Onaway, Michigan, sits in USDA hardiness zone 5a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
On paper, cabbage, cranberry, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Onaway, 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 Onaway 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 Onaway — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Onaway — the short answer
Onaway, Michigan: USDA zone 5a, about 153 days between hard freezes, across 1K acres of city.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~153
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 1K 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 5a is Onaway's average, not your lot's — a low corner or a tree line moves it. Against Onaway's 153-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Onaway
Each reading below is measured for Onaway itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredOnaway runs about 153 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
MeasuredOnaway sits in USDA hardiness zone 5a.
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 Onaway is in
Onaway sits in the Northern Lakes and Forests — EPA Level III, inside the wider Northern Forests. That is read at Onaway's own centroid rather than borrowed from Presque Isle County.
What Grows in Onaway
Every plant below cleared Onaway's own zone 5a and its 153-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Onaway?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Apr 14; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 12 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 12 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Onaway
Closest first, within ~10 miles of Onaway. Listing isn't leaking, and distance isn't exposure.
- GREEN OFFICE SOLUTIONSBrownfields · 350 ft
- Onaway State ParkUnderground Storage Tanks · 1000 ft
- Onaway Field OfficeUnderground Storage Tanks · 1000 ft
- Vances Service CenterUnderground Storage Tanks · 1100 ft
- Norb's Body ShopUnderground Storage Tanks · 1100 ft
- Onaway Tire & SunocoUnderground Storage Tanks · 1100 ft
- ONAWAY AUTO BODYBrownfields · 1200 ft
- NORBS AUTO BODYBrownfields · 1200 ft
- Onaway Tax ServiceUnderground Storage Tanks · 1400 ft
- City Of OnawayUnderground Storage Tanks · 1700 ft
- KOLASA KUSTOMS INCBrownfields · 1900 ft
- PAINTER PETROLEUM INCORPORATEDBrownfields · 2400 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Onaway'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 Onaway.
Severity Distribution
within ~10 miles of Onaway
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Onaway, Underground Storage Tanks runs higher than the national average — 33 sites within ~10 miles of Onaway. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Onaway
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 Onaway average
Your land is one point inside Onaway
Everything above resolves to Onaway as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Onaway Average
Onaway Average
- ●USDA Zones 5a, averaged across Onaway
- ●One soil character for all of Onaway
- ●Frost dates read at Onaway's scale: May 12 to Oct 12
YOUR Parcel
- ✓Your exact zone, not Onaway's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Onaway
Pull a site-specific report for your exact address in Onaway, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Onaway averages can't show:
We read public map data around Onaway — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Onaway average
How we know this about Onaway
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 Onaway’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 Onaway
When does frost risk typically end in Onaway?
The last hard freeze (28°F) in Onaway typically lands around May 12, 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 Jun 2.
When is the first frost in Onaway?
The first hard freeze (28°F) in Onaway typically arrives around Oct 12, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 28, so the watching starts about Sep 12 — about 153 days after the spring freeze cleared.
How long is the growing season in Onaway?
Measured between 28°F hard freezes, Onaway sees about 153 frost-free days — roughly May 12 through Oct 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 2 to Sep 28, about 118 days.
Is the soil safe to grow vegetables in Onaway?
The federal record around Onaway shows 52 documented sites, mostly Underground Storage Tanks entries (33), the nearest Brownfields record under a tenth of a mile 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 Onaway?
From about Sep 12 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 12 (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 12. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Onaway's scale — its 5a band and its 153-day season. Your yard writes its own version of Onaway'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 Onaway’s own scale
6 of the readings below were taken at Onaway's own scale — its own ~153-day season between 28°F freezes, the 1,043 acres it covers and 52 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Onaway's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Onaway's own 28°F hard-freeze dates, about May 12 and Oct 12 and the ~153-day span between themNOAA 1991–2020 Climate Normals
- 52 documented contamination sites on the federal record near Onaway, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Onaway's boundary and the 1,043 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~153-day seasonGrowable Ground crop-matching engine
- The ecoregion at Onaway'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 Onaway's 1,043 acres read through its county's SSURGO summaryfrom Presque Isle County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Presque Isle 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 Presque Isle County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Onaway's 1,043 acreswhy one lot differs from the next →
- Which side of Onaway you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,043 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Onaway-wide figureread your own land →
More in Michigan
Wider growing context
What grows across MichiganOnaway sits outside our named growing regions, so Michigan as a whole is its closest context here.
Nearby growing guides