Bluffton, South Carolina, sits in USDA hardiness zone 9a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Reliable performers under these conditions include artichoke, fig, california poppy, and cabbage; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Bluffton, 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 Bluffton 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 Bluffton — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Bluffton — the short answer
Bluffton, South Carolina: USDA zone 9a, about 317 days between hard freezes, across 33K acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 3
- Beaufort County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 17
- Beaufort County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~317
- Beaufort County normal — NOAA 1991–2020, nearest to this town
- Town area
- 33K 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 Beaufort County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Bluffton's average, not your lot's — a low corner or a tree line moves it. Against Bluffton's 317-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Bluffton
Each reading below is measured for Bluffton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsBluffton runs about 317 days between hard freezes (read from Beaufort County, the closest normal to Bluffton) — 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
MeasuredBluffton sits in USDA hardiness zone 9a.
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 Bluffton is in
Bluffton sits in the Southern Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Bluffton's own centroid rather than borrowed from Beaufort County.
What Grows in Bluffton
Every plant below cleared Bluffton's own zone 9a and its 317-day season. Each card opens that plant's South Carolina profile. How we score.
Is it too late to plant in Bluffton?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Jan 6; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 17 — 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.
What's on the federal record near Bluffton
Closest first, within ~10 miles of Bluffton. Listing isn't leaking, and distance isn't exposure.
- PALMETTO BLUFFUnderground Storage Tanks · 1.0 mi
- RT'S MARKETUnderground Storage Tanks · 2.6 mi
- H E MCCRAKEN MIDDLE SCHOOLUnderground Storage Tanks · 2.9 mi
- DOMINION ENERGY SC BLUFFTONBrownfields · 3.2 mi
- BFT- 100Nitrate · 3.3 mi
- WILLIAMS SUPER MARKETUnderground Storage Tanks · 3.4 mi
- PARKERS 43Underground Storage Tanks · 3.4 mi
- PARKERS AT NEW RIVERSIDEUnderground Storage Tanks · 3.5 mi
- MORRIS VARIETY SHOPUnderground Storage Tanks · 3.6 mi
- MESSEX ONE STOP SERVICE INCUnderground Storage Tanks · 3.6 mi
- PARKERS 33Underground Storage Tanks · 3.7 mi
- KROGER #703-11Brownfields · 4.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Bluffton'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 Bluffton.
Total Sites
165
within ~10 miles of Bluffton
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Bluffton
Severity Distribution
within ~10 miles of Bluffton
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Bluffton
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 Bluffton average
Your land is one point inside Bluffton
Everything above resolves to Bluffton as a whole — one PHZM band, read across 33K acres, with hard-freeze dates borrowed from Beaufort 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 Bluffton Average
Bluffton Average
- ●USDA Zones 9a, averaged across Bluffton
- ●One soil character for all of Bluffton
- ●Frost dates read at Bluffton's scale: Feb 3 to Dec 17
YOUR Parcel
- ✓Your exact zone, not Bluffton's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Bluffton
Pull a site-specific report for your exact address in Bluffton, South Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Bluffton averages can't show:
We read public map data around Bluffton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Bluffton average
How we know this about Bluffton
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 Beaufort 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 Bluffton
When does frost risk typically end in Bluffton?
The last hard freeze (28°F) in Bluffton typically lands around Feb 3, 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 Feb 24.
When is the first frost in Bluffton?
The first hard freeze (28°F) in Bluffton typically arrives around Dec 17, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Dec 3, so the watching starts about Nov 17 — about 317 days after the spring freeze cleared.
How long is the growing season in Bluffton?
Measured between 28°F hard freezes, Bluffton sees about 317 frost-free days — roughly Feb 3 through Dec 17, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 24 to Dec 3, about 282 days.
Is the soil safe to grow vegetables in Bluffton?
The federal record around Bluffton is a meaningful one — 165 documented sites, mostly Underground Storage Tanks entries (94), the nearest Underground Storage Tanks record about 1.0 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 Bluffton?
From about Nov 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 Dec 17 (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 17. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Bluffton's scale — its 9a band and its 317-day season. Your yard writes its own version of Bluffton'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 Bluffton’s own scale
5 of the readings below were taken at Bluffton's own scale — the 33,363 acres it covers and 165 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Bluffton's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 165 documented contamination sites on the federal record near Bluffton, the closest Underground Storage Tanks record about 1.0 miles out from the town centreFederal environmental registers
- Bluffton's boundary and the 33,363 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~317-day seasonGrowable Ground crop-matching engine
- The ecoregion at Bluffton's own centroid, the Southern Coastal PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Bluffton has no normal of its own, so its county's is the closest measured readfrom Beaufort County
- Soil character — no town-scale survey exists, so Bluffton's 33,363 acres read through its county's SSURGO summaryfrom Beaufort County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Beaufort 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 Beaufort County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Bluffton's 33,363 acreswhy one lot differs from the next →
- Which side of Bluffton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 33,363 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 1.0 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 Bluffton-wide figureread your own land →