McIntire, Iowa, sits in USDA hardiness zone 5a — a zone band wide enough that plant choice, not possibility, is the interesting question.
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 McIntire, 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 McIntire 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 McIntire — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
McIntire — the short answer
McIntire, Iowa: USDA zone 5a, about 174 days between hard freezes, across 646 acres of city.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 22
- 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
- ~174
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 646 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 McIntire's average, not your lot's — a low corner or a tree line moves it. Against McIntire's 174-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in McIntire
Each reading below is measured for McIntire itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredMcIntire runs about 174 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
MeasuredMcIntire 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 McIntire is in
McIntire sits in the Western Corn Belt Plains — EPA Level III, inside the wider Great Plains. That is read at McIntire's own centroid rather than borrowed from Mitchell County.
What Grows in McIntire
Every plant below cleared McIntire's own zone 5a and its 174-day season. Each card opens that plant's Iowa profile. How we score.
Is it too late to plant in McIntire?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 22 (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 McIntire
Closest first, within ~10 miles of McIntire. Listing isn't leaking, and distance isn't exposure.
- TETZNERS SERVICEUnderground Storage Tanks · 1000 ft
- MCINTIRE FABRICATORS INCToxics Release Inventory · 2300 ft
- ITC MIDWEST - MITCHELL COUNTYBrownfields · 3.5 mi
- HENRY C RUNDEUnderground Storage Tanks · 3.6 mi
- CASEY''S GENERAL STORE 2874Underground Storage Tanks · 5.3 mi
- B & H STANDARDUnderground Storage Tanks · 5.3 mi
- SECONDARY ROADS DEPARTMENTUnderground Storage Tanks · 5.3 mi
- MEYER GARAGE INCBrownfields · 5.3 mi
- MEYER GARAGEUnderground Storage Tanks · 5.3 mi
- ANDYS MINI MARTUnderground Storage Tanks · 5.4 mi
- KEELING AUTO REPAIRUnderground Storage Tanks · 5.4 mi
- 099N14W30CACA 17554 1964Riceville 2Nitrate · 5.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from McIntire'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 McIntire.
Total Sites
69
within ~10 miles of McIntire
Risk Level
Moderate
Highest-severity
5 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of McIntire
Severity Distribution
within ~10 miles of McIntire
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around McIntire, two things run higher than the national average within ~10 miles of McIntire — CAFO (6 sites) and Nitrate (22 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in McIntire
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 McIntire average
Your land is one point inside McIntire
Everything above resolves to McIntire as a whole — one PHZM band and one 28°F frost record, read across 646 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 McIntire Average
McIntire Average
- ●USDA Zones 5a, averaged across McIntire
- ●One soil character for all of McIntire
- ●Frost dates read at McIntire's scale: Apr 22 to Oct 13
YOUR Parcel
- ✓Your exact zone, not McIntire's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in McIntire
Pull a site-specific report for your exact address in McIntire, Iowa — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that McIntire averages can't show:
We read public map data around McIntire — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the McIntire average
How we know this about McIntire
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 McIntire’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 McIntire
When does frost risk typically end in McIntire?
The last hard freeze (28°F) in McIntire typically lands around Apr 22, 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 13.
When is the first frost in McIntire?
The first hard freeze (28°F) in McIntire 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 174 days after the spring freeze cleared.
How long is the growing season in McIntire?
Measured between 28°F hard freezes, McIntire sees about 174 frost-free days — roughly Apr 22 through Oct 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 13 to Sep 29, about 139 days.
Is the soil safe to grow vegetables in McIntire?
The federal record around McIntire shows 69 documented sites, mostly Nitrate entries (22), the nearest Underground Storage Tanks record about 0.2 miles 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 McIntire?
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 McIntire's scale — its 5a band and its 174-day season. Your yard writes its own version of McIntire'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 McIntire’s own scale
6 of the readings below were taken at McIntire's own scale — its own ~174-day season between 28°F freezes, the 646 acres it covers and 69 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- McIntire's own USDA hardiness band, zones 5aUSDA PHZM 2023
- McIntire's own 28°F hard-freeze dates, about Apr 22 and Oct 13 and the ~174-day span between themNOAA 1991–2020 Climate Normals
- 69 documented contamination sites on the federal record near McIntire, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- McIntire's boundary and the 646 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~174-day seasonGrowable Ground crop-matching engine
- The ecoregion at McIntire's own centroid, the Western Corn Belt PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so McIntire's 646 acres read through its county's SSURGO summaryfrom Mitchell County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Mitchell County
- The growing challenges every Iowa grower plans around — written at state scale, so they stay on the state guidefrom Iowa
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Mitchell County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among McIntire's 646 acreswhy one lot differs from the next →
- Which side of McIntire you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 646 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 McIntire-wide figureread your own land →
More in Iowa
Wider growing context
What grows across IowaMcIntire sits outside our named growing regions, so Iowa as a whole is its closest context here.
Nearby growing guides