Graham County, in North Carolina, 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.
Expect cabbage, prickly pear, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Graham County lies within the Blue Ridge and Appalachia — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring · NOAA 1991–2020 Climate Normals
Graham County holds more than one microclimate.
Soils and elevations shift across Graham 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 Graham County — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Graham County — the short answer
Graham County, North Carolina: USDA zone 7b, about 206 days between hard freezes, across 187K acres.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 7
- NOAA 1991–2020 Climate Normals, 28°F
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F
- Days between freezes
- ~206
- NOAA 1991–2020 Climate Normals, 28°F
- County area
- 187K 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 Graham County's average, not your lot's — a low corner or a tree line moves it. Against Graham County's 206-day season, see what your own ground reads.
Heat and winter chill in Graham County
Across a year, Graham County accumulates about 3,333 growing degree days above 50°F, about 1,057 fewer than the middle North Carolina county — ahead of 14 of North Carolina’s 100 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.
Winter banks about 2,372 hours below 45°F, 609 more than the North Carolina middle of 1,763. Chill is what tells a fruit tree its dormancy is over, and it is set by climate rather than by anything you can build.
Grounded in PRISM Climate Group, Oregon State University — 1991–2020 monthly normals
Soil in Graham County
Across Graham County, the ground is predominantly Inceptisols, where Junaluska, Spivey, and Cheoah are the most extensive named soil series. The soil is generally well drained with a channery loam surface. Topsoil pH runs about 4.5–4.8, very strongly acidic. Rainfall drains through hydrologic group B soils.
Soil order
Inceptisols
Drainage
Well drained
Prime farmland
2%
Hydric soils
1%
Soil still varies lot by lot — soil types explained.
How the ground varies across Graham County
The USDA soil survey maps 85% of Graham County as well drained — but another 12% drains differently: 9% somewhat excessively drained, 2% moderately well drained.
Junaluska is the most extensive named soil at 11% of mapped acres, then Spivey (11%) and Cheoah (10%).
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 Graham County
Each reading below is measured for Graham 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 Graham 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 Graham County runs about pH 4.5–4.8, 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
MeasuredGraham County runs about 206 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
MeasuredGraham County 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 Graham County is in
Graham County sits in the Blue Ridge — EPA Level III, inside the wider Eastern Temperate Forests. One consistent ecological setting across the whole county.
What Grows in Graham County
We scored all 1,086 plants against Graham County's own USDA zone 7b and its own 206-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 North Carolina profile.
Is it too late to plant in Graham County?
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 10; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 7 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 30 — 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 Graham County
Survey cells within 31 miles of Graham County checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 51 miles off. What to watch for.
What gets applied to farmland in Graham County
USGS estimates 1,542 lb of 2,4-d on Graham County farmland in 2019, its largest by weight, ahead of Metolachlor & Metolachlor-s (360 lb) and Metolachlor-s (330 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 Graham County — and how to grow with it.
We checked the federal record across Graham County — 60 documented sites across 6 of the 9 source types we track.
The most significant on record: 1 Superfund site (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 Graham 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 Graham County
Closest first, across Graham County. Listing isn't leaking, and distance isn't exposure.
- CHEOAH HYDROELECTRIC PROJECTUnderground Storage Tanks · 0.6 mi
- EVERETT WILLIAMS GROCERYUnderground Storage Tanks · 0.6 mi
- JOANNA'S GROCERYUnderground Storage Tanks · 0.6 mi
- JOHNNY'S CARB & TUNE & AMOCOUnderground Storage Tanks · 0.6 mi
- TALLAUFF SERVICE STATIONUnderground Storage Tanks · 0.6 mi
- PERKINS BODY SHOPBrownfields · 0.6 mi
- CHEOAH RANGER DISTRICT -WORK CTRUnderground Storage Tanks · 1.0 mi
- SKYWAY CONVENIENCE STOREUnderground Storage Tanks · 1.1 mi
- SANTEETLAH BOAT DOCKUnderground Storage Tanks · 1.6 mi
- BIG D 270Underground Storage Tanks · 1.6 mi
- RALEIGH ROAD FURNITURE CORP.Underground Storage Tanks · 1.6 mi
- ODOMS BUILDING SUPPLYUnderground Storage Tanks · 1.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Graham 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 Graham County.
Total Sites
60
across Graham County
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
across Graham County
Severity Distribution
across Graham County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Graham County, Underground Storage Tanks runs higher than the national average — 47 sites across Graham County. That's not a problem with your land — it's information about 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 Graham 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 Graham County average
Your land is one point inside Graham County
Everything above resolves to Graham County as a whole — one PHZM band and one county frost record, read across 187K 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 Graham County Average
Graham County Average
- ●USDA Zones 7b, averaged across Graham County
- ●One soil character for all of Graham County
- ●Frost dates read at Graham County's scale: Apr 7 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Graham County's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Graham County
Pull a site-specific report for your exact address in Graham County, North Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Graham County averages can't show:
We read public map data around Graham County — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Graham County average
How we know this about Graham 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 Graham County carries no record of its own, the figure is inherited and labelled — the resolution ledger below names each.
Common questions about Graham County
When does frost risk typically end in Graham County?
The last hard freeze (28°F) in Graham County typically lands around Apr 7, 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 28.
How long is the growing season in Graham County?
Measured between 28°F hard freezes, Graham County sees about 206 frost-free days — roughly Apr 7 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 28 to Oct 16, about 171 days.
Is the soil safe to grow vegetables in Graham County?
The federal record around Graham County is a meaningful one — 60 documented sites, mostly Underground Storage Tanks entries (47), the nearest Underground Storage Tanks record about 0.6 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 Graham County's scale — its 7b band and its 206-day season. Your yard writes its own version of Graham 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 North Carolina's frost window, season length, and soil profile against the plant's real requirements.
What this page reads at Graham County’s own scale
8 of the readings below were taken at Graham County's own scale — its own ~206-day span between 28°F freezes, the 3 most extensive soil series mapped here and 60 documented sites inside its boundary; one is borrowed from a wider read, named and linked below.
Measured here
- Graham County's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Graham County's own 28°F hard-freeze dates and its ~206-day span between themNOAA 1991–2020 Climate Normals
- The soil order, drainage, surface pH, and the 3 most extensive named soil series mapped in Graham CountyUSDA NRCS SSURGO
- 60 documented contamination sites inside the county boundary, distance-sorted from its center — the closest Underground Storage Tanks record about 0.6 miles outFederal environmental registers
- Graham County's boundary and the 186,862 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~206-day seasonGrowable Ground crop-matching engine
- Graham County sitting wholly inside the Blue RidgeUS EPA Level III Ecoregions
- Which agricultural compounds go onto Graham County farmland, and roughly how muchUSGS NAWQA EPest county estimates
Inherited from a wider read
- The growing challenges every North Carolina grower plans around — written at state scale, so they stay on the state guidefrom North Carolina
What this page can’t tell you
- How the season shifts across Graham County — the ~206 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 Graham County's 186,862 acreswhy one lot differs from the next →
- Which of those 60 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 Graham Countyread your own land →