Brambleton, Virginia, sits in USDA hardiness zone 7a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
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.
Even in Brambleton, 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 Brambleton 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 Brambleton — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Brambleton — the short answer
Brambleton, Virginia: USDA zone 7a, about 220 days between hard freezes, across 4K acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~220
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 4K 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 7a is Brambleton's average, not your lot's — a low corner or a tree line moves it. Against Brambleton's 220-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Brambleton
Each reading below is measured for Brambleton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBrambleton runs about 220 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
MeasuredBrambleton 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 Brambleton is in
Brambleton sits in the Northern Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Brambleton's own centroid rather than borrowed from Loudoun County.
What Grows in Brambleton
Every plant below cleared Brambleton's own zone 7a and its 220-day season. Each card opens that plant's Virginia profile. How we score.
Is it too late to plant in Brambleton?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 30 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 5 — 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 Brambleton
Spotted lanternfly documented 2 miles from Brambleton, first recorded 2023. What to watch for.
What's on the federal record near Brambleton
Closest first, within ~10 miles of Brambleton. Listing isn't leaking, and distance isn't exposure.
- LCPS - LEGACY ELEMENTARY SCHOOLBrownfields · 2200 ft
- HARRIS TEETER 230Brownfields · 2400 ft
- LCPS - MADISON'S TRUST ELEMENTARY SCHOOLBrownfields · 0.7 mi
- LCPS - CREIGHTON'S CORNER ESBrownfields · 0.7 mi
- LCPS - BRIAR WOODS HSBrownfields · 0.9 mi
- LCPS - BRAMBLETON MIDDLE SCHOOLBrownfields · 1.1 mi
- LCPS - INDEPENDENCE HSBrownfields · 1.1 mi
- CVS PHARMACY #10586Brownfields · 1.3 mi
- LCPS - STONE HILL MSBrownfields · 1.4 mi
- LCPS - ROSA LEE CARTER ELEMENTARY SCHOOLBrownfields · 1.6 mi
- LCPS - ROCK RIDGE HSBrownfields · 1.7 mi
- RIVIAN AUTOMOTIVE (STERLING)Brownfields · 1.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Brambleton'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 Brambleton.
Sources Checked
within ~10 miles of Brambleton
Severity Distribution
within ~10 miles of Brambleton
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Brambleton, Brownfields runs higher than the national average — 562 sites within ~10 miles of Brambleton. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Brambleton
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 Brambleton average
Your land is one point inside Brambleton
Everything above resolves to Brambleton as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Brambleton Average
Brambleton Average
- ●USDA Zones 7a, averaged across Brambleton
- ●One soil character for all of Brambleton
- ●Frost dates read at Brambleton's scale: Mar 30 to Nov 5
YOUR Parcel
- ✓Your exact zone, not Brambleton's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Brambleton
Pull a site-specific report for your exact address in Brambleton, Virginia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Brambleton averages can't show:
We read public map data around Brambleton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Brambleton average
How we know this about Brambleton
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 Brambleton’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 Brambleton
When does frost risk typically end in Brambleton?
The last hard freeze (28°F) in Brambleton typically lands around Mar 30, 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 20.
When is the first frost in Brambleton?
The first hard freeze (28°F) in Brambleton typically arrives around Nov 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 22, so the watching starts about Oct 6 — about 220 days after the spring freeze cleared.
How long is the growing season in Brambleton?
Measured between 28°F hard freezes, Brambleton sees about 220 frost-free days — roughly Mar 30 through Nov 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 20 to Oct 22, about 185 days.
Is the soil safe to grow vegetables in Brambleton?
The federal record around Brambleton is a meaningful one — 1,127 documented sites, mostly Brownfields entries (562), 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.
How do I protect my plants from frost in Brambleton?
From about Oct 6 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 Nov 5 (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 Nov 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Brambleton's scale — its 7a band and its 220-day season. Your yard writes its own version of Brambleton'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 Brambleton’s own scale
7 of the readings below were taken at Brambleton's own scale — its own ~220-day season between 28°F freezes, the 3,683 acres it covers and 1,127 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Brambleton's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Brambleton's own 28°F hard-freeze dates, about Mar 30 and Nov 5 and the ~220-day span between themNOAA 1991–2020 Climate Normals
- 1,127 documented contamination sites on the federal record near Brambleton, the closest Brownfields record about 0.4 miles out from the town centreFederal environmental registers
- Brambleton's boundary and the 3,683 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~220-day seasonGrowable Ground crop-matching engine
- The ecoregion at Brambleton's own centroid, the Northern PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Brambletonlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Brambleton's 3,683 acres read through its county's SSURGO summaryfrom Loudoun County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Loudoun County
- The growing challenges every Virginia grower plans around — written at state scale, so they stay on the state guidefrom Virginia
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Loudoun County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Brambleton's 3,683 acreswhy one lot differs from the next →
- Which side of Brambleton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 3,683 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.4 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 Brambleton-wide figureread your own land →