Sturgis, Michigan, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Growers here do well with cabbage, hazelnut, lavender, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Sturgis, 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 Sturgis 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 Sturgis — soil, climate, flood, and parcel records. How we handle your address.
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Sturgis — the short answer
Sturgis, Michigan: USDA zone 6a, about 198 days between hard freezes, across 4K acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 15
- 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
- ~198
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 4K 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 Sturgis's average, not your lot's — a low corner or a tree line moves it. Against Sturgis's 198-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Sturgis
Each reading below is measured for Sturgis itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSturgis runs about 198 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
MeasuredSturgis 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 Sturgis is in
Sturgis sits in the Southern Michigan/Northern Indiana Drift Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Sturgis's own centroid rather than borrowed from St. Joseph County.
What Grows in Sturgis
Every plant below cleared Sturgis's own zone 6a and its 198-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Sturgis?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 18; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 15 (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. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
Documented around Sturgis
Spotted lanternfly documented 17 miles from Sturgis, first recorded 2023. What to watch for.
What's on the federal record near Sturgis
Closest first, within ~10 miles of Sturgis. Listing isn't leaking, and distance isn't exposure.
- STURGIS HOUSING COMMISIONBrownfields · 350 ft
- PICTURE THATBrownfields · 400 ft
- Gte Tower SiteUnderground Storage Tanks · 500 ft
- Oaklawn CemeteryUnderground Storage Tanks · 800 ft
- MILLER BROTHERS STANDARD SERVICEBrownfields · 800 ft
- Miller Brothers Standard ServiceUnderground Storage Tanks · 800 ft
- LUDDERS CLEANERSBrownfields · 850 ft
- Sturgis Journal, IncUnderground Storage Tanks · 850 ft
- Former Auto Parts StoreUnderground Storage Tanks · 1100 ft
- One Bay BuildingUnderground Storage Tanks · 1100 ft
- Sturgis BuildingUnderground Storage Tanks · 1100 ft
- Cheker #7451Underground Storage Tanks · 1100 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Sturgis'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 Sturgis.
Sources Checked
within ~10 miles of Sturgis
Severity Distribution
within ~10 miles of Sturgis
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Sturgis, Toxics Release Inventory runs higher than the national average — 19 sites within ~10 miles of Sturgis. 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.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Sturgis
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 Sturgis average
Your land is one point inside Sturgis
Everything above resolves to Sturgis as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Sturgis Average
Sturgis Average
- ●USDA Zones 6a, averaged across Sturgis
- ●One soil character for all of Sturgis
- ●Frost dates read at Sturgis's scale: Apr 15 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Sturgis's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Sturgis
Pull a site-specific report for your exact address in Sturgis, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Sturgis averages can't show:
We read public map data around Sturgis — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Sturgis average
How we know this about Sturgis
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 Sturgis’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 Sturgis
When does frost risk typically end in Sturgis?
The last hard freeze (28°F) in Sturgis typically lands around Apr 15, 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 6.
When is the first frost in Sturgis?
The first hard freeze (28°F) in Sturgis 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 198 days after the spring freeze cleared.
How long is the growing season in Sturgis?
Measured between 28°F hard freezes, Sturgis sees about 198 frost-free days — roughly Apr 15 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 6 to Oct 16, about 163 days.
Is the soil safe to grow vegetables in Sturgis?
The federal record around Sturgis is a meaningful one — 251 documented sites, mostly Underground Storage Tanks entries (142), the nearest Brownfields 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 Sturgis?
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 Sturgis's scale — its 6a band and its 198-day season. Your yard writes its own version of Sturgis'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 Sturgis’s own scale
7 of the readings below were taken at Sturgis's own scale — its own ~198-day season between 28°F freezes, the 4,449 acres it covers and 251 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Sturgis's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Sturgis's own 28°F hard-freeze dates, about Apr 15 and Oct 30 and the ~198-day span between themNOAA 1991–2020 Climate Normals
- 251 documented contamination sites on the federal record near Sturgis, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Sturgis's boundary and the 4,449 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~198-day seasonGrowable Ground crop-matching engine
- The ecoregion at Sturgis's own centroid, the Southern Michigan/Northern Indiana Drift PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Sturgislydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Sturgis's 4,449 acres read through its county's SSURGO summaryfrom St. Joseph County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom St. Joseph 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. Joseph County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Sturgis's 4,449 acreswhy one lot differs from the next →
- Which side of Sturgis you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,449 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 Sturgis-wide figureread your own land →
More in Michigan
Wider growing context
What grows across MichiganSturgis sits outside our named growing regions, so Michigan as a whole is its closest context here.
Nearby growing guides