Chapel Hill, North Carolina, sits in USDA hardiness zone 8a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
A short list that earns its place here — cabbage, fig, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Chapel Hill, 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 Chapel Hill 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 Chapel Hill — soil, climate, flood, and parcel records. How we handle your address.
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Chapel Hill — the short answer
Chapel Hill, North Carolina: USDA zone 8a, about 240 days between hard freezes, across 14K 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 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~240
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 14K 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 Chapel Hill's average, not your lot's — a low corner or a tree line moves it. Against Chapel Hill's 240-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Chapel Hill
Each reading below is measured for Chapel Hill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredChapel Hill runs about 240 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
MeasuredChapel Hill 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 Chapel Hill is in
Chapel Hill sits in the Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Chapel Hill's own centroid rather than borrowed from Orange County.
What Grows in Chapel Hill
Every plant below cleared Chapel Hill's own zone 8a and its 240-day season. Each card opens that plant's North Carolina profile. How we score.
Is it too late to plant in Chapel Hill?
For most of the year, no — what changes is which crops still fit the days remaining. 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 15 — 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 Chapel Hill
Spotted lanternfly documented 26 miles from Chapel Hill, first recorded 2023. What to watch for.
What's on the federal record near Chapel Hill
Closest first, within ~10 miles of Chapel Hill. Listing isn't leaking, and distance isn't exposure.
- SUNRISE BISCUIT KITCHENUnderground Storage Tanks · 1800 ft
- CIRCLE K 2723089Underground Storage Tanks · 2000 ft
- PEP BOYS STORE # 1624Brownfields · 2200 ft
- WALGREENS #11547Brownfields · 2300 ft
- WALKER'S BPUnderground Storage Tanks · 2300 ft
- CHAPEL HILL PARKS/REC DEPTUnderground Storage Tanks · 2400 ft
- THE UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILLBrownfields · 2600 ft
- PANTRY 3159 DBA ETNAUnderground Storage Tanks · 2600 ft
- LLOYD TIRE & ALIGNMENTBrownfields · 0.7 mi
- 828 MLK BLVD PROPERTYSuperfund · 0.7 mi
- RUN-IN-JIMSUnderground Storage Tanks · 0.7 mi
- HILLHAVEN CONVALESCENT CTRUnderground Storage Tanks · 0.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Chapel Hill'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 Chapel Hill.
Total Sites
844
within ~10 miles of Chapel Hill
Risk Level
Elevated
Highest-severity
16 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Chapel Hill
Severity Distribution
within ~10 miles of Chapel Hill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Chapel Hill, Superfund runs higher than the national average — 16 sites within ~10 miles of Chapel Hill. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Chapel Hill
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 Chapel Hill average
Your land is one point inside Chapel Hill
Everything above resolves to Chapel Hill as a whole — one PHZM band and one 28°F frost record, read across 14K 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 Chapel Hill Average
Chapel Hill Average
- ●USDA Zones 8a, averaged across Chapel Hill
- ●One soil character for all of Chapel Hill
- ●Frost dates read at Chapel Hill's scale: Mar 20 to Nov 15
YOUR Parcel
- ✓Your exact zone, not Chapel Hill's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Chapel Hill
Pull a site-specific report for your exact address in Chapel Hill, North Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Chapel Hill averages can't show:
We read public map data around Chapel Hill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Chapel Hill average
How we know this about Chapel Hill
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 Chapel Hill’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 Chapel Hill
When does frost risk typically end in Chapel Hill?
The last hard freeze (28°F) in Chapel Hill 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 Chapel Hill?
The first hard freeze (28°F) in Chapel Hill typically arrives around Nov 15, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 1, so the watching starts about Oct 16 — about 240 days after the spring freeze cleared.
How long is the growing season in Chapel Hill?
Measured between 28°F hard freezes, Chapel Hill sees about 240 frost-free days — roughly Mar 20 through Nov 15, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 10 to Nov 1, about 205 days.
Is the soil safe to grow vegetables in Chapel Hill?
The federal record around Chapel Hill is a meaningful one — 844 documented sites, mostly Underground Storage Tanks entries (494), 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 Chapel Hill?
From about Oct 16 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 15 (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 15. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Chapel Hill's scale — its 8a band and its 240-day season. Your yard writes its own version of Chapel Hill'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 Chapel Hill’s own scale
7 of the readings below were taken at Chapel Hill's own scale — its own ~240-day season between 28°F freezes, the 13,885 acres it covers and 844 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Chapel Hill's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Chapel Hill's own 28°F hard-freeze dates, about Mar 20 and Nov 15 and the ~240-day span between themNOAA 1991–2020 Climate Normals
- 844 documented contamination sites on the federal record near Chapel Hill, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Chapel Hill's boundary and the 13,885 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~240-day seasonGrowable Ground crop-matching engine
- The ecoregion at Chapel Hill's own centroid, the PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Chapel Hilllydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Chapel Hill's 13,885 acres read through its county's SSURGO summaryfrom Orange County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Orange 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 Orange County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Chapel Hill's 13,885 acreswhy one lot differs from the next →
- Which side of Chapel Hill you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 13,885 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 Chapel Hill-wide figureread your own land →