Ferrum, Virginia, sits in USDA hardiness zone 7b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
These conditions suit cabbage, prickly pear, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Ferrum, 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 Ferrum 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 Ferrum — soil, climate, flood, and parcel records. How we handle your address.
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Ferrum — the short answer
Ferrum, Virginia: USDA zone 7b, about 222 days between hard freezes, across 6K acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 29
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~222
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 6K 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 7b is Ferrum's average, not your lot's — a low corner or a tree line moves it. Against Ferrum's 222-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Ferrum
Each reading below is measured for Ferrum itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredFerrum runs about 222 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
MeasuredFerrum 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 Ferrum is in
Ferrum sits in the Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Ferrum's own centroid rather than borrowed from Franklin County.
What Grows in Ferrum
Every plant below cleared Ferrum's own zone 7b and its 222-day season. Each card opens that plant's Virginia profile. How we score.
Is it too late to plant in Ferrum?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 29 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 6 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
Documented around Ferrum
Spotted lanternfly documented 13 miles from Ferrum, first recorded 2023. What to watch for.
What's on the federal record near Ferrum
Closest first, within ~10 miles of Ferrum. Listing isn't leaking, and distance isn't exposure.
- 30D 1Nitrate · 1.2 mi
- BRAMMER MARVIN J (DECEASED)Underground Storage Tanks · 1.5 mi
- YOUNG STAFFORT MUnderground Storage Tanks · 1.5 mi
- WIMMERS GROCERYUnderground Storage Tanks · 1.5 mi
- LONGBRANCH GROCERYUnderground Storage Tanks · 1.5 mi
- Ferrum Minute MarketUnderground Storage Tanks · 1.5 mi
- FORMER JONES AUTOUnderground Storage Tanks · 1.5 mi
- Happy Pappys GrillUnderground Storage Tanks · 1.5 mi
- FERRUM COLLEGEBrownfields · 1.6 mi
- Ferrum Muffler and AutoUnderground Storage Tanks · 1.6 mi
- ELEGANT CABINETS INC.Brownfields · 1.7 mi
- Leo H Scott Cabinets IncUnderground Storage Tanks · 1.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Ferrum'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 Ferrum.
Total Sites
200
within ~10 miles of Ferrum
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Ferrum
Severity Distribution
within ~10 miles of Ferrum
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Ferrum, two things run higher than the national average within ~10 miles of Ferrum — Underground Storage Tanks (144 sites) and Toxics Release Inventory (14 sites). 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.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Ferrum
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 Ferrum average
Your land is one point inside Ferrum
Everything above resolves to Ferrum as a whole — one PHZM band and one 28°F frost record, read across 6K 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 Ferrum Average
Ferrum Average
- ●USDA Zones 7b, averaged across Ferrum
- ●One soil character for all of Ferrum
- ●Frost dates read at Ferrum's scale: Mar 29 to Nov 6
YOUR Parcel
- ✓Your exact zone, not Ferrum's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Ferrum
Pull a site-specific report for your exact address in Ferrum, Virginia — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Ferrum averages can't show:
We read public map data around Ferrum — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Ferrum average
How we know this about Ferrum
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 Ferrum’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 Ferrum
When does frost risk typically end in Ferrum?
The last hard freeze (28°F) in Ferrum typically lands around Mar 29, 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 19.
When is the first frost in Ferrum?
The first hard freeze (28°F) in Ferrum typically arrives around Nov 6, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 23, so the watching starts about Oct 7 — about 222 days after the spring freeze cleared.
How long is the growing season in Ferrum?
Measured between 28°F hard freezes, Ferrum sees about 222 frost-free days — roughly Mar 29 through Nov 6, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 19 to Oct 23, about 187 days.
Is the soil safe to grow vegetables in Ferrum?
The federal record around Ferrum is a meaningful one — 200 documented sites, mostly Underground Storage Tanks entries (144), the nearest Nitrate record about 1.2 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 Ferrum?
From about Oct 7 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 6 (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 6. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Ferrum's scale — its 7b band and its 222-day season. Your yard writes its own version of Ferrum'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 Ferrum’s own scale
7 of the readings below were taken at Ferrum's own scale — its own ~222-day season between 28°F freezes, the 5,855 acres it covers and 200 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Ferrum's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Ferrum's own 28°F hard-freeze dates, about Mar 29 and Nov 6 and the ~222-day span between themNOAA 1991–2020 Climate Normals
- 200 documented contamination sites on the federal record near Ferrum, the closest Nitrate record about 1.2 miles out from the town centreFederal environmental registers
- Ferrum's boundary and the 5,855 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~222-day seasonGrowable Ground crop-matching engine
- The ecoregion at Ferrum's own centroid, the PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Ferrumlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Ferrum's 5,855 acres read through its county's SSURGO summaryfrom Franklin County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Franklin 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 Franklin County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Ferrum's 5,855 acreswhy one lot differs from the next →
- Which side of Ferrum you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 5,855 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 1.2 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 Ferrum-wide figureread your own land →
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