Rockbridge County, in Virginia, sits in USDA hardiness zone 7a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Expect tomato, grape, peanut, and dogwood to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Rockbridge County lies within the Shenandoah Valley and Appalachia — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Rockbridge County holds more than one microclimate.
Soils and elevations shift across Rockbridge County, so your frost dates and drainage aren't the county average. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Quick Facts
USDA Zones
7a
Last Hard Freeze (28°F)
Mar 11
County normal — light frosts run a few weeks later
First Hard Freeze (28°F)
Nov 25
County normal — light frosts arrive a few weeks earlier
County Area
382K acres
Hardiness Zone Range
Zone maps are averages across Rockbridge County. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil in Rockbridge County
Across Rockbridge County, the ground is predominantly Ultisols, where Frederick, Oriskany, and Watahala are the most extensive named soil series. The soil is generally well drained with a silt loam surface. Topsoil pH runs about 4.8–5.8, strongly acidic. Rainfall drains through hydrologic group B soils.
Soil order
Ultisols
Drainage
Well drained
Prime farmland
7%
Hydric soils
0%
Soil still varies lot by lot — soil types explained.
What Grows in Rockbridge County
Plants matched to Rockbridge County's USDA zones 7a — each links to its full growing profile.
Is it too late to plant in Rockbridge County?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 25 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Growing Challenges in Virginia
What an experienced grower plans around here — each one has a move.
Heavy Piedmont red clay requires amendment
Red clay turns from obstacle to asset with compost and time — and a raised bed lets you harvest while it happens.
Humidity and heat in summer promote disease
Space for airflow, water mornings at the base, and plant resistant varieties — your extension's humid-summer playbook.
Deer pressure is heavy in suburban and rural areas
A proper fence settles it; outside the fence, genuinely deer-resistant plants are the next best defense.
For cultivar selection, pest pressure, and planting-time guidance specific to Virginia, the Virginia Cooperative Extension is the authoritative local source.
Safe to Grow Here?
What the federal record shows across Rockbridge County — and how to grow with it.
We checked the federal record across Rockbridge County — 140 documented sites across 7 of the 9 source types we track.
The most significant on record: 1 Superfund site. 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 Rockbridge 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.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Sources Checked
across Rockbridge County
Severity Distribution
across Rockbridge County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Rockbridge County, Underground Storage Tanks runs higher than the national average — 102 sites nearby. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Rockbridge County
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Rockbridge County Average
- ●USDA Zones 7a
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Rockbridge County
Pull a site-specific report for your exact address in Rockbridge County, Virginia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Key Growing Facts for Rockbridge County, Virginia
- USDA Hardiness Zones: 7a (USDA PHZM 2023)
- Last Hard Freeze (28°F): Mar 11 (county normal, NOAA 1991–2020 Climate Normals — light frosts can follow for a few weeks)
- First Hard Freeze (28°F): Nov 25 (county normal, NOAA 1991–2020 Climate Normals — light frosts can arrive a few weeks earlier)
- Days Between Hard Freezes: ~259 (county normal, NOAA 1991–2020 Climate Normals)
- County Land Area: 382K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. County boundaries: US Census TIGER/Line 2025.
Frost dates here are the Rockbridge County average. Low spots and tree cover move them by days on any one yard — see your exact frost windows.
Frequently Asked Questions
What hardiness zone is Rockbridge County, Virginia?
Rockbridge County sits in USDA hardiness zone 7a, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
Is it too late to plant in Rockbridge County?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 25 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
When does frost risk typically end in Rockbridge County?
The last hard freeze (28°F) in Rockbridge County typically lands around Mar 11, per NOAA 1991–2020 climate normals — an earlier marker than the light-frost dates many planting charts quote. That marks the hard freeze, not the last light frost — light frosts can still bite for a few more weeks, so tender transplants usually wait another 2–3 weeks.
How long is the growing season in Rockbridge County?
Measured between 28°F hard freezes, Rockbridge County sees about 259 frost-free days — roughly Mar 11 through Nov 25, per NOAA 1991–2020 climate normals. Tender crops get a somewhat shorter practical window, since lighter frosts reach a few weeks past the hard-freeze dates on both ends.
What vegetables grow in Rockbridge County?
Rockbridge County's zone 7a supports a wide range — strong performers include Tomato, Grape, Peanut, Dogwood, and Apple. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Rockbridge County, really?
Officially, Rockbridge County sits in USDA zone 7a (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Rockbridge County?
The federal record around Rockbridge County is a meaningful one — 140 documented sites — 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.
Just moved to Rockbridge County — what should I know before planting?
Start with three facts. Rockbridge County sits in USDA zone 7a, which sets what survives winter; the last 28°F hard freeze typically clears around Mar 11, with about 259 frost-free days to work with (NOAA 1991–2020 climate normals); and 140 documented sites sit on the federal record here, so a soil test before food beds is the smart first step. From there, matching plants to your actual soil and sun is the fun part.
Everything on this page is a Rockbridge County average. Your yard writes its own version — 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.