Fauquier County, in Virginia, sits in USDA hardiness zone 7a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect cabbage, hazelnut, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Fauquier County lies within the Middleburg Virginia (Loudoun & Fauquier) — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Fauquier County holds more than one microclimate.
Soils and elevations shift across Fauquier 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 Fauquier County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Fauquier County — the short answer
Fauquier County, Virginia: USDA zone 7a, about 217 days between hard freezes, across 415K acres.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 1
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 4
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~217
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 415K 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 Fauquier County's average, not your lot's — a low corner or a tree line moves it. Against Fauquier County's 217-day season, see what your own ground reads.
Heat in Fauquier County
Across a year, Fauquier County accumulates about 3,340 growing degree days above 50°F, about 394 fewer than the middle Virginia county — ahead of 32 of Virginia’s 133 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 Fauquier County
Across Fauquier County, the ground is predominantly Alfisols, where Tankerville, Fauquier, and Purcellville are the most extensive named soil series. The soil is generally well drained with a silt loam surface. Topsoil pH runs about 5.0–5.5, strongly acidic. Rainfall drains through hydrologic group B soils.
Soil order
Alfisols
Drainage
Well drained
Prime farmland
20%
Hydric soils
6%
Soil still varies lot by lot — soil types explained.
How the ground varies across Fauquier County
The USDA soil survey maps 67% of Fauquier County as well drained — but another 32% drains differently: 12% somewhat poorly drained, 11% moderately well drained.
Tankerville is the most extensive named soil at 8% of mapped acres, then Fauquier (7%) and Purcellville (7%).
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 Fauquier County
Each reading below is measured for Fauquier 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 Fauquier 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 Fauquier County runs about pH 5.0–5.5, 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
MeasuredFauquier County runs about 217 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
MeasuredFauquier 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 Fauquier County is in
Fauquier County spans 2 EPA Level III ecoregions — Northern Piedmont (88%) and Piedmont (9%). Which one your land falls in changes what grows wild there and how the ground behaves, and a county-wide answer cannot tell you which.
What Grows in Fauquier County
We scored all 1,086 plants against Fauquier County's own USDA zone 7a and its own 217-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 Virginia profile.
Is it too late to plant in Fauquier County?
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 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 4 — 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 Fauquier County
Spotted lanternfly documented 3 miles from Fauquier County, first recorded 2023. What to watch for.
- Japanese beetle13 documented records
- monarch butterfly46 documented records
Sighting records, so they follow observers as much as insects.
What gets applied to farmland in Fauquier County
USGS estimates 54,777 lb of Glyphosate on Fauquier County farmland in 2019, its largest by weight, ahead of Atrazine (13,874 lb) and 2,4-d (7,138 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 Fauquier County — and how to grow with it.
We checked the federal record across Fauquier County — 379 documented sites across 8 of the 9 source types we track.
The most significant on record: 2 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 Fauquier 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 Fauquier County
Closest first, across Fauquier County. Listing isn't leaking, and distance isn't exposure.
- US ARMY - WARRENTON TRAINING CENTER - STATION BBrownfields · 2000 ft
- US ARMY - WARRENTON TRAINING CENTER - STATION BToxics Release Inventory · 2000 ft
- Warrenton Training Center Station BUnderground Storage Tanks · 0.5 mi
- A FLETCHER CONSTUnderground Storage Tanks · 0.8 mi
- FORMER ROBERT LUNSFORDUnderground Storage Tanks · 1.2 mi
- HIGHLAND SCHOOLUnderground Storage Tanks · 1.3 mi
- MERCHANTS TIRE & AUTO #06079Brownfields · 1.5 mi
- Warrenton ExxonUnderground Storage Tanks · 1.5 mi
- OAK SPRINGS NURS HOMEUnderground Storage Tanks · 1.6 mi
- Chicks Service IncorporatedUnderground Storage Tanks · 1.6 mi
- CHICKS SERVICES INCBrownfields · 1.6 mi
- EXXON CO U S A RA522956Brownfields · 1.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Fauquier 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 Fauquier County.
Total Sites
379
across Fauquier County
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Severity Distribution
across Fauquier County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Fauquier County, two things run higher than the national average across Fauquier County — PFAS (5 sites) and Underground Storage Tanks (251 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Fauquier 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 Fauquier County average
Your land is one point inside Fauquier County
Everything above resolves to Fauquier County as a whole — one PHZM band and one county frost record, read across 415K 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 Fauquier County Average
Fauquier County Average
- ●USDA Zones 7a, averaged across Fauquier County
- ●One soil character for all of Fauquier County
- ●Frost dates read at Fauquier County's scale: Apr 1 to Nov 4
YOUR Parcel
- ✓Your exact zone, not Fauquier County's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Fauquier County
Pull a site-specific report for your exact address in Fauquier County, Virginia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Fauquier County averages can't show:
We read public map data around Fauquier County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Fauquier County average
How we know this about Fauquier 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 Fauquier County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Fauquier County
When does frost risk typically end in Fauquier County?
The last hard freeze (28°F) in Fauquier County typically lands around Apr 1, 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 22.
How long is the growing season in Fauquier County?
Measured between 28°F hard freezes, Fauquier County sees about 217 frost-free days — roughly Apr 1 through Nov 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 22 to Oct 21, about 182 days.
Is the soil safe to grow vegetables in Fauquier County?
The federal record around Fauquier County is a meaningful one — 379 documented sites, mostly Underground Storage Tanks entries (251), the nearest Brownfields record about 0.4 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.
Everything above is measured at Fauquier County's scale — its 7a band and its 217-day season. Your yard writes its own version of Fauquier 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 Virginia's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Fauquier County’s own scale
9 of the readings below were taken at Fauquier County's own scale — its own ~217-day span between 28°F freezes, the 3 most extensive soil series mapped here and 379 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Fauquier County's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Fauquier County's own 28°F hard-freeze dates and its ~217-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Fauquier CountyUSDA NRCS SSURGO
- 379 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Brownfields record about 0.4 miles outFederal environmental registers
- Fauquier County's boundary and the 414,716 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~217-day seasonGrowable Ground crop-matching engine
- The 2 ecoregions Fauquier County spans, Northern Piedmont the largestUS EPA Level III Ecoregions
- Open occurrence records documented in Fauquier County for 2 tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
- Which agricultural compounds go onto Fauquier County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every Virginia grower plans around — written at state scale, so they stay on the state guidefrom Virginia
What this page can’t tell you
- How the season shifts across Fauquier County — the ~217 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 Fauquier County's 414,716 acreswhy one lot differs from the next →
- Which of those 379 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 Fauquier Countyread your own land →