Kalkaska, 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 Kalkaska, 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 Kalkaska 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 Kalkaska — soil, climate, flood, and parcel records. How we handle your address.
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Kalkaska — the short answer
Kalkaska, Michigan: USDA zone 5a, about 157 days between hard freezes, across 2K acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 9
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 13
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~157
- 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 5a is Kalkaska's average, not your lot's — a low corner or a tree line moves it. Against Kalkaska's 157-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Kalkaska
Each reading below is measured for Kalkaska itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredKalkaska runs about 157 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
MeasuredKalkaska 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 Kalkaska is in
Kalkaska sits in the Northern Lakes and Forests — EPA Level III, inside the wider Northern Forests. That is read at Kalkaska's own centroid rather than borrowed from Kalkaska County.
What Grows in Kalkaska
Every plant below cleared Kalkaska's own zone 5a and its 157-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Kalkaska?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Apr 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 9 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 13 — 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.
What's on the federal record near Kalkaska
Closest first, within ~10 miles of Kalkaska. Listing isn't leaking, and distance isn't exposure.
- Kalkaska Memorial Health CenterUnderground Storage Tanks · 300 ft
- Smeds IncUnderground Storage Tanks · 900 ft
- Evergreen Bible Baptist ChurchUnderground Storage Tanks · 900 ft
- Tom WaltzUnderground Storage Tanks · 900 ft
- At & T Kalkaska, MiUnderground Storage Tanks · 900 ft
- John Palulis/nona MaccartyUnderground Storage Tanks · 900 ft
- Voice Motor Sales Ave.Underground Storage Tanks · 1100 ft
- N.m.c Shop-n-go #180Underground Storage Tanks · 1500 ft
- Bills AmocoUnderground Storage Tanks · 1500 ft
- Dennis HogerheideUnderground Storage Tanks · 1600 ft
- Kalkaska Union 76Underground Storage Tanks · 1600 ft
- Village Of KalkaskaUnderground Storage Tanks · 1800 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Kalkaska'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 Kalkaska.
Total Sites
164
within ~10 miles of Kalkaska
Risk Level
Moderate
Highest-severity
3 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Kalkaska
Severity Distribution
within ~10 miles of Kalkaska
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 Kalkaska
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 Kalkaska average
Your land is one point inside Kalkaska
Everything above resolves to Kalkaska 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 Kalkaska Average
Kalkaska Average
- ●USDA Zones 5a, averaged across Kalkaska
- ●One soil character for all of Kalkaska
- ●Frost dates read at Kalkaska's scale: May 9 to Oct 13
YOUR Parcel
- ✓Your exact zone, not Kalkaska's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Kalkaska
Pull a site-specific report for your exact address in Kalkaska, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Kalkaska averages can't show:
We read public map data around Kalkaska — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Kalkaska average
How we know this about Kalkaska
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 Kalkaska’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 Kalkaska
When does frost risk typically end in Kalkaska?
The last hard freeze (28°F) in Kalkaska typically lands around May 9, 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 30.
When is the first frost in Kalkaska?
The first hard freeze (28°F) in Kalkaska typically arrives around Oct 13, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 29, so the watching starts about Sep 13 — about 157 days after the spring freeze cleared.
How long is the growing season in Kalkaska?
Measured between 28°F hard freezes, Kalkaska sees about 157 frost-free days — roughly May 9 through Oct 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 30 to Sep 29, about 122 days.
Is the soil safe to grow vegetables in Kalkaska?
The federal record around Kalkaska shows 164 documented sites, mostly Underground Storage Tanks entries (92), the nearest Underground Storage Tanks 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 Kalkaska?
From about Sep 13 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 13 (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 13. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Kalkaska's scale — its 5a band and its 157-day season. Your yard writes its own version of Kalkaska'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 Kalkaska’s own scale
6 of the readings below were taken at Kalkaska's own scale — its own ~157-day season between 28°F freezes, the 1,687 acres it covers and 164 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Kalkaska's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Kalkaska's own 28°F hard-freeze dates, about May 9 and Oct 13 and the ~157-day span between themNOAA 1991–2020 Climate Normals
- 164 documented contamination sites on the federal record near Kalkaska, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Kalkaska's boundary and the 1,687 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~157-day seasonGrowable Ground crop-matching engine
- The ecoregion at Kalkaska'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 Kalkaska's 1,687 acres read through its county's SSURGO summaryfrom Kalkaska County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kalkaska 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 Kalkaska County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Kalkaska's 1,687 acreswhy one lot differs from the next →
- Which side of Kalkaska you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,687 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 Kalkaska-wide figureread your own land →