Altamahaw, North Carolina, sits in USDA hardiness zone 8a — 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, fig, california poppy, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Altamahaw, 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 Altamahaw 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 Altamahaw — soil, climate, flood, and parcel records. How we handle your address.
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Altamahaw — the short answer
Altamahaw, North Carolina: USDA zone 8a, about 239 days between hard freezes, across 868 acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~239
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 868 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 8a is Altamahaw's average, not your lot's — a low corner or a tree line moves it. Against Altamahaw's 239-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Altamahaw
Each reading below is measured for Altamahaw itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredAltamahaw runs about 239 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
MeasuredAltamahaw sits in USDA hardiness zone 8a.
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 Altamahaw is in
Altamahaw sits in the Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Altamahaw's own centroid rather than borrowed from Alamance County.
What Grows in Altamahaw
Every plant below cleared Altamahaw's own zone 8a and its 239-day season. Each card opens that plant's North Carolina profile. How we score.
Is it too late to plant in Altamahaw?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Feb 20; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 20 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 14 — 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.
Documented around Altamahaw
Spotted lanternfly documented 28 miles from Altamahaw, first recorded 2022. What to watch for.
What's on the federal record near Altamahaw
Closest first, within ~10 miles of Altamahaw. Listing isn't leaking, and distance isn't exposure.
- LEIGHS STOP & SHOPUnderground Storage Tanks · 1800 ft
- WILLIE SAULS & SON PLUMBING, INCUnderground Storage Tanks · 1900 ft
- MONARCH HOSIERY MILLS, INC.Underground Storage Tanks · 0.5 mi
- UNIFI - GLEN RAVEN TOUCH YARN CO LLCToxics Release Inventory · 0.7 mi
- ALTAMAHAW OSSIPEE VOL. FIRE DEPTUnderground Storage Tanks · 1.1 mi
- GLEN RAVEN TRANSPORTATION DIV.Underground Storage Tanks · 1.1 mi
- AM-222 NR OSSIPEE, NC FELSIC METAIGNEOUSNitrate · 1.8 mi
- ELON, TOWN OFPFAS · 1.9 mi
- RICHARDSON S AUTOMOTIVEBrownfields · 2.1 mi
- NORTH CREST MARKETUnderground Storage Tanks · 2.3 mi
- SHAKS EXXONUnderground Storage Tanks · 2.5 mi
- MURRAY BRS. SERVICE STATIONUnderground Storage Tanks · 2.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Altamahaw'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 Altamahaw.
Total Sites
517
within ~10 miles of Altamahaw
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Altamahaw
Severity Distribution
within ~10 miles of Altamahaw
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Altamahaw, Underground Storage Tanks runs higher than the national average — 374 sites within ~10 miles of Altamahaw. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 Altamahaw
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 Altamahaw average
Your land is one point inside Altamahaw
Everything above resolves to Altamahaw as a whole — one PHZM band and one 28°F frost record, read across 868 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 Altamahaw Average
Altamahaw Average
- ●USDA Zones 8a, averaged across Altamahaw
- ●One soil character for all of Altamahaw
- ●Frost dates read at Altamahaw's scale: Mar 20 to Nov 14
YOUR Parcel
- ✓Your exact zone, not Altamahaw's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Altamahaw
Pull a site-specific report for your exact address in Altamahaw, North Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Altamahaw averages can't show:
We read public map data around Altamahaw — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Altamahaw average
How we know this about Altamahaw
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 Altamahaw’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 Altamahaw
When does frost risk typically end in Altamahaw?
The last hard freeze (28°F) in Altamahaw typically lands around Mar 20, 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 10.
When is the first frost in Altamahaw?
The first hard freeze (28°F) in Altamahaw typically arrives around Nov 14, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 31, so the watching starts about Oct 15 — about 239 days after the spring freeze cleared.
How long is the growing season in Altamahaw?
Measured between 28°F hard freezes, Altamahaw sees about 239 frost-free days — roughly Mar 20 through Nov 14, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 10 to Oct 31, about 204 days.
Is the soil safe to grow vegetables in Altamahaw?
The federal record around Altamahaw is a meaningful one — 517 documented sites, mostly Underground Storage Tanks entries (374), the nearest Underground Storage Tanks record about 0.3 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 Altamahaw?
From about Oct 15 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 14 (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 14. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Altamahaw's scale — its 8a band and its 239-day season. Your yard writes its own version of Altamahaw'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 Altamahaw’s own scale
7 of the readings below were taken at Altamahaw's own scale — its own ~239-day season between 28°F freezes, the 868 acres it covers and 517 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Altamahaw's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Altamahaw's own 28°F hard-freeze dates, about Mar 20 and Nov 14 and the ~239-day span between themNOAA 1991–2020 Climate Normals
- 517 documented contamination sites on the federal record near Altamahaw, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Altamahaw's boundary and the 868 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~239-day seasonGrowable Ground crop-matching engine
- The ecoregion at Altamahaw's own centroid, the PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Altamahawlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Altamahaw's 868 acres read through its county's SSURGO summaryfrom Alamance County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Alamance County
- The growing challenges every North Carolina grower plans around — written at state scale, so they stay on the state guidefrom North Carolina
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Alamance County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Altamahaw's 868 acreswhy one lot differs from the next →
- Which side of Altamahaw you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 868 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Altamahaw-wide figureread your own land →
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