
Risk Level
Moderate
Highest-severity
28 brownfield sites
Sources Checked
within ~10 miles of Mackinaw City
Severity Distribution
within ~10 miles of Mackinaw City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mackinaw City, Underground Storage Tanks runs higher than the national average — 70 sites within ~10 miles of Mackinaw City. That's not a problem with your land — it's information about it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Mackinaw City
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 Mackinaw City average
Your land is one point inside Mackinaw City
Everything above resolves to Mackinaw City as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Mackinaw City Average
Mackinaw City Average
- ●USDA Zones 5b, averaged across Mackinaw City
- ●One soil character for all of Mackinaw City
- ●Frost dates read at Mackinaw City's scale: Apr 28 to Nov 3
YOUR Parcel
- ✓Your exact zone, not Mackinaw City's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Mackinaw City
Pull a site-specific report for your exact address in Mackinaw City, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Mackinaw City averages can't show:
We read public map data around Mackinaw City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Mackinaw City average
How we know this about Mackinaw City
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 Mackinaw City’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 Mackinaw City
When does frost risk typically end in Mackinaw City?
The last hard freeze (28°F) in Mackinaw City typically lands around Apr 28, 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 19.
When is the first frost in Mackinaw City?
The first hard freeze (28°F) in Mackinaw City typically arrives around Nov 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 20, so the watching starts about Oct 4 — about 189 days after the spring freeze cleared.
How long is the growing season in Mackinaw City?
Measured between 28°F hard freezes, Mackinaw City sees about 189 frost-free days — roughly Apr 28 through Nov 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 19 to Oct 20, about 154 days.
Is the soil safe to grow vegetables in Mackinaw City?
The federal record around Mackinaw City shows 104 documented sites, mostly Underground Storage Tanks entries (70), the nearest Underground Storage Tanks record about 0.6 miles 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 Mackinaw City?
From about Oct 4 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 3 (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 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Mackinaw City's scale — its 5b band and its 189-day season. Your yard writes its own version of Mackinaw City'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 Mackinaw City’s own scale
6 of the readings below were taken at Mackinaw City's own scale — its own ~189-day season between 28°F freezes, the 2,204 acres it covers and 104 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Mackinaw City's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Mackinaw City's own 28°F hard-freeze dates, about Apr 28 and Nov 3 and the ~189-day span between themNOAA 1991–2020 Climate Normals
- 104 documented contamination sites on the federal record near Mackinaw City, the closest Underground Storage Tanks record about 0.6 miles out from the town centreFederal environmental registers
- Mackinaw City's boundary and the 2,204 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~189-day seasonGrowable Ground crop-matching engine
- The ecoregion at Mackinaw City's own centroid, the Northern Lakes and ForestsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Mackinaw City's 2,204 acres read through its county's SSURGO summaryfrom Emmet County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Emmet 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 Emmet County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Mackinaw City's 2,204 acreswhy one lot differs from the next →
- Which side of Mackinaw City you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,204 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.6 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 Mackinaw City-wide figureread your own land →
More in Michigan
Wider growing context
What grows across MichiganMackinaw City sits outside our named growing regions, so Michigan as a whole is its closest context here.
Nearby growing guides