Mount Croghan, South Carolina, sits in USDA hardiness zones 8a-9a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
These conditions suit peach, okra, muscadine grape, and palmetto — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Mount Croghan, 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 Mount Croghan lot. 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
8a-9a
Last Hard Freeze (28°F)
Jan 23
Town normal — light frosts run a few weeks later
First Frost (state avg.)
Oct 20 - Nov 20
Town Area
486 acres
Hardiness Zone Range
Growing Season (statewide frost window)
Zone maps are averages across Mount Croghan. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.
Soil varies lot by lot — soil types explained.
What Grows in Mount Croghan
Plants matched to Mount Croghan's USDA zones 8a-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.
Environmental Intelligence
Understanding what's nearby helps you make informed decisions about where and how to grow.
Sources Checked
within ~10 miles of Mount Croghan
Severity Distribution
within ~10 miles of Mount Croghan
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Mount Croghan, Underground Storage Tanks runs higher than the national average — 86 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 Mount Croghan
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
Mount Croghan Average
- ●USDA Zones 8a-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 specific parcel in Mount Croghan
Pull a site-specific report for your exact address in Mount Croghan, 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 Mount Croghan, South Carolina
- USDA Hardiness Zones: 8a-9a (USDA PHZM 2023)
- Last Hard Freeze (28°F): Jan 23 (town normal, NOAA 1991–2020 Climate Normals — light frosts can follow for a few weeks)
- First Fall Frost (state avg.): Oct 20 - Nov 20 (NOAA 30-Year Climate Normals)
- Land Area: 486 acres (US Census TIGER 2025)
Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. Boundaries: US Census TIGER/Line 2025.
Frequently Asked Questions
What hardiness zone is Mount Croghan, South Carolina?
Mount Croghan sits in USDA hardiness zones 8a-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 Mount Croghan?
The last hard freeze (28°F) in Mount Croghan typically lands around Jan 23, per NOAA 1991–2020 climate normals — an earlier marker than the light-frost dates many planting charts quote. That marks the hard freeze, not the last light frost — light frosts can still bite for a few more weeks, so tender transplants usually wait another 2–3 weeks.
What vegetables grow in Mount Croghan?
Mount Croghan's zones 8a-9a support 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 Mount Croghan, really?
Officially, Mount Croghan sits in USDA zones 8a-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 Mount Croghan?
The federal record around Mount Croghan is a meaningful one — 111 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.
How do I protect my plants from frost in Mount Croghan?
As the season closes around South Carolina's first fall frost near Oct 20 - Nov 20 (NOAA 30-year climate normals (1991–2020)), a few moves buy time: cover tender plants with floating row cover or an old sheet on still, clear nights, water the soil the afternoon before a freeze so it holds warmth overnight, and harvest frost-tender crops like tomatoes, peppers, and basil before the first hard night. Hardy greens and root crops shrug off light frost and often sweeten after it, so leave them in.
Everything on this page is a Mount Croghan 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.