Ishpeming, Michigan, sits in USDA hardiness zone 4b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Well-matched crops include cabbage, cranberry, cilantro, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Ishpeming, 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 Ishpeming 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 Ishpeming — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Ishpeming — the short answer
Ishpeming, Michigan: USDA zone 4b, about 132 days between hard freezes, across 6K acres of city.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Sep 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~132
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 6K 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 4b is Ishpeming's average, not your lot's — a low corner or a tree line moves it. Against Ishpeming's 132-day season, see what your own ground reads.
Your town runs its own season
Ishpeming's own 30-year record measures about 132 days between 28°F killing freezes — 40 days shorter than Marquette County's ~172. Both are measured records, not estimates.
That gap is the whole reason a county average can mislead here. Plant against Ishpeming's ~132-day season rather than the county figure — and the sun, slope and cold-air drainage on your specific lot move it again.
NOAA Regional Climate Centers ACIS (1991–2020), 30-year daily minimum record. Both figures are measured records — this town’s own and its county’s. A town with no record of its own is absent here rather than estimated.
Soil varies lot by lot — soil types explained.
What this means for growing in Ishpeming
Each reading below is measured for Ishpeming itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredIshpeming runs about 132 days between hard freezes — a short growing season.
Long-maturing crops like melons, sweet potatoes, and winter squash can run out of runway before the first hard freeze, ripening late or not at all.
Lead with fast-maturing varieties, and stretch the season on both ends with cold frames, low tunnels, or a greenhouse.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredIshpeming sits in USDA hardiness zone 4b.
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 Ishpeming is in
Ishpeming sits in the Northern Lakes and Forests — EPA Level III, inside the wider Northern Forests. That is read at Ishpeming's own centroid rather than borrowed from Marquette County.
What Grows in Ishpeming
Every plant below cleared Ishpeming's own zone 4b and its 132-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Ishpeming?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Apr 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Sep 30 — long-season crops need about 90 days of runway, quick greens only 30. In a season this compact, fast finishers and cold-hardy greens do the late work, and garlic tucked in before the freeze repays you next summer.
What's on the federal record near Ishpeming
Closest first, within ~10 miles of Ishpeming. Listing isn't leaking, and distance isn't exposure.
- A LINDBERG AND SONS INCBrownfields · 0.8 mi
- Shop AreaUnderground Storage Tanks · 0.8 mi
- Wommers ServiceUnderground Storage Tanks · 0.8 mi
- Sun-Aries IncUnderground Storage Tanks · 0.9 mi
- Ishpeming Service CenterUnderground Storage Tanks · 1.0 mi
- THIRD STREET AUTO SALVAGEBrownfields · 1.0 mi
- Frontier Servco FSUnderground Storage Tanks · 1.2 mi
- OLD SCHOOL AUTO REPAIR INCBrownfields · 1.2 mi
- Robbins, IncUnderground Storage Tanks · 1.2 mi
- ROBBINS INCBrownfields · 1.2 mi
- Cohodas Brothers CoUnderground Storage Tanks · 1.3 mi
- BRANDEX INC EXPRESS STATIONBrownfields · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Ishpeming'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 Ishpeming.
Total Sites
245
within ~10 miles of Ishpeming
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Ishpeming
Severity Distribution
within ~10 miles of Ishpeming
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Ishpeming, Mining runs higher than the national average — 30 sites within ~10 miles of Ishpeming. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Ishpeming
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 Ishpeming average
Your land is one point inside Ishpeming
Everything above resolves to Ishpeming as a whole — and this is a city whose own 30-year record already runs a season its county’s does not. Your parcel sits at one point inside even that. 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 Ishpeming Average
Ishpeming Average
- ●USDA Zones 4b, averaged across Ishpeming
- ●One soil character for all of Ishpeming
- ●Frost dates read at Ishpeming's scale: May 21 to Sep 30
YOUR Parcel
- ✓Your exact zone, not Ishpeming's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ishpeming
Pull a site-specific report for your exact address in Ishpeming, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Ishpeming averages can't show:
We read public map data around Ishpeming — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Ishpeming average
How we know this about Ishpeming
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 Ishpeming’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 Ishpeming
When does frost risk typically end in Ishpeming?
The last hard freeze (28°F) in Ishpeming typically lands around May 21, 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 11.
When is the first frost in Ishpeming?
The first hard freeze (28°F) in Ishpeming typically arrives around Sep 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 16, so the watching starts about Aug 31 — about 132 days after the spring freeze cleared.
How long is the growing season in Ishpeming?
Measured between 28°F hard freezes, Ishpeming sees about 132 frost-free days — roughly May 21 through Sep 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Jun 11 to Sep 16, about 97 days.
Is the soil safe to grow vegetables in Ishpeming?
The federal record around Ishpeming is a meaningful one — 245 documented sites, mostly Underground Storage Tanks entries (113), the nearest Brownfields record about 0.8 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 gardeners stretch the season in Ishpeming?
With about 132 frost-free days between hard freezes, Ishpeming rewards the classic extension moves: floating row cover buys roughly two to four extra weeks at each shoulder — on this season that is a working window nearer 160 to 188 days — and cold frames or low tunnels buy more. Starting transplants indoors ahead of the May 21 hard-freeze normal stretches the season without touching the calendar.
Everything above is measured at Ishpeming's scale — its 4b band and its 132-day season. Your yard writes its own version of Ishpeming'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 Ishpeming’s own scale
6 of the readings below were taken at Ishpeming's own scale — its own ~132-day season between 28°F freezes, the 5,599 acres it covers and 245 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Ishpeming's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Ishpeming's own 28°F hard-freeze dates, about May 21 and Sep 30 and the ~132-day span between themNOAA 1991–2020 Climate Normals
- 245 documented contamination sites on the federal record near Ishpeming, the closest Brownfields record about 0.8 miles out from the town centreFederal environmental registers
- Ishpeming's boundary and the 5,599 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~132-day seasonGrowable Ground crop-matching engine
- The ecoregion at Ishpeming'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 Ishpeming's 5,599 acres read through its county's SSURGO summaryfrom Marquette County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Marquette 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 Marquette County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Ishpeming's 5,599 acreswhy one lot differs from the next →
- Which side of Ishpeming you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 5,599 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.8 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 Ishpeming-wide figureread your own land →
More in Michigan
Growing region
Nearby growing guides