Hancock County, in Tennessee, sits in USDA hardiness zone 7a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
The conditions favor cabbage, hazelnut, california poppy, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Hancock County lies within Appalachia — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Hancock County holds more than one microclimate.
Soils and elevations shift across Hancock County, so your frost dates and drainage aren't the county average. 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 Hancock County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Hancock County — the short answer
Hancock County, Tennessee: USDA zone 7a, about 215 days between hard freezes, across 142K acres.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 2
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 3
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~215
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 142K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are county 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 7a is Hancock County's average, not your lot's — a low corner or a tree line moves it. Against Hancock County's 215-day season, see what your own ground reads.
Heat in Hancock County
Across a year, Hancock County accumulates about 3,529 growing degree days above 50°F, about 584 fewer than the middle Tennessee county — ahead of 9 of Tennessee’s 95 counties. Degree days are the heat a crop actually gets to work with — more of them is more room to ripen a long-season crop before the freeze closes the window.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Hancock County
Across Hancock County, the ground is predominantly Inceptisols, where Wallen, Montevallo, and Fullerton are the most extensive named soil series. The soil is generally well drained with a silt loam surface. Topsoil pH runs about 5.0–5.6, strongly acidic. Rainfall drains through hydrologic group B soils.
Soil order
Inceptisols
Drainage
Well drained
Prime farmland
8%
Hydric soils
0%
Soil still varies lot by lot — soil types explained.
How the ground varies across Hancock County
The USDA soil survey maps 74% of Hancock County as well drained — but another 19% drains differently: 15% somewhat excessively drained, 3% moderately well drained.
Wallen is the most extensive named soil at 13% of mapped acres, then Montevallo (13%) and Fullerton (9%).
Which of them your own lot sits on is a parcel question, not a county one. Check your address for the survey at your boundary.
What this means for growing in Hancock County
Each reading below is measured for Hancock County itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Hancock County are well drained, in hydrologic group B — ground that drains quickly.
The upside is soil you can work early in spring and roots that never drown; the cost is that fast-draining ground dries out fast and leaches nutrients away before plants can use them.
Work in compost and mulch to hold moisture and feed, and water more often in short doses than deep and rarely.
USDA NRCS SSURGO
Surface pH
MeasuredTopsoil across Hancock County runs about pH 5.0–5.6, on the acidic side.
Blueberries, potatoes, and rhododendrons thrive in it, but most vegetables start locking out nutrients below about pH 6.0 and grow pale and stunted no matter how much you feed them.
A measured lime application raises pH for the crops that need it — but test first, because the right rate depends on your own soil, not the county average.
USDA NRCS SSURGO
Season length
MeasuredHancock County runs about 215 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
MeasuredHancock County sits in USDA hardiness zone 7a.
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 Hancock County is in
Hancock County sits in the Ridge and Valley — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Hancock County
We scored all 1,086 plants against Hancock County's own USDA zone 7a and its own 215-day season between hard freezes, using the same matching engine that runs a full parcel report. These cleared both. Sun, soil pH and drainage vary lot by lot — those are the parcel questions below. Each card opens that plant's Tennessee profile.
Is it too late to plant in Hancock County?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 5; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 2 (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. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Documented around Hancock County
Survey cells within 31 miles of Hancock County checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 55 miles off. What to watch for.
What gets applied to farmland in Hancock County
USGS estimates 2,781 lb of 2,4-d on Hancock County farmland in 2019, its largest by weight, ahead of Glyphosate (790 lb) and Dicamba (713 lb).
Farmland across the whole county, not any one lot. Check your address for the site-by-site record.
Safe to Grow Here?
What the federal record shows across Hancock County — and how to grow with it.
We checked the federal record across Hancock County — 75 documented sites across 5 of the 9 source types we track.
The most significant on record: 2 Toxics Release Inventory facilities. Active industrial facilities reporting chemical releases to air, water, and land.
The federal record across Hancock County is a modest one — a typical footprint for a growing area. Nothing here calls for alarm; it's worth knowing which recorded sites sit closest to where you grow, and each one on the map carries its type and location. If one turns out to be a near neighbor, a one-time soil test settles the question.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Hancock County
Closest first, across Hancock County. Listing isn't leaking, and distance isn't exposure.
- W.H. Green ProspectMining · 700 ft
- Clinch River Market, LLCUnderground Storage Tanks · 0.7 mi
- VOLUNTEER FABRICATORS INC.Brownfields · 0.7 mi
- VOLUNTEER FABRICATORS INC.Toxics Release Inventory · 0.7 mi
- L.r. TreatUnderground Storage Tanks · 0.7 mi
- J W GroceryUnderground Storage Tanks · 0.7 mi
- Martin GroceryUnderground Storage Tanks · 0.7 mi
- Former Kyles Ford Service Station*Underground Storage Tanks · 0.7 mi
- Grover MarionUnderground Storage Tanks · 0.7 mi
- Hancock Co TransportationUnderground Storage Tanks · 0.8 mi
- Corner MartUnderground Storage Tanks · 0.8 mi
- Powell Valley Electric Coop IncUnderground Storage Tanks · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Hancock County'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 Hancock County.
Total Sites
75
across Hancock County
Risk Level
Moderate
Highest-severity
2 Toxics Release Inventory facilities
Sources Checked
across Hancock County
Severity Distribution
across Hancock County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Hancock County, Mining runs higher than the national average — 28 sites across Hancock County. 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 Hancock County
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 Hancock County average
Your land is one point inside Hancock County
Everything above resolves to Hancock County as a whole — one PHZM band and one county frost record, read across 142K 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 county 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 county average.
Your Lot vs the Hancock County Average
Hancock County Average
- ●USDA Zones 7a, averaged across Hancock County
- ●One soil character for all of Hancock County
- ●Frost dates read at Hancock County's scale: Apr 2 to Nov 3
YOUR Parcel
- ✓Your exact zone, not Hancock County's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Hancock County
Pull a site-specific report for your exact address in Hancock County, Tennessee — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Hancock County averages can't show:
We read public map data around Hancock County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Hancock County average
How we know this about Hancock County
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at county grain; hard-freeze dates from NOAA 1991–2020 28°F normals at this county’s own record where one resolves, and the labelled statewide window where none does; soils from the USDA NRCS SSURGO survey, area-weighted across the county’s own map units; boundaries and acreage from US Census TIGER/Line 2025; the contamination and pesticide records from the federal sources named in their beats above. Where Hancock County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Hancock County
When does frost risk typically end in Hancock County?
The last hard freeze (28°F) in Hancock County typically lands around Apr 2, 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 23.
How long is the growing season in Hancock County?
Measured between 28°F hard freezes, Hancock County sees about 215 frost-free days — roughly Apr 2 through Nov 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 23 to Oct 20, about 180 days.
Is the soil safe to grow vegetables in Hancock County?
The federal record around Hancock County shows 75 documented sites, mostly Underground Storage Tanks entries (29), the nearest Mining record about 0.1 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.
Everything above is measured at Hancock County's scale — its 7a band and its 215-day season. Your yard writes its own version of Hancock County's numbers: we read soil, sun, drainage and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads Tennessee's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Hancock County’s own scale
8 of the readings below were taken at Hancock County's own scale — its own ~215-day span between 28°F freezes, the 3 most extensive soil series mapped here and 75 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Hancock County's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Hancock County's own 28°F hard-freeze dates and its ~215-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Hancock CountyUSDA NRCS SSURGO
- 75 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Mining record about 0.1 miles outFederal environmental registers
- Hancock County's boundary and the 142,287 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~215-day seasonGrowable Ground crop-matching engine
- Hancock County sitting wholly inside the Ridge and ValleyUS EPA Level III Ecoregions
- Which agricultural compounds go onto Hancock County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Tennessee grower plans around — written at state scale, so they stay on the state guidefrom Tennessee
What this page can’t tell you
- How the season shifts across Hancock County — the ~215 days above is one reading at its centre; the 12 towns below each carry their owntowns in this county →
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Hancock County's 142,287 acreswhy one lot differs from the next →
- Which of those 75 documented sites actually reaches your soil — that needs your address, the wind, and the groundwater directionhow we read the record →
- Where cold air settles, which slopes face the sun, and which way the wind runs on your own ground — none of it survives being averaged over Hancock Countyread your own land →