Olympia, South Carolina, sits in USDA hardiness zone 8b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
These conditions suit cabbage, fig, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Olympia, 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 Olympia 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 Olympia — soil, climate, flood, and parcel records. How we handle your address.
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Olympia — the short answer
Olympia, South Carolina: USDA zone 8b, about 272 days between hard freezes, across 454 acres of town.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 3
- Richland County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 30
- Richland County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~272
- Richland County normal — NOAA 1991–2020, nearest to this town
- Town area
- 454 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 Richland County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Olympia's average, not your lot's — a low corner or a tree line moves it. Against Olympia's 272-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Olympia
Each reading below is measured for Olympia itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsOlympia runs about 272 days between hard freezes (read from Richland County, the closest normal to Olympia) — 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
MeasuredOlympia 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 Olympia is in
Olympia sits in the Southeastern Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Olympia's own centroid rather than borrowed from Richland County.
What Grows in Olympia
Every plant below cleared Olympia's own zone 8b and its 272-day season. Each card opens that plant's South Carolina profile. How we score.
Is it too late to plant in Olympia?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 30 — 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 Olympia
Survey cells within 31 miles of Olympia checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 106 miles off. What to watch for.
What's on the federal record near Olympia
Closest first, within ~10 miles of Olympia. Listing isn't leaking, and distance isn't exposure.
- TARMAC MID ATLANTICUnderground Storage Tanks · 850 ft
- LINDAU CHEMICALS INCToxics Release Inventory · 1500 ft
- LINDAU CHEMICALS INCUnderground Storage Tanks · 1500 ft
- LINDAU CHEMICALS, INC.Brownfields · 2000 ft
- CONSOLIDATED SYSTEMS INCBrownfields · 2100 ft
- CONSOLIDATED SYSTEMS INCToxics Release Inventory · 2100 ft
- PALMETTO WHOLESALE COMPANYBrownfields · 2100 ft
- UNISOURCE WORLDWIDE INCUnderground Storage Tanks · 2200 ft
- PALMETTO WHOLESALE COMPANYUnderground Storage Tanks · 2300 ft
- UNISOURCE WORLDWIDE INCBrownfields · 2300 ft
- BONITZ INCUnderground Storage Tanks · 2300 ft
- PRECOAT METALSUnderground Storage Tanks · 2600 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Olympia'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 Olympia.
Sources Checked
within ~10 miles of Olympia
Severity Distribution
within ~10 miles of Olympia
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Olympia, Underground Storage Tanks runs higher than the national average — 1,264 sites within ~10 miles of Olympia. 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 Olympia
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 Olympia average
Your land is one point inside Olympia
Everything above resolves to Olympia as a whole — one PHZM band, read across 454 acres, with hard-freeze dates borrowed from Richland 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 Olympia Average
Olympia Average
- ●USDA Zones 8b, averaged across Olympia
- ●One soil character for all of Olympia
- ●Frost dates read at Olympia's scale: Mar 3 to Nov 30
YOUR Parcel
- ✓Your exact zone, not Olympia's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Olympia
Pull a site-specific report for your exact address in Olympia, South Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Olympia averages can't show:
We read public map data around Olympia — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Olympia average
How we know this about Olympia
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 Richland 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 Olympia
When does frost risk typically end in Olympia?
The last hard freeze (28°F) in Olympia typically lands around Mar 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 Mar 24.
When is the first frost in Olympia?
The first hard freeze (28°F) in Olympia typically arrives around Nov 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 16, so the watching starts about Oct 31 — about 272 days after the spring freeze cleared.
How long is the growing season in Olympia?
Measured between 28°F hard freezes, Olympia sees about 272 frost-free days — roughly Mar 3 through Nov 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 24 to Nov 16, about 237 days.
Is the soil safe to grow vegetables in Olympia?
The federal record around Olympia runs heavier than most — 2,037 documented sites, mostly Underground Storage Tanks entries (1,264), the nearest Underground Storage Tanks record about 0.2 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Olympia?
From about Oct 31 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 Nov 30 (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 Nov 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Olympia's scale — its 8b band and its 272-day season. Your yard writes its own version of Olympia'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 Olympia’s own scale
6 of the readings below were taken at Olympia's own scale — the 454 acres it covers and 2,037 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Olympia's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 2,037 documented contamination sites on the federal record near Olympia, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Olympia's boundary and the 454 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~272-day seasonGrowable Ground crop-matching engine
- The ecoregion at Olympia's own centroid, the Southeastern PlainsUS EPA Level III Ecoregions
- Lanternfly survey cells around Olympia checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Olympia has no normal of its own, so its county's is the closest measured readfrom Richland County
- Soil character — no town-scale survey exists, so Olympia's 454 acres read through its county's SSURGO summaryfrom Richland County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Richland 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 Richland County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Olympia's 454 acreswhy one lot differs from the next →
- Which side of Olympia you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 454 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.2 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 Olympia-wide figureread your own land →
More in South Carolina
Growing region
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