Clarktown, Ohio, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
These conditions suit cabbage, hazelnut, lavender, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Clarktown, 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 Clarktown 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 Clarktown — soil, climate, flood, and parcel records. How we handle your address.
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Clarktown — the short answer
Clarktown, Ohio: USDA zone 6b, about 198 days between hard freezes, across 1K acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 13
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~198
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 6b is Clarktown's average, not your lot's — a low corner or a tree line moves it. Against Clarktown's 198-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Clarktown
Each reading below is measured for Clarktown itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredClarktown runs about 198 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredClarktown sits in USDA hardiness zone 6b.
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 Clarktown is in
Clarktown sits in the Western Allegheny Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Clarktown's own centroid rather than borrowed from Scioto County.
What Grows in Clarktown
Every plant below cleared Clarktown's own zone 6b and its 198-day season. Each card opens that plant's Ohio profile. How we score.
Is it too late to plant in Clarktown?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 16; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 13 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 28 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
Documented around Clarktown
Survey cells within 31 miles of Clarktown checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 74 miles off. What to watch for.
What's on the federal record near Clarktown
Closest first, within ~10 miles of Clarktown. Listing isn't leaking, and distance isn't exposure.
- ARRICK'S PENNZOILUnderground Storage Tanks · 500 ft
- KENNY''S CONVENIENT MARTUnderground Storage Tanks · 900 ft
- MUSTAIN MUFFLER AND BRAKEBrownfields · 1900 ft
- CALLS GARAGEBrownfields · 0.7 mi
- BI LO # 26Underground Storage Tanks · 2.4 mi
- PENDLETON'S COLLISION REPAIRBrownfields · 2.5 mi
- SHOEMAKER SERVICE CTR INCUnderground Storage Tanks · 2.5 mi
- SHOEMAKERS SERVICE CENTERBrownfields · 2.5 mi
- MULETOWN MINI MART LLCUnderground Storage Tanks · 2.7 mi
- BENNETTS COLLISION REPAIR CENTERBrownfields · 2.7 mi
- BENNETT'S CUSTOM TRUCKSBrownfields · 2.7 mi
- FAMILY DOLLAR #5980Brownfields · 2.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Clarktown'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 Clarktown.
Total Sites
290
within ~10 miles of Clarktown
Risk Level
Elevated
Highest-severity
4 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Clarktown
Severity Distribution
within ~10 miles of Clarktown
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Clarktown, two things run higher than the national average within ~10 miles of Clarktown — Superfund (4 sites) and Underground Storage Tanks (182 sites). That's not a problem with your land — it's information about it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Clarktown
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 Clarktown average
Your land is one point inside Clarktown
Everything above resolves to Clarktown as a whole — one PHZM band and one 28°F frost record, read across 1K acres. 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 Clarktown Average
Clarktown Average
- ●USDA Zones 6b, averaged across Clarktown
- ●One soil character for all of Clarktown
- ●Frost dates read at Clarktown's scale: Apr 13 to Oct 28
YOUR Parcel
- ✓Your exact zone, not Clarktown's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Clarktown
Pull a site-specific report for your exact address in Clarktown, Ohio — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Clarktown averages can't show:
We read public map data around Clarktown — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Clarktown average
How we know this about Clarktown
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 Clarktown’s own record; 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 Clarktown
When does frost risk typically end in Clarktown?
The last hard freeze (28°F) in Clarktown typically lands around Apr 13, 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 May 4.
When is the first frost in Clarktown?
The first hard freeze (28°F) in Clarktown typically arrives around Oct 28, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 14, so the watching starts about Sep 28 — about 198 days after the spring freeze cleared.
How long is the growing season in Clarktown?
Measured between 28°F hard freezes, Clarktown sees about 198 frost-free days — roughly Apr 13 through Oct 28, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 4 to Oct 14, about 163 days.
Is the soil safe to grow vegetables in Clarktown?
The federal record around Clarktown is a meaningful one — 290 documented sites, mostly Underground Storage Tanks entries (182), the nearest Underground Storage Tanks record under a tenth of a mile 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 Clarktown?
From about Sep 28 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 Oct 28 (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 Oct 28. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Clarktown's scale — its 6b band and its 198-day season. Your yard writes its own version of Clarktown'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 Clarktown’s own scale
7 of the readings below were taken at Clarktown's own scale — its own ~198-day season between 28°F freezes, the 1,308 acres it covers and 290 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Clarktown's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Clarktown's own 28°F hard-freeze dates, about Apr 13 and Oct 28 and the ~198-day span between themNOAA 1991–2020 Climate Normals
- 290 documented contamination sites on the federal record near Clarktown, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Clarktown's boundary and the 1,308 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~198-day seasonGrowable Ground crop-matching engine
- The ecoregion at Clarktown's own centroid, the Western Allegheny PlateauUS EPA Level III Ecoregions
- Lanternfly survey cells around Clarktown checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Clarktown's 1,308 acres read through its county's SSURGO summaryfrom Scioto County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Scioto County
- The growing challenges every Ohio grower plans around — written at state scale, so they stay on the state guidefrom Ohio
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Scioto County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Clarktown's 1,308 acreswhy one lot differs from the next →
- Which side of Clarktown you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,308 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Clarktown-wide figureread your own land →