Falls Church city, in Virginia, sits in USDA hardiness zone 7b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Crops well matched to these conditions include cabbage, prickly pear, california poppy, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Falls Church city lies within the Northern Virginia (DC Metro) — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Falls Church city holds more than one microclimate.
Soils and elevations shift across Falls Church city, 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 Falls Church city — soil, climate, flood, and parcel records. How we handle your address.
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Falls Church city — the short answer
Falls Church city, Virginia: USDA zone 7b, about 240 days between hard freezes, across 1K acres.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 23
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Nov 18
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~240
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 1K 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 Falls Church city's average, not your lot's — a low corner or a tree line moves it. Against Falls Church city's 240-day season, see what your own ground reads.
Heat in Falls Church city
Across a year, Falls Church city accumulates about 3,858 growing degree days above 50°F, about 124 more than the middle Virginia county — ahead of 78 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 Falls Church County
Across Falls Church County, the ground is predominantly Entisols, where Wheaton, Glenelg, and Meadowville are the most extensive named soil series. The soil is generally well drained with a loam surface. Topsoil pH runs about 5.0–7.5, slightly acidic. Rainfall drains through hydrologic group C soils.
Soil order
Entisols
Drainage
Well drained
Prime farmland
3%
Hydric soils
1%
Soil still varies lot by lot — soil types explained.
How the ground varies across Falls Church city
The USDA soil survey maps 68% of Falls Church city as well drained — but another 2% drains differently: 1% moderately well drained, 1% somewhat poorly drained.
Wheaton is the most extensive named soil at 52% of mapped acres, then Glenelg (27%) and Meadowville (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 Falls Church city
Each reading below is measured for Falls Church city itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Drainage
MeasuredThe dominant soils across Falls Church city are well drained, in hydrologic group C — 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 Falls Church city runs about pH 5.0–7.5, close to neutral.
This is the range most vegetables prefer — one correction you probably do not have to make, which is genuinely good news for a new bed.
Keep it there with compost rather than lime or sulfur, and only amend if your own soil test says otherwise.
USDA NRCS SSURGO
Season length
MeasuredFalls Church city runs about 240 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
MeasuredFalls Church city 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
What Grows in Falls Church city
We scored all 1,086 plants against Falls Church city's own USDA zone 7b and its own 240-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 Falls Church city?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 23 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 18 — 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 Falls Church city
Spotted lanternfly documented 2 miles from Falls Church city, first recorded 2020. What to watch for.
- monarch butterfly1 documented records
Sighting records, so they follow observers as much as insects.
Safe to Grow Here?
What the federal record shows across Falls Church County — and how to grow with it.
We checked the federal record across Falls Church County — 73 documented sites across 2 of the 9 source types we track.
The most significant on record: 33 brownfield sites. Former commercial or industrial land where legacy contamination may persist.
The federal record across Falls Church 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 Falls Church city
Closest first, across Falls Church County. Listing isn't leaking, and distance isn't exposure.
- CHEVRON USA PRODUCTS CO #122195Brownfields · 150 ft
- EXXON CO USA #27570Brownfields · 300 ft
- Exxon #27570Underground Storage Tanks · 300 ft
- POTOMAC CLEANERSBrownfields · 300 ft
- FALLS CHURCH SERVICENTER INCUnderground Storage Tanks · 400 ft
- HARRIS TEETER 307Brownfields · 650 ft
- FALLS CHURCH POST OFFICEUnderground Storage Tanks · 650 ft
- City of Falls ChurchUnderground Storage Tanks · 750 ft
- West Broad TexacoUnderground Storage Tanks · 1100 ft
- CVS PHARMACY #1905Brownfields · 1200 ft
- PARK TOWERSBrownfields · 1200 ft
- PARK TOWERS CONDOMINIUMUnderground Storage Tanks · 1500 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Falls Church city'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 Falls Church city.
Severity Distribution
across Falls Church County
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in Falls Church city
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 Falls Church city average
Your land is one point inside Falls Church city
Everything above resolves to Falls Church city as a whole — one PHZM band and one county frost record, read across 1K 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 Falls Church city Average
Falls Church city Average
- ●USDA Zones 7b, averaged across Falls Church city
- ●One soil character for all of Falls Church city
- ●Frost dates read at Falls Church city's scale: Mar 23 to Nov 18
YOUR Parcel
- ✓Your exact zone, not Falls Church city's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Falls Church city
Pull a site-specific report for your exact address in Falls Church city, Virginia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Falls Church city averages can't show:
We read public map data around Falls Church city — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Falls Church city average
How we know this about Falls Church city
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 Falls Church city carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Falls Church city
When does frost risk typically end in Falls Church city?
The last hard freeze (28°F) in Falls Church city typically lands around Mar 23, 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 13.
How long is the growing season in Falls Church city?
Measured between 28°F hard freezes, Falls Church city sees about 240 frost-free days — roughly Mar 23 through Nov 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 13 to Nov 4, about 205 days.
Is the soil safe to grow vegetables in Falls Church city?
The federal record around Falls Church city shows 73 documented sites, mostly Underground Storage Tanks entries (40), the nearest Brownfields record under a tenth of a mile 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 Falls Church city's scale — its 7b band and its 240-day season. Your yard writes its own version of Falls Church city'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 Falls Church city’s own scale
7 of the readings below were taken at Falls Church city's own scale — its own ~240-day span between 28°F freezes, the 3 most extensive soil series mapped here and 73 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Falls Church city's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Falls Church city's own 28°F hard-freeze dates and its ~240-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Falls Church cityUSDA NRCS SSURGO
- 73 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Brownfields record under a tenth of a mile outFederal environmental registers
- Falls Church city's boundary and the 1,310 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~240-day seasonGrowable Ground crop-matching engine
- Open occurrence records documented in Falls Church city for a tracked speciesGBIF derived datasets (CC0 / CC BY 4.0)
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 Falls Church city — the ~240 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 Falls Church city's 1,310 acreswhy one lot differs from the next →
- Which of those 73 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 Falls Church cityread your own land →