Clifton Hill, Missouri, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Crops well matched to these conditions include cabbage, hazelnut, lavender, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Clifton Hill, 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 Clifton Hill 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 Clifton Hill — soil, climate, flood, and parcel records. How we handle your address.
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Clifton Hill — the short answer
Clifton Hill, Missouri: USDA zone 6a, about 216 days between hard freezes, across 112 acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~216
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 112 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 6a is Clifton Hill's average, not your lot's — a low corner or a tree line moves it. Against Clifton Hill's 216-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Clifton Hill
Each reading below is measured for Clifton Hill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredClifton Hill runs about 216 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredClifton Hill sits in USDA hardiness zone 6a.
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 Clifton Hill is in
Clifton Hill sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at Clifton Hill's own centroid rather than borrowed from Randolph County.
What Grows in Clifton Hill
Every plant below cleared Clifton Hill's own zone 6a and its 216-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Clifton Hill?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 31 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 2 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
What's on the federal record near Clifton Hill
Closest first, within ~10 miles of Clifton Hill. Listing isn't leaking, and distance isn't exposure.
- THOMAS HILL ENERGY CENTER-NEMO MINEUnderground Storage Tanks · 1100 ft
- CLIFTON HILL GARAGEUnderground Storage Tanks · 1300 ft
- T54N R16W 15BAB1Nitrate · 3.7 mi
- T54N R16W 09DDD1Nitrate · 4.0 mi
- T54N R16W 02ADD1Nitrate · 5.3 mi
- MANKEN CATTLE CO INCUnderground Storage Tanks · 5.7 mi
- THOMAS HILL ENERGY CTR-PRAIRIE HILLUnderground Storage Tanks · 6.0 mi
- HUNTSVILLE MAINT LOTUnderground Storage Tanks · 6.1 mi
- CUSTOM COMPOSITES CO INCToxics Release Inventory · 6.1 mi
- T53N R17W 01CCD1Nitrate · 6.1 mi
- WESTRAN R-1 SCHOOL DISTRICTUnderground Storage Tanks · 6.2 mi
- HERD'S KAR KAREUnderground Storage Tanks · 6.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Clifton Hill'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 Clifton Hill.
Total Sites
64
within ~10 miles of Clifton Hill
Risk Level
Moderate
Highest-severity
5 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Clifton Hill
Severity Distribution
within ~10 miles of Clifton Hill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Clifton Hill, two things run higher than the national average within ~10 miles of Clifton Hill — CAFO (3 sites) and Nitrate (26 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Clifton Hill
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 Clifton Hill average
Your land is one point inside Clifton Hill
Everything above resolves to Clifton Hill as a whole — one PHZM band and one 28°F frost record, read across 112 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 city 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 Clifton Hill Average
Clifton Hill Average
- ●USDA Zones 6a, averaged across Clifton Hill
- ●One soil character for all of Clifton Hill
- ●Frost dates read at Clifton Hill's scale: Mar 31 to Nov 2
YOUR Parcel
- ✓Your exact zone, not Clifton Hill's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Clifton Hill
Pull a site-specific report for your exact address in Clifton Hill, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Clifton Hill averages can't show:
We read public map data around Clifton Hill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Clifton Hill average
How we know this about Clifton Hill
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’s own centroid; hard-freeze dates from NOAA 1991–2020 28°F normals at Clifton Hill’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 city grain anywhere on this page — there is no city-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 Clifton Hill
When does frost risk typically end in Clifton Hill?
The last hard freeze (28°F) in Clifton Hill typically lands around Mar 31, 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 Apr 21.
When is the first frost in Clifton Hill?
The first hard freeze (28°F) in Clifton Hill typically arrives around Nov 2, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 19, so the watching starts about Oct 3 — about 216 days after the spring freeze cleared.
How long is the growing season in Clifton Hill?
Measured between 28°F hard freezes, Clifton Hill sees about 216 frost-free days — roughly Mar 31 through Nov 2, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 21 to Oct 19, about 181 days.
Is the soil safe to grow vegetables in Clifton Hill?
The federal record around Clifton Hill shows 64 documented sites, mostly Nitrate entries (26), the nearest Underground Storage Tanks record about 0.2 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 Clifton Hill?
From about Oct 3 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 2 (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 2. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Clifton Hill's scale — its 6a band and its 216-day season. Your yard writes its own version of Clifton Hill'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 Clifton Hill’s own scale
6 of the readings below were taken at Clifton Hill's own scale — its own ~216-day season between 28°F freezes, the 112 acres it covers and 64 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Clifton Hill's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Clifton Hill's own 28°F hard-freeze dates, about Mar 31 and Nov 2 and the ~216-day span between themNOAA 1991–2020 Climate Normals
- 64 documented contamination sites on the federal record near Clifton Hill, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Clifton Hill's boundary and the 112 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~216-day seasonGrowable Ground crop-matching engine
- The ecoregion at Clifton Hill's own centroid, the Central Irregular PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Clifton Hill's 112 acres read through its county's SSURGO summaryfrom Randolph County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Randolph County
- The growing challenges every Missouri grower plans around — written at state scale, so they stay on the state guidefrom Missouri
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Randolph County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Clifton Hill's 112 acreswhy one lot differs from the next →
- Which side of Clifton Hill you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 112 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 Clifton Hill-wide figureread your own land →
More in Missouri
Wider growing context
What grows across MissouriClifton Hill sits outside our named growing regions, so Missouri as a whole is its closest context here.
Nearby growing guides