Davidson County, in Tennessee, sits in USDA hardiness zone 7b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Well-matched crops include cabbage, prickly pear, california poppy, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Davidson County lies within the Nashville Basin — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Davidson County holds more than one microclimate.
Soils and elevations shift across Davidson 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 Davidson County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Davidson County — the short answer
Davidson County, Tennessee: USDA zone 7b, about 236 days between hard freezes, across 322K acres.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 21
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 12
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~236
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 322K 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 7b is Davidson County's average, not your lot's — a low corner or a tree line moves it. Against Davidson County's 236-day season, see what your own ground reads.
Heat and winter chill in Davidson County
Across a year, Davidson County accumulates about 4,381 growing degree days above 50°F, about 268 more than the middle Tennessee county — ahead of 79 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.
Winter banks about 1,987 hours below 45°F, 72 fewer than the Tennessee middle of 2,059. Chill is what tells a fruit tree its dormancy is over, and it is set by climate rather than by anything you can build.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Davidson County
Across Davidson County, the ground is predominantly Alfisols, where Mimosa, Bodine, and Maury are the most extensive named soil series. The soil is generally well drained with a silt loam surface. Topsoil pH runs about 5.3–6.2, moderately acidic. Rainfall drains through hydrologic group A soils.
Soil order
Alfisols
Drainage
Well drained
Prime farmland
19%
Hydric soils
0%
Soil still varies lot by lot — soil types explained.
How the ground varies across Davidson County
The USDA soil survey maps 65% of Davidson County as well drained — but another 25% drains differently: 18% somewhat excessively drained, 6% moderately well drained.
Mimosa is the most extensive named soil at 19% of mapped acres, then Bodine (16%) and Maury (11%).
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 Davidson County
Each reading below is measured for Davidson 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 Davidson County are well drained, in hydrologic group A — 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 Davidson County runs about pH 5.3–6.2, 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
MeasuredDavidson County runs about 236 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
MeasuredDavidson County 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 Davidson County is in
Davidson County sits in the Interior Plateau — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Davidson County
We scored all 1,086 plants against Davidson County's own USDA zone 7b and its own 236-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 Davidson County?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 21; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 21 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 12 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
Documented around Davidson County
Spotted lanternfly documented 5 miles from Davidson County, first recorded 2023. What to watch for.
- Japanese beetle3 documented records
- monarch butterfly75 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Davidson County
USGS estimates 3,831 lb of 2,4-d on Davidson County farmland in 2019, its largest by weight, ahead of Glyphosate (1,213 lb) and Metolachlor & Metolachlor-s (348 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 Davidson County — and how to grow with it.
We checked the federal record across Davidson County — 2,216 documented sites across 7 of the 9 source types we track.
The most significant on record: 12 Superfund sites (none NPL-listed). Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Davidson County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
What's on the federal record near Davidson County
Closest first, across Davidson County. Listing isn't leaking, and distance isn't exposure.
- U.t. Experiment StationUnderground Storage Tanks · 250 ft
- Rollins Leasing CorpUnderground Storage Tanks · 500 ft
- Hardison Seed CoUnderground Storage Tanks · 750 ft
- Central Services BuildingUnderground Storage Tanks · 850 ft
- Capitol Complex Service CenterUnderground Storage Tanks · 950 ft
- Old Delco BuildingUnderground Storage Tanks · 1000 ft
- All Right ParkingUnderground Storage Tanks · 1000 ft
- Formerly Morrissey ChevronUnderground Storage Tanks · 1100 ft
- U S SMOKELESS TOBACCO MANUFACTURING CO LLCToxics Release Inventory · 1100 ft
- U S SMOKELESS TOBACCO MANUFACTURING CO LLCBrownfields · 1100 ft
- UNITED STATES TOBACCO MFG LPBrownfields · 1100 ft
- Goodyear Tire Center 1592 McdufUnderground Storage Tanks · 1200 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Davidson 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 Davidson County.
Total Sites
2,216
across Davidson County
Risk Level
Elevated
Highest-severity
12 Superfund sites (none NPL-listed)
Sources Checked
across Davidson County
Severity Distribution
across Davidson County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Davidson County, two things run higher than the national average across Davidson County — Toxics Release Inventory (154 sites) and Underground Storage Tanks (1,508 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Davidson 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 Davidson County average
Your land is one point inside Davidson County
Everything above resolves to Davidson County as a whole — one PHZM band and one county frost record, read across 322K 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 Davidson County Average
Davidson County Average
- ●USDA Zones 7b, averaged across Davidson County
- ●One soil character for all of Davidson County
- ●Frost dates read at Davidson County's scale: Mar 21 to Nov 12
YOUR Parcel
- ✓Your exact zone, not Davidson County's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Davidson County
Pull a site-specific report for your exact address in Davidson County, Tennessee — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Davidson County averages can't show:
We read public map data around Davidson County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Davidson County average
How we know this about Davidson 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 Davidson County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Davidson County
When does frost risk typically end in Davidson County?
The last hard freeze (28°F) in Davidson County typically lands around Mar 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 Apr 11.
How long is the growing season in Davidson County?
Measured between 28°F hard freezes, Davidson County sees about 236 frost-free days — roughly Mar 21 through Nov 12, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 11 to Oct 29, about 201 days.
Is the soil safe to grow vegetables in Davidson County?
The federal record around Davidson County is a meaningful one — 2,216 documented sites, mostly Underground Storage Tanks entries (1,508), the nearest Underground Storage Tanks record under a tenth of a mile 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.
Everything above is measured at Davidson County's scale — its 7b band and its 236-day season. Your yard writes its own version of Davidson 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 Davidson County’s own scale
9 of the readings below were taken at Davidson County's own scale — its own ~236-day span between 28°F freezes, the 3 most extensive soil series mapped here and 2,216 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Davidson County's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Davidson County's own 28°F hard-freeze dates and its ~236-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Davidson CountyUSDA NRCS SSURGO
- 2,216 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record under a tenth of a mile outFederal environmental registers
- Davidson County's boundary and the 322,253 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~236-day seasonGrowable Ground crop-matching engine
- Davidson County sitting wholly inside the Interior PlateauUS EPA Level III Ecoregions
- Open occurrence records documented in Davidson County for 2 tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Davidson 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 Davidson County — the ~236 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 Davidson County's 322,253 acreswhy one lot differs from the next →
- Which of those 2,216 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 Davidson Countyread your own land →