Buchanan, Michigan, sits in USDA hardiness zone 6a — 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, hazelnut, lavender, 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 Buchanan, 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 Buchanan 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 Buchanan — soil, climate, flood, and parcel records. How we handle your address.
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Buchanan — the short answer
Buchanan, Michigan: USDA zone 6a, about 200 days between hard freezes, across 2K acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 17
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~200
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 2K 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 Buchanan's average, not your lot's — a low corner or a tree line moves it. Against Buchanan's 200-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Buchanan
Each reading below is measured for Buchanan itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBuchanan runs about 200 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredBuchanan 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 Buchanan is in
Buchanan sits in the Southern Michigan/Northern Indiana Drift Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Buchanan's own centroid rather than borrowed from Berrien County.
What Grows in Buchanan
Every plant below cleared Buchanan's own zone 6a and its 200-day season. Each card opens that plant's Michigan profile. How we score.
Is it too late to plant in Buchanan?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 20; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 17 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 3 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Buchanan
Spotted lanternfly documented 16 miles from Buchanan, first recorded 2023. What to watch for.
What's on the federal record near Buchanan
Closest first, within ~10 miles of Buchanan. Listing isn't leaking, and distance isn't exposure.
- MI DEPT/NATURAL RESOURCES AND ENVIRONMENTBrownfields · 850 ft
- Dave's ShellUnderground Storage Tanks · 850 ft
- BUCHANAN COMMUNITY SCHOOLSBrownfields · 1400 ft
- Buchanan Community SchoolsUnderground Storage Tanks · 1400 ft
- Parking LotUnderground Storage Tanks · 1400 ft
- Aalfs Service IncUnderground Storage Tanks · 1600 ft
- Amoco Oil CoUnderground Storage Tanks · 1600 ft
- Buchanan Farmers Credit UnionUnderground Storage Tanks · 1800 ft
- BRADLEY MACHINE PRODUCTS LLCBrownfields · 2000 ft
- Niles RPM IV IncUnderground Storage Tanks · 2000 ft
- WESNER GENE CHEVROLET GEO INCBrownfields · 2100 ft
- Golden Farm CandiesUnderground Storage Tanks · 2100 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Buchanan'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 Buchanan.
Sources Checked
within ~10 miles of Buchanan
Severity Distribution
within ~10 miles of Buchanan
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Buchanan, Toxics Release Inventory runs higher than the national average — 49 sites within ~10 miles of Buchanan. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Buchanan
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 Buchanan average
Your land is one point inside Buchanan
Everything above resolves to Buchanan as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Buchanan Average
Buchanan Average
- ●USDA Zones 6a, averaged across Buchanan
- ●One soil character for all of Buchanan
- ●Frost dates read at Buchanan's scale: Apr 17 to Nov 3
YOUR Parcel
- ✓Your exact zone, not Buchanan's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Buchanan
Pull a site-specific report for your exact address in Buchanan, Michigan — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Buchanan averages can't show:
We read public map data around Buchanan — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Buchanan average
How we know this about Buchanan
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 Buchanan’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 Buchanan
When does frost risk typically end in Buchanan?
The last hard freeze (28°F) in Buchanan typically lands around Apr 17, 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 8.
When is the first frost in Buchanan?
The first hard freeze (28°F) in Buchanan typically arrives around Nov 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 20, so the watching starts about Oct 4 — about 200 days after the spring freeze cleared.
How long is the growing season in Buchanan?
Measured between 28°F hard freezes, Buchanan sees about 200 frost-free days — roughly Apr 17 through Nov 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 8 to Oct 20, about 165 days.
Is the soil safe to grow vegetables in Buchanan?
The federal record around Buchanan is a meaningful one — 603 documented sites, mostly Underground Storage Tanks entries (312), the nearest Brownfields record about 0.2 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 Buchanan?
From about Oct 4 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 3 (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 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Buchanan's scale — its 6a band and its 200-day season. Your yard writes its own version of Buchanan'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 Buchanan’s own scale
7 of the readings below were taken at Buchanan's own scale — its own ~200-day season between 28°F freezes, the 1,614 acres it covers and 603 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Buchanan's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Buchanan's own 28°F hard-freeze dates, about Apr 17 and Nov 3 and the ~200-day span between themNOAA 1991–2020 Climate Normals
- 603 documented contamination sites on the federal record near Buchanan, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Buchanan's boundary and the 1,614 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~200-day seasonGrowable Ground crop-matching engine
- The ecoregion at Buchanan's own centroid, the Southern Michigan/Northern Indiana Drift PlainsUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Buchananlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Buchanan's 1,614 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 Buchanan's 1,614 acreswhy one lot differs from the next →
- Which side of Buchanan you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,614 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Buchanan-wide figureread your own land →
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