Jasper County, in South Carolina, sits in USDA hardiness zone 9a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Among the crops suited to this profile: peach, okra, muscadine grape, and palmetto. The site-level story — soil, sun, drainage — decides the rest.
Jasper County lies within the Lowcountry and Tidewater & Chesapeake — a regional growing area with its own character.
Grounded in USDA PHZM 2023 · Growable Ground suitability scoring
Jasper County holds more than one microclimate.
Soils and elevations shift across Jasper County, so your frost dates and drainage aren't the county average. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Quick Facts
USDA Zones
9a
Last Frost (state avg.)
Mar 1 - Apr 10
First Frost (state avg.)
Oct 20 - Nov 20
County Area
419K acres
Hardiness Zone Range
Growing Season
Zone maps are averages across Jasper County. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil in Jasper County
Across Jasper County, the ground is predominantly Ultisols, where Argent, Santee, and Bladen are the most extensive named soil series. The soil is generally poorly drained with a fine sandy loam surface. Topsoil pH runs about 4.8–5.5, strongly acidic. Rainfall drains through hydrologic group C/D soils.
Soil order
Ultisols
Drainage
Poorly drained
Prime farmland
8%
Hydric soils
59%
Soil still varies lot by lot — soil types explained.
What Grows in Jasper County
Plants matched to Jasper County's USDA zones 9a — each links to its full growing profile.
Growing Challenges in South Carolina
What an experienced grower plans around here — each one has a move.
Red Piedmont clay requires amendment for drainage
Compost opens red clay over time; a raised bed opens it today — both together is the Piedmont standard.
High heat and humidity promote diseases
Wide spacing, morning base-watering, and resistant varieties keep the humid summer honest — extension keeps the lists.
Hurricane risk along the coast
Coastal beds favor wind-tough perennials and well-staked young trees before the storm season.
For cultivar selection, pest pressure, and planting-time guidance specific to South Carolina, the Clemson Cooperative Extension is the authoritative local source.
Safe to Grow Here?
What the federal record shows across Jasper County — and how to grow with it.
We checked the federal record across Jasper County — 208 documented sites across 5 of the 9 source types we track.
The most significant on record: 1 Superfund site. Sites tracked in EPA's Superfund program — from assessment-stage CERCLIS entries to confirmed National Priorities List cleanup sites.
There's a meaningful federal record across Jasper County — worth a look before you plant food, not a reason to hold back from growing. Proximity to a documented site is information, not a diagnosis of any one yard. A soil test before new food beds is the sensible precaution here, and the map shows exactly which sites sit where, so you can see what's actually near you.
Sources: EPA, USGS — 1.8M documented sites tracked nationwide across 9 federal source types.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Sources Checked
across Jasper County
Severity Distribution
across Jasper County
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Jasper County, Underground Storage Tanks runs higher than the national average — 146 sites nearby. 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 Jasper County
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Your Specific Parcel Matters
Jasper County Average
- ●USDA Zones 9a
- ●Generic soil type for the area
- ●State-average frost dates
YOUR Parcel
- ✓Your exact hardiness zone
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your parcel in Jasper County
Pull a site-specific report for your exact address in Jasper County, South Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources analyzed in seconds
Key Growing Facts for Jasper County, South Carolina
- USDA Hardiness Zones: 9a (USDA PHZM 2023)
- Last Spring Frost (state avg.): Mar 1 - Apr 10 (NOAA 30-Year Climate Normals)
- First Fall Frost (state avg.): Oct 20 - Nov 20 (NOAA 30-Year Climate Normals)
- County Land Area: 419K acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. County boundaries: US Census TIGER/Line 2025.
Frost dates here are the Jasper County average. Low spots and tree cover move them by days on any one yard — see your exact frost windows.
Frequently Asked Questions
What hardiness zone is Jasper County, South Carolina?
Jasper County sits in USDA hardiness zone 9a, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.
When does frost risk typically end in Jasper County?
Jasper County follows South Carolina's statewide frost window: last spring frost around Mar 1 - Apr 10 and first fall frost around Oct 20 - Nov 20, per NOAA 30-year climate normals (1991–2020). Frost dates shift with elevation and local microclimate, so watch your own site's cold pockets.
What vegetables grow in Jasper County?
Jasper County's zone 9a supports a wide range — strong performers include Peach, Okra, Muscadine Grape, Palmetto, and Fig. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.
Which hardiness zone is Jasper County, really?
Officially, Jasper County sits in USDA zone 9a (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.
Is the soil safe to grow vegetables in Jasper County?
The federal record around Jasper County is a meaningful one — 208 documented sites — 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.
Just moved to Jasper County — what should I know before planting?
Start with three facts. Jasper County sits in USDA zone 9a, which sets what survives winter; the statewide frost window runs about Mar 1 - Apr 10 to Oct 20 - Nov 20 (NOAA 30-year climate normals); and 208 documented sites sit on the federal record here, so a soil test before food beds is the smart first step. From there, matching plants to your actual soil and sun is the fun part.
Everything on this page is a Jasper County average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.
Will It Grow Here?
Zone fit is the first question — each answer below reads South Carolina's frost window, season length, and soil profile against the plant's real requirements.