Coalfield, Tennessee, sits in USDA hardiness zone 7b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
These conditions suit cabbage, prickly pear, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Coalfield, 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 Coalfield 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 Coalfield — soil, climate, flood, and parcel records. How we handle your address.
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Coalfield — the short answer
Coalfield, Tennessee: USDA zone 7b, about 214 days between hard freezes, across 16K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~214
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 16K 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 7b is Coalfield's average, not your lot's — a low corner or a tree line moves it. Against Coalfield's 214-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Coalfield
Each reading below is measured for Coalfield itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCoalfield runs about 214 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
MeasuredCoalfield sits in USDA hardiness zone 7b.
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 Coalfield is in
Coalfield sits in the Southwestern Appalachians — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Coalfield's own centroid rather than borrowed from Morgan County.
What Grows in Coalfield
Every plant below cleared Coalfield's own zone 7b and its 214-day season. Each card opens that plant's Tennessee profile. How we score.
Is it too late to plant in Coalfield?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Mar 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 31 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 31 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Coalfield
Closest first, within ~10 miles of Coalfield. Listing isn't leaking, and distance isn't exposure.
- Coalfield SchoolUnderground Storage Tanks · 0.9 mi
- B & B ENTERPRISESBrownfields · 1.3 mi
- Payne's Laundrymat And Car WashUnderground Storage Tanks · 1.3 mi
- HERAEUS METAL PROCESSING INC.Toxics Release Inventory · 1.3 mi
- Henry MelhornUnderground Storage Tanks · 1.7 mi
- Coalfield MarathonUnderground Storage Tanks · 2.4 mi
- Morgan County Outlet CenterUnderground Storage Tanks · 2.6 mi
- MELHORN SILVER RECOVERYSuperfund · 3.1 mi
- Petros MarathonUnderground Storage Tanks · 3.4 mi
- Temco IncUnderground Storage Tanks · 3.7 mi
- Mossy Grove Bait ShopUnderground Storage Tanks · 3.9 mi
- Duncan's General MerchandiseUnderground Storage Tanks · 4.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Coalfield'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 Coalfield.
Sources Checked
within ~10 miles of Coalfield
Severity Distribution
within ~10 miles of Coalfield
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Coalfield, two things run higher than the national average within ~10 miles of Coalfield — Superfund (7 sites) and PFAS (4 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.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Coalfield
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 Coalfield average
Your land is one point inside Coalfield
Everything above resolves to Coalfield as a whole — one PHZM band and one 28°F frost record, read across 16K 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 Coalfield Average
Coalfield Average
- ●USDA Zones 7b, averaged across Coalfield
- ●One soil character for all of Coalfield
- ●Frost dates read at Coalfield's scale: Mar 31 to Oct 31
YOUR Parcel
- ✓Your exact zone, not Coalfield's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Coalfield
Pull a site-specific report for your exact address in Coalfield, Tennessee — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Coalfield averages can't show:
We read public map data around Coalfield — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Coalfield average
How we know this about Coalfield
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 Coalfield’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 Coalfield
When does frost risk typically end in Coalfield?
The last hard freeze (28°F) in Coalfield typically lands around Mar 31, 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 Apr 21.
When is the first frost in Coalfield?
The first hard freeze (28°F) in Coalfield typically arrives around Oct 31, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 17, so the watching starts about Oct 1 — about 214 days after the spring freeze cleared.
How long is the growing season in Coalfield?
Measured between 28°F hard freezes, Coalfield sees about 214 frost-free days — roughly Mar 31 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 21 to Oct 17, about 179 days.
Is the soil safe to grow vegetables in Coalfield?
The federal record around Coalfield is a meaningful one — 201 documented sites, mostly Underground Storage Tanks entries (121), the nearest Underground Storage Tanks record about 0.9 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 Coalfield?
From about Oct 1 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 31 (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 31. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Coalfield's scale — its 7b band and its 214-day season. Your yard writes its own version of Coalfield'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 Coalfield’s own scale
6 of the readings below were taken at Coalfield's own scale — its own ~214-day season between 28°F freezes, the 15,828 acres it covers and 201 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Coalfield's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Coalfield's own 28°F hard-freeze dates, about Mar 31 and Oct 31 and the ~214-day span between themNOAA 1991–2020 Climate Normals
- 201 documented contamination sites on the federal record near Coalfield, the closest Underground Storage Tanks record about 0.9 miles out from the town centreFederal environmental registers
- Coalfield's boundary and the 15,828 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~214-day seasonGrowable Ground crop-matching engine
- The ecoregion at Coalfield's own centroid, the Southwestern AppalachiansUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Coalfield's 15,828 acres read through its county's SSURGO summaryfrom Morgan County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Morgan County
- The growing challenges every Tennessee grower plans around — written at state scale, so they stay on the state guidefrom Tennessee
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Morgan County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Coalfield's 15,828 acreswhy one lot differs from the next →
- Which side of Coalfield you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 15,828 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.9 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 Coalfield-wide figureread your own land →