Red Hill, South Carolina, sits in USDA hardiness zone 8b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Reliable performers under these conditions include cabbage, fig, california poppy, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Red 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 Red 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 Red Hill — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Red Hill — the short answer
Red Hill, South Carolina: USDA zone 8b, about 277 days between hard freezes, across 7K acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 2
- Horry County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 4
- Horry County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~277
- Horry County normal — NOAA 1991–2020, nearest to this town
- Town area
- 7K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Horry County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Red Hill's average, not your lot's — a low corner or a tree line moves it. Against Red Hill's 277-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Red Hill
Each reading below is measured for Red Hill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsRed Hill runs about 277 days between hard freezes (read from Horry County, the closest normal to Red Hill) — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredRed Hill sits in USDA hardiness zone 8b.
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 Red Hill is in
Red Hill sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Red Hill's own centroid rather than borrowed from Horry County.
What Grows in Red Hill
Every plant below cleared Red Hill's own zone 8b and its 277-day season. Each card opens that plant's South Carolina profile. How we score.
Is it too late to plant in Red Hill?
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 2; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 4 — long-season crops need about 90 days of runway, quick greens only 30. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
Documented around Red Hill
Survey cells within 31 miles of Red Hill checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 72 miles off. What to watch for.
What's on the federal record near Red Hill
Closest first, within ~10 miles of Red Hill. Listing isn't leaking, and distance isn't exposure.
- CIRCLE K 2723150Underground Storage Tanks · 2000 ft
- CIRCLE K 2720908Underground Storage Tanks · 2100 ft
- ATLANTIC UROLOGY CLINICS LLCBrownfields · 2200 ft
- BURNING RIDGE GOLF COURSEUnderground Storage Tanks · 2600 ft
- RED HILL TEXACOUnderground Storage Tanks · 0.5 mi
- CIRCLE K 3187Underground Storage Tanks · 0.6 mi
- GRAND STRAND WATER & SEWER AUTHORITYUnderground Storage Tanks · 0.6 mi
- SCOTCHMAN 25Underground Storage Tanks · 0.6 mi
- INTERNATIONAL PAPER COUnderground Storage Tanks · 0.7 mi
- COASTAL CANCER CENTERBrownfields · 0.8 mi
- QUAIL CREEK GOLF CLUBUnderground Storage Tanks · 0.8 mi
- COASTAL CAROLINA UNIVERSITY-HACKLER GOLF COURSEBrownfields · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Red 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 Red Hill.
Total Sites
677
within ~10 miles of Red Hill
Risk Level
Elevated
Highest-severity
4 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Red Hill
Severity Distribution
within ~10 miles of Red Hill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Red Hill, Underground Storage Tanks runs higher than the national average — 421 sites within ~10 miles of Red Hill. 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 Red 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 Red Hill average
Your land is one point inside Red Hill
Everything above resolves to Red Hill as a whole — one PHZM band, read across 7K acres, with hard-freeze dates borrowed from Horry County’s record because no 30-year normal resolves at this town’s own centroid. 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 Red Hill Average
Red Hill Average
- ●USDA Zones 8b, averaged across Red Hill
- ●One soil character for all of Red Hill
- ●Frost dates read at Red Hill's scale: Mar 2 to Dec 4
YOUR Parcel
- ✓Your exact zone, not Red Hill's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Red Hill
Pull a site-specific report for your exact address in Red Hill, South Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Red Hill averages can't show:
We read public map data around Red Hill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Red Hill average
How we know this about Red 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 Horry County’s record, because none resolves here; 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 Red Hill
When does frost risk typically end in Red Hill?
The last hard freeze (28°F) in Red Hill typically lands around Mar 2, 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 Mar 23.
When is the first frost in Red Hill?
The first hard freeze (28°F) in Red Hill typically arrives around Dec 4, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 20, so the watching starts about Nov 4 — about 277 days after the spring freeze cleared.
How long is the growing season in Red Hill?
Measured between 28°F hard freezes, Red Hill sees about 277 frost-free days — roughly Mar 2 through Dec 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 23 to Nov 20, about 242 days.
Is the soil safe to grow vegetables in Red Hill?
The federal record around Red Hill is a meaningful one — 677 documented sites, mostly Underground Storage Tanks entries (421), the nearest Underground Storage Tanks record about 0.4 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 Red Hill?
From about Nov 4 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 Dec 4 (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 Dec 4. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Red Hill's scale — its 8b band and its 277-day season. Your yard writes its own version of Red 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 Red Hill’s own scale
6 of the readings below were taken at Red Hill's own scale — the 7,016 acres it covers and 677 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Red Hill's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 677 documented contamination sites on the federal record near Red Hill, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
- Red Hill's boundary and the 7,016 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~277-day seasonGrowable Ground crop-matching engine
- The ecoregion at Red Hill's own centroid, the Middle Atlantic Coastal PlainUS EPA Level III Ecoregions
- Lanternfly survey cells around Red Hill checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Red Hill has no normal of its own, so its county's is the closest measured readfrom Horry County
- Soil character — no town-scale survey exists, so Red Hill's 7,016 acres read through its county's SSURGO summaryfrom Horry County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Horry County
- The growing challenges every South Carolina grower plans around — written at state scale, so they stay on the state guidefrom South Carolina
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Horry County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Red Hill's 7,016 acreswhy one lot differs from the next →
- Which side of Red 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 7,016 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.4 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 Red Hill-wide figureread your own land →