Adams Run, South Carolina, sits in USDA hardiness zone 9a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Growers here do well with artichoke, fig, california poppy, and cabbage — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Adams Run, 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 Adams Run 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 Adams Run — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Adams Run — the short answer
Adams Run, South Carolina: USDA zone 9a, about 320 days between hard freezes, across 900 acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 1
- Charleston County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 18
- Charleston County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~320
- Charleston County normal — NOAA 1991–2020, nearest to this town
- Town area
- 900 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 Charleston County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Adams Run's average, not your lot's — a low corner or a tree line moves it. Against Adams Run's 320-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Adams Run
Each reading below is measured for Adams Run itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsAdams Run runs about 320 days between hard freezes (read from Charleston County, the closest normal to Adams Run) — 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
MeasuredAdams Run 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 Adams Run is in
Adams Run sits in the Middle Atlantic Coastal Plain — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Adams Run's own centroid, and it is not what its county reads: Charleston County is mostly Southern Coastal Plain. The wider page above you is answering a different question about different ground.
What Grows in Adams Run
Every plant below cleared Adams Run's own zone 9a and its 320-day season. Each card opens that plant's South Carolina profile. How we score.
Is it too late to plant in Adams Run?
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 Jan 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 18 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
Documented around Adams Run
Survey cells within 31 miles of Adams Run checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 176 miles off. What to watch for.
What's on the federal record near Adams Run
Closest first, within ~10 miles of Adams Run. Listing isn't leaking, and distance isn't exposure.
- CADDENS GROCERYUnderground Storage Tanks · 700 ft
- JOHN GRANT'S GROCERYUnderground Storage Tanks · 1.0 mi
- GARDEN MARKET GROCERYUnderground Storage Tanks · 1.0 mi
- ONE STOPUnderground Storage Tanks · 1.1 mi
- CANADYS GROCERYUnderground Storage Tanks · 2.3 mi
- D&N GROCERYUnderground Storage Tanks · 2.8 mi
- ROXBURY GROCERYUnderground Storage Tanks · 3.0 mi
- STOLLER CHEMICAL COUnderground Storage Tanks · 3.1 mi
- STOLLER CHEMICAL COMPANY INCORPORATEDBrownfields · 3.3 mi
- ACE BASIN NATIONAL WILDLIFE REFUGE HQUnderground Storage Tanks · 3.5 mi
- FORMER PARKERS FERRY SECT SHEDUnderground Storage Tanks · 3.6 mi
- PARKERS FERRY RD SERVICE STATIONUnderground Storage Tanks · 3.9 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Adams Run'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 Adams Run.
Total Sites
96
within ~10 miles of Adams Run
Risk Level
Moderate
Highest-severity
4 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Adams Run
Severity Distribution
within ~10 miles of Adams Run
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in Adams Run
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 Adams Run average
Your land is one point inside Adams Run
Everything above resolves to Adams Run as a whole — one PHZM band, read across 900 acres, with hard-freeze dates borrowed from Charleston 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 Adams Run Average
Adams Run Average
- ●USDA Zones 9a, averaged across Adams Run
- ●One soil character for all of Adams Run
- ●Frost dates read at Adams Run's scale: Feb 1 to Dec 18
YOUR Parcel
- ✓Your exact zone, not Adams Run's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Adams Run
Pull a site-specific report for your exact address in Adams Run, South Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Adams Run averages can't show:
We read public map data around Adams Run — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Adams Run average
How we know this about Adams Run
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 Charleston 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 Adams Run
When does frost risk typically end in Adams Run?
The last hard freeze (28°F) in Adams Run typically lands around Feb 1, 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 22.
When is the first frost in Adams Run?
The first hard freeze (28°F) in Adams Run typically arrives around Dec 18, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Dec 4, so the watching starts about Nov 18 — about 320 days after the spring freeze cleared.
How long is the growing season in Adams Run?
Measured between 28°F hard freezes, Adams Run sees about 320 frost-free days — roughly Feb 1 through Dec 18, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 22 to Dec 4, about 285 days.
Is the soil safe to grow vegetables in Adams Run?
The federal record around Adams Run shows 96 documented sites, mostly Underground Storage Tanks entries (57), the nearest Underground Storage Tanks record about 0.1 miles out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Adams Run?
From about Nov 18 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 18 (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 18. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Adams Run's scale — its 9a band and its 320-day season. Your yard writes its own version of Adams Run'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 Adams Run’s own scale
6 of the readings below were taken at Adams Run's own scale — the 900 acres it covers and 96 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Adams Run's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 96 documented contamination sites on the federal record near Adams Run, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Adams Run's boundary and the 900 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~320-day seasonGrowable Ground crop-matching engine
- Adams Run sits in the Middle Atlantic Coastal Plain — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- Lanternfly survey cells around Adams Run checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Adams Run has no normal of its own, so its county's is the closest measured readfrom Charleston County
- Soil character — no town-scale survey exists, so Adams Run's 900 acres read through its county's SSURGO summaryfrom Charleston County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Charleston 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 Charleston County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Adams Run's 900 acreswhy one lot differs from the next →
- Which side of Adams Run you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 900 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Adams Run-wide figureread your own land →