Millersburg, Michigan, sits in USDA hardiness zone 5a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
A short list that earns its place here — cabbage, cranberry, lavender, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Millersburg, 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 Millersburg 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 Millersburg — soil, climate, flood, and parcel records. How we handle your address.
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Millersburg — the short answer
Millersburg, Michigan: USDA zone 5a, about 155 days between hard freezes, across 634 acres of town.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 11
- 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
- ~155
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 634 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 Millersburg's average, not your lot's — a low corner or a tree line moves it. Against Millersburg's 155-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Millersburg
Each reading below is measured for Millersburg itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMillersburg runs about 155 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
MeasuredMillersburg 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 Millersburg is in
Millersburg sits in the Northern Lakes and Forests — EPA Level III, inside the wider Northern Forests. That is read at Millersburg's own centroid rather than borrowed from Presque Isle County.
What Grows in Millersburg
Every plant below cleared Millersburg's own zone 5a and its 155-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Millersburg?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Apr 13; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 11 (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. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
What's on the federal record near Millersburg
Closest first, within ~10 miles of Millersburg. Listing isn't leaking, and distance isn't exposure.
- Alice's RestaurantUnderground Storage Tanks · 900 ft
- Main Street Right Of WayUnderground Storage Tanks · 950 ft
- Near Millersburg Vlg (street)innUnderground Storage Tanks · 1200 ft
- Village Mini MartUnderground Storage Tanks · 1200 ft
- Randy & Pattys Halfway StationUnderground Storage Tanks · 2.0 mi
- MERIT ENERGY COBrownfields · 3.2 mi
- PRESQUE ISLE ELECTRIC GWCUBrownfields · 7.4 mi
- Presque Isle Electric Coop IncUnderground Storage Tanks · 7.5 mi
- COUNTY OF PRESQUE ISLE ROAD COMMISSIONBrownfields · 7.5 mi
- Presque Isle County Road CommUnderground Storage Tanks · 7.5 mi
- MI DEPT/TRANSPORTATIONBrownfields · 7.5 mi
- Charles BruderUnderground Storage Tanks · 7.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Millersburg'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 Millersburg.
Severity Distribution
within ~10 miles of Millersburg
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Millersburg, Underground Storage Tanks runs higher than the national average — 29 sites within ~10 miles of Millersburg. 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 Millersburg
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 Millersburg average
Your land is one point inside Millersburg
Everything above resolves to Millersburg as a whole — one PHZM band and one 28°F frost record, read across 634 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 Millersburg Average
Millersburg Average
- ●USDA Zones 5a, averaged across Millersburg
- ●One soil character for all of Millersburg
- ●Frost dates read at Millersburg's scale: May 11 to Oct 13
YOUR Parcel
- ✓Your exact zone, not Millersburg's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Millersburg
Pull a site-specific report for your exact address in Millersburg, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Millersburg averages can't show:
We read public map data around Millersburg — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Millersburg average
How we know this about Millersburg
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 Millersburg’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 Millersburg
When does frost risk typically end in Millersburg?
The last hard freeze (28°F) in Millersburg typically lands around May 11, 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 1.
When is the first frost in Millersburg?
The first hard freeze (28°F) in Millersburg 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 155 days after the spring freeze cleared.
How long is the growing season in Millersburg?
Measured between 28°F hard freezes, Millersburg sees about 155 frost-free days — roughly May 11 through Oct 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 1 to Sep 29, about 120 days.
Is the soil safe to grow vegetables in Millersburg?
The federal record around Millersburg is light — 44 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (29), the nearest Underground Storage Tanks record about 0.2 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in Millersburg?
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 Millersburg's scale — its 5a band and its 155-day season. Your yard writes its own version of Millersburg'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 Millersburg’s own scale
6 of the readings below were taken at Millersburg's own scale — its own ~155-day season between 28°F freezes, the 634 acres it covers and 44 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Millersburg's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Millersburg's own 28°F hard-freeze dates, about May 11 and Oct 13 and the ~155-day span between themNOAA 1991–2020 Climate Normals
- 44 documented contamination sites on the federal record near Millersburg, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Millersburg's boundary and the 634 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~155-day seasonGrowable Ground crop-matching engine
- The ecoregion at Millersburg'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 Millersburg's 634 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 Millersburg's 634 acreswhy one lot differs from the next →
- Which side of Millersburg you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 634 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 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 Millersburg-wide figureread your own land →
More in Michigan
Wider growing context
What grows across MichiganMillersburg sits outside our named growing regions, so Michigan as a whole is its closest context here.
Nearby growing guides