Cedar Hill, Missouri, sits in USDA hardiness zone 6b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Expect cabbage, hazelnut, lavender, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Cedar 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 Cedar 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 Cedar Hill — soil, climate, flood, and parcel records. How we handle your address.
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Cedar Hill — the short answer
Cedar Hill, Missouri: USDA zone 6b, about 226 days between hard freezes, across 1K acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 25
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~226
- 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 Cedar Hill's average, not your lot's — a low corner or a tree line moves it. Against Cedar Hill's 226-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Cedar Hill
Each reading below is measured for Cedar Hill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCedar Hill runs about 226 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
MeasuredCedar Hill 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 Cedar Hill is in
Cedar Hill sits in the Ozark Highlands — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Cedar Hill's own centroid rather than borrowed from Jefferson County.
What Grows in Cedar Hill
Every plant below cleared Cedar Hill's own zone 6b and its 226-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Cedar Hill?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 25 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 6 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Cedar Hill
Survey cells within 31 miles of Cedar Hill checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 266 miles off. What to watch for.
What's on the federal record near Cedar Hill
Closest first, within ~10 miles of Cedar Hill. Listing isn't leaking, and distance isn't exposure.
- T42N R03E 25BAB1Nitrate · 1200 ft
- QUICKHEETUnderground Storage Tanks · 1300 ft
- T42N R03E 25ABB1Nitrate · 1400 ft
- RENTAL WORKSUnderground Storage Tanks · 1900 ft
- CEDAR HILL CENTRAL OFFICEUnderground Storage Tanks · 1900 ft
- CEDAR HILL GARAGEUnderground Storage Tanks · 2000 ft
- BIG RIVER AMBULANCE DISTRICTUnderground Storage Tanks · 2500 ft
- CEDAR HILL SERVICEUnderground Storage Tanks · 2500 ft
- CIRCLE K #1602Underground Storage Tanks · 2600 ft
- EXPRESS MART CEDAR HILLUnderground Storage Tanks · 0.5 mi
- NORMAN GOAD CONSTRUCTION COMPANYUnderground Storage Tanks · 0.8 mi
- HOUSE SPRINGSUnderground Storage Tanks · 1.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Cedar 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 Cedar Hill.
Total Sites
236
within ~10 miles of Cedar Hill
Risk Level
High
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Cedar Hill
Severity Distribution
within ~10 miles of Cedar Hill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Cedar Hill, two things run higher than the national average within ~10 miles of Cedar Hill — PFAS (5 sites) and Nitrate (94 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Cedar 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 Cedar Hill average
Your land is one point inside Cedar Hill
Everything above resolves to Cedar Hill 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 Cedar Hill Average
Cedar Hill Average
- ●USDA Zones 6b, averaged across Cedar Hill
- ●One soil character for all of Cedar Hill
- ●Frost dates read at Cedar Hill's scale: Mar 25 to Nov 6
YOUR Parcel
- ✓Your exact zone, not Cedar Hill's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Cedar Hill
Pull a site-specific report for your exact address in Cedar Hill, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Cedar Hill averages can't show:
We read public map data around Cedar Hill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Cedar Hill average
How we know this about Cedar Hill
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 Cedar 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 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 Cedar Hill
When does frost risk typically end in Cedar Hill?
The last hard freeze (28°F) in Cedar Hill typically lands around Mar 25, 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 15.
When is the first frost in Cedar Hill?
The first hard freeze (28°F) in Cedar Hill typically arrives around Nov 6, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 23, so the watching starts about Oct 7 — about 226 days after the spring freeze cleared.
How long is the growing season in Cedar Hill?
Measured between 28°F hard freezes, Cedar Hill sees about 226 frost-free days — roughly Mar 25 through Nov 6, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 15 to Oct 23, about 191 days.
Is the soil safe to grow vegetables in Cedar Hill?
The federal record around Cedar Hill runs heavier than most — 236 documented sites, mostly Nitrate entries (94), the nearest Nitrate 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 Cedar Hill?
From about Oct 7 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 6 (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 6. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Cedar Hill's scale — its 6b band and its 226-day season. Your yard writes its own version of Cedar 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 Cedar Hill’s own scale
7 of the readings below were taken at Cedar Hill's own scale — its own ~226-day season between 28°F freezes, the 1,469 acres it covers and 236 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Cedar Hill's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Cedar Hill's own 28°F hard-freeze dates, about Mar 25 and Nov 6 and the ~226-day span between themNOAA 1991–2020 Climate Normals
- 236 documented contamination sites on the federal record near Cedar Hill, the closest Nitrate record about 0.2 miles out from the town centreFederal environmental registers
- Cedar Hill's boundary and the 1,469 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~226-day seasonGrowable Ground crop-matching engine
- The ecoregion at Cedar Hill's own centroid, the Ozark HighlandsUS EPA Level III Ecoregions
- Lanternfly survey cells around Cedar Hill 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 Cedar Hill's 1,469 acres read through its county's SSURGO summaryfrom Jefferson County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Jefferson 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 Jefferson County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Cedar Hill's 1,469 acreswhy one lot differs from the next →
- Which side of Cedar 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 1,469 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate 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 Cedar Hill-wide figureread your own land →
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