Cedar Rock, North Carolina, sits in USDA hardiness zone 8a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
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 Cedar Rock, 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 Cedar Rock 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 Cedar Rock — soil, climate, flood, and parcel records. How we handle your address.
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Cedar Rock — the short answer
Cedar Rock, North Carolina: USDA zone 8a, about 236 days between hard freezes, across 730 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 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~236
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 730 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 Cedar Rock's average, not your lot's — a low corner or a tree line moves it. Against Cedar Rock's 236-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Cedar Rock
Each reading below is measured for Cedar Rock itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCedar Rock runs about 236 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
MeasuredCedar Rock 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 Cedar Rock is in
Cedar Rock sits in the Blue Ridge — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Cedar Rock's own centroid rather than borrowed from Caldwell County.
What Grows in Cedar Rock
Every plant below cleared Cedar Rock's own zone 8a and its 236-day season. Each card opens that plant's North Carolina profile. How we score.
Is it too late to plant in Cedar Rock?
Rarely: the season closes in stages, not all at once, and each stage has its crops. 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 11 — 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 Cedar Rock
Survey cells within 31 miles of Cedar Rock checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 47 miles off. What to watch for.
What's on the federal record near Cedar Rock
Closest first, within ~10 miles of Cedar Rock. Listing isn't leaking, and distance isn't exposure.
- BLUE RIDGE LABSBrownfields · 1000 ft
- CEDAR ROCK GOLF & COUNTRY CLUBUnderground Storage Tanks · 0.8 mi
- W & W SUPERMARKETUnderground Storage Tanks · 1.0 mi
- SANDERS ELEC MOTOR SERVICEBrownfields · 1.4 mi
- MEDUSA AGGREGATES CO.Underground Storage Tanks · 1.7 mi
- LENOIR AVIATION CLUB PRIVATEUnderground Storage Tanks · 1.9 mi
- SEALED AIR CORPORATIONUnderground Storage Tanks · 2.4 mi
- HIBRITEN GAS HOUSEUnderground Storage Tanks · 2.4 mi
- LENOIR OPERATION CENTERUnderground Storage Tanks · 2.7 mi
- MAX TAYLOR CONST. CO.Underground Storage Tanks · 2.8 mi
- WATKINS SERVICE CENTERUnderground Storage Tanks · 2.9 mi
- HOLIDAY FOODS 3Underground Storage Tanks · 2.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Cedar Rock'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 Cedar Rock.
Total Sites
411
within ~10 miles of Cedar Rock
Risk Level
Elevated
Highest-severity
8 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Cedar Rock
Severity Distribution
within ~10 miles of Cedar Rock
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Cedar Rock, two things run higher than the national average within ~10 miles of Cedar Rock — Toxics Release Inventory (45 sites) and Superfund (8 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Check your specific parcel in Cedar Rock
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 Cedar Rock average
Your land is one point inside Cedar Rock
Everything above resolves to Cedar Rock as a whole — one PHZM band and one 28°F frost record, read across 730 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 Cedar Rock Average
Cedar Rock Average
- ●USDA Zones 8a, averaged across Cedar Rock
- ●One soil character for all of Cedar Rock
- ●Frost dates read at Cedar Rock's scale: Mar 20 to Nov 11
YOUR Parcel
- ✓Your exact zone, not Cedar Rock's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Cedar Rock
Pull a site-specific report for your exact address in Cedar Rock, North Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Cedar Rock averages can't show:
We read public map data around Cedar Rock — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Cedar Rock average
How we know this about Cedar Rock
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 Cedar Rock’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 Cedar Rock
When does frost risk typically end in Cedar Rock?
The last hard freeze (28°F) in Cedar Rock 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 Cedar Rock?
The first hard freeze (28°F) in Cedar Rock typically arrives around Nov 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 28, so the watching starts about Oct 12 — about 236 days after the spring freeze cleared.
How long is the growing season in Cedar Rock?
Measured between 28°F hard freezes, Cedar Rock sees about 236 frost-free days — roughly Mar 20 through Nov 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 10 to Oct 28, about 201 days.
Is the soil safe to grow vegetables in Cedar Rock?
The federal record around Cedar Rock is a meaningful one — 411 documented sites, mostly Underground Storage Tanks entries (258), the nearest Brownfields record about 0.2 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 Cedar Rock?
From about Oct 12 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 11 (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 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Cedar Rock's scale — its 8a band and its 236-day season. Your yard writes its own version of Cedar Rock'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 Cedar Rock’s own scale
7 of the readings below were taken at Cedar Rock's own scale — its own ~236-day season between 28°F freezes, the 730 acres it covers and 411 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Cedar Rock's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Cedar Rock's own 28°F hard-freeze dates, about Mar 20 and Nov 11 and the ~236-day span between themNOAA 1991–2020 Climate Normals
- 411 documented contamination sites on the federal record near Cedar Rock, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Cedar Rock's boundary and the 730 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~236-day seasonGrowable Ground crop-matching engine
- The ecoregion at Cedar Rock's own centroid, the Blue RidgeUS EPA Level III Ecoregions
- Lanternfly survey cells around Cedar Rock checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Cedar Rock's 730 acres read through its county's SSURGO summaryfrom Caldwell County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Caldwell 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 Caldwell County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Cedar Rock's 730 acreswhy one lot differs from the next →
- Which side of Cedar Rock you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 730 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Cedar Rock-wide figureread your own land →