Stem, North Carolina, sits in USDA hardiness zone 8a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
These conditions suit cabbage, fig, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Stem, 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 Stem 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 Stem — soil, climate, flood, and parcel records. How we handle your address.
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Stem — the short answer
Stem, North Carolina: USDA zone 8a, about 242 days between hard freezes, across 793 acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 19
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 16
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~242
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 793 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 Stem's average, not your lot's — a low corner or a tree line moves it. Against Stem's 242-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Stem
Each reading below is measured for Stem itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredStem runs about 242 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
MeasuredStem 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 Stem is in
Stem sits in the Piedmont — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Stem's own centroid rather than borrowed from Granville County.
What Grows in Stem
Every plant below cleared Stem's own zone 8a and its 242-day season. Each card opens that plant's North Carolina profile. How we score.
Is it too late to plant in Stem?
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 Feb 19; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 19 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 16 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
Documented around Stem
Spotted lanternfly documented 25 miles from Stem, first recorded 2023. What to watch for.
What's on the federal record near Stem
Closest first, within ~10 miles of Stem. Listing isn't leaking, and distance isn't exposure.
- TRIANGLE D MART #1Underground Storage Tanks · 1300 ft
- COUNTRY CORNERUnderground Storage Tanks · 1600 ft
- STEM FOURWAY CORPORATIONUnderground Storage Tanks · 1700 ft
- SOUTH GRANVILLE WTR&SEWER AUTHORITYPFAS · 0.9 mi
- MULE SHOE SUPPLY COUnderground Storage Tanks · 1.4 mi
- 56 GROCERY 219Underground Storage Tanks · 1.5 mi
- HESTER COUNTRY STOREUnderground Storage Tanks · 2.4 mi
- BLUELINX CORPORATIONUnderground Storage Tanks · 2.5 mi
- J R TIRE & AUTOMOTIVE INCUnderground Storage Tanks · 3.0 mi
- NCDA-FOOD DISTRIBUTION DIVISIONUnderground Storage Tanks · 3.0 mi
- ROSEMART #2Underground Storage Tanks · 3.1 mi
- MURDOCH CENTERUnderground Storage Tanks · 3.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Stem'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 Stem.
Sources Checked
within ~10 miles of Stem
Severity Distribution
within ~10 miles of Stem
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Stem, Toxics Release Inventory runs higher than the national average — 22 sites within ~10 miles of Stem. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in Stem
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 Stem average
Your land is one point inside Stem
Everything above resolves to Stem as a whole — one PHZM band and one 28°F frost record, read across 793 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 Stem Average
Stem Average
- ●USDA Zones 8a, averaged across Stem
- ●One soil character for all of Stem
- ●Frost dates read at Stem's scale: Mar 19 to Nov 16
YOUR Parcel
- ✓Your exact zone, not Stem's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Stem
Pull a site-specific report for your exact address in Stem, North Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Stem averages can't show:
We read public map data around Stem — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Stem average
How we know this about Stem
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 Stem’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 Stem
When does frost risk typically end in Stem?
The last hard freeze (28°F) in Stem typically lands around Mar 19, 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 9.
When is the first frost in Stem?
The first hard freeze (28°F) in Stem typically arrives around Nov 16, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 2, so the watching starts about Oct 17 — about 242 days after the spring freeze cleared.
How long is the growing season in Stem?
Measured between 28°F hard freezes, Stem sees about 242 frost-free days — roughly Mar 19 through Nov 16, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 9 to Nov 2, about 207 days.
Is the soil safe to grow vegetables in Stem?
The federal record around Stem is a meaningful one — 178 documented sites, mostly Underground Storage Tanks entries (94), 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 Stem?
From about Oct 17 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 16 (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 16. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Stem's scale — its 8a band and its 242-day season. Your yard writes its own version of Stem'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 Stem’s own scale
7 of the readings below were taken at Stem's own scale — its own ~242-day season between 28°F freezes, the 793 acres it covers and 178 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Stem's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Stem's own 28°F hard-freeze dates, about Mar 19 and Nov 16 and the ~242-day span between themNOAA 1991–2020 Climate Normals
- 178 documented contamination sites on the federal record near Stem, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Stem's boundary and the 793 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~242-day seasonGrowable Ground crop-matching engine
- The ecoregion at Stem's own centroid, the PiedmontUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Stemlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Stem's 793 acres read through its county's SSURGO summaryfrom Granville County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Granville 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 Granville County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Stem's 793 acreswhy one lot differs from the next →
- Which side of Stem you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 793 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 Stem-wide figureread your own land →
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