Millburg, Michigan, sits in USDA hardiness zone 6b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
A short list that earns its place here — cabbage, hazelnut, lavender, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Millburg, 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 Millburg 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 Millburg — soil, climate, flood, and parcel records. How we handle your address.
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Millburg — the short answer
Millburg, Michigan: USDA zone 6b, about 197 days between hard freezes, across 1K acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~197
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town 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 6b is Millburg's average, not your lot's — a low corner or a tree line moves it. Against Millburg's 197-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Millburg
Each reading below is measured for Millburg itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMillburg runs about 197 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
MeasuredMillburg sits in USDA hardiness zone 6b.
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 Millburg is in
Millburg sits in the Southern Michigan/Northern Indiana Drift Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Millburg's own centroid rather than borrowed from Berrien County.
What Grows in Millburg
Every plant below cleared Millburg's own zone 6b and its 197-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Millburg?
Usually not — gardeners here simply switch what goes in the ground as the season moves. 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 Nov 2 — 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 Millburg
Survey cells within 31 miles of Millburg checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 34 miles off. What to watch for.
What's on the federal record near Millburg
Closest first, within ~10 miles of Millburg. Listing isn't leaking, and distance isn't exposure.
- Better Building ProductsUnderground Storage Tanks · 1400 ft
- BETTER BUILDING PRODUCTSBrownfields · 1400 ft
- Former City Dpw FacilityUnderground Storage Tanks · 1500 ft
- Louis Gelder & Sons CoUnderground Storage Tanks · 1500 ft
- JERRYS COLLISION REPAIR INCBrownfields · 1700 ft
- Millburg MarathonUnderground Storage Tanks · 1700 ft
- Utilicorp United IncUnderground Storage Tanks · 2300 ft
- Ronald L. RobinsonUnderground Storage Tanks · 2500 ft
- WHIRLPOOL CORPORATIONBrownfields · 0.6 mi
- ZALUCKYJ FARMS LLCBrownfields · 0.9 mi
- Point O'wood Golf & Country ClubUnderground Storage Tanks · 1.0 mi
- Remer Property Parcel 395Underground Storage Tanks · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Millburg'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 Millburg.
Sources Checked
within ~10 miles of Millburg
Severity Distribution
within ~10 miles of Millburg
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Millburg, two things run higher than the national average within ~10 miles of Millburg — Superfund (12 sites) and Toxics Release Inventory (42 sites). That's not a problem with your land — it's information about it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Millburg
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 Millburg average
Your land is one point inside Millburg
Everything above resolves to Millburg 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 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 Millburg Average
Millburg Average
- ●USDA Zones 6b, averaged across Millburg
- ●One soil character for all of Millburg
- ●Frost dates read at Millburg's scale: Apr 19 to Nov 2
YOUR Parcel
- ✓Your exact zone, not Millburg's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Millburg
Pull a site-specific report for your exact address in Millburg, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Millburg averages can't show:
We read public map data around Millburg — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Millburg average
How we know this about Millburg
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 Millburg’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 Millburg
When does frost risk typically end in Millburg?
The last hard freeze (28°F) in Millburg 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 Millburg?
The first hard freeze (28°F) in Millburg typically arrives around Nov 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 19, so the watching starts about Oct 3 — about 197 days after the spring freeze cleared.
How long is the growing season in Millburg?
Measured between 28°F hard freezes, Millburg sees about 197 frost-free days — roughly Apr 19 through Nov 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 10 to Oct 19, about 162 days.
Is the soil safe to grow vegetables in Millburg?
The federal record around Millburg is a meaningful one — 629 documented sites, mostly Underground Storage Tanks entries (333), the nearest Underground Storage Tanks record about 0.3 miles 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 Millburg?
From about Oct 3 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 2 (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 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Millburg's scale — its 6b band and its 197-day season. Your yard writes its own version of Millburg'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 Millburg’s own scale
7 of the readings below were taken at Millburg's own scale — its own ~197-day season between 28°F freezes, the 1,157 acres it covers and 629 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Millburg's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Millburg's own 28°F hard-freeze dates, about Apr 19 and Nov 2 and the ~197-day span between themNOAA 1991–2020 Climate Normals
- 629 documented contamination sites on the federal record near Millburg, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Millburg's boundary and the 1,157 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~197-day seasonGrowable Ground crop-matching engine
- The ecoregion at Millburg's own centroid, the Southern Michigan/Northern Indiana Drift PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Millburg 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 Millburg's 1,157 acres read through its county's SSURGO summaryfrom Berrien County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Berrien 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 Berrien County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Millburg's 1,157 acreswhy one lot differs from the next →
- Which side of Millburg you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,157 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Millburg-wide figureread your own land →