Fenton, Missouri, sits in USDA hardiness zone 7a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect cabbage, hazelnut, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Fenton, 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 Fenton 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 Fenton — soil, climate, flood, and parcel records. How we handle your address.
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Fenton — the short answer
Fenton, Missouri: USDA zone 7a, about 232 days between hard freezes, across 4K acres of city.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 23
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 10
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~232
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 4K 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 7a is Fenton's average, not your lot's — a low corner or a tree line moves it. Against Fenton's 232-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Fenton
Each reading below is measured for Fenton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredFenton runs about 232 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
MeasuredFenton sits in USDA hardiness zone 7a.
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 Fenton is in
Fenton sits in the Ozark Highlands — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Fenton's own centroid, and it is not what its county reads: St. Louis County is mostly Interior River Valleys and Hills. The wider page above you is answering a different question about different ground.
What Grows in Fenton
Every plant below cleared Fenton's own zone 7a and its 232-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Fenton?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 23; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 23 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 10 — 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 Fenton
Survey cells within 31 miles of Fenton checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 253 miles off. What to watch for.
What's on the federal record near Fenton
Closest first, within ~10 miles of Fenton. Listing isn't leaking, and distance isn't exposure.
- T44N R05E 27BAD1Nitrate · 1200 ft
- BLACK KNIGHT ENTERPRISES LLD DBA HUBBS MACHINEBrownfields · 2000 ft
- CONTROL DEVICES, LLCToxics Release Inventory · 2500 ft
- ST LOUIS MARBLE COToxics Release Inventory · 2500 ft
- TAYLOR VISUAL IMPRESSIONSBrownfields · 2600 ft
- UNIVERSAL FLAVOR CORPToxics Release Inventory · 2600 ft
- TEAM INDUSTRIAL SERVICESBrownfields · 2600 ft
- DOLL AIR CONDITIONINGUnderground Storage Tanks · 0.5 mi
- LEACH PAINTING COMPANYBrownfields · 0.5 mi
- INFINIUM PHARMACYBrownfields · 0.5 mi
- T44N R05E 22CAD1Nitrate · 0.5 mi
- JMAXX LLCBrownfields · 0.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Fenton'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 Fenton.
Sources Checked
within ~10 miles of Fenton
Severity Distribution
within ~10 miles of Fenton
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
Check your specific parcel in Fenton
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 Fenton average
Your land is one point inside Fenton
Everything above resolves to Fenton as a whole — one PHZM band and one 28°F frost record, read across 4K 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 Fenton Average
Fenton Average
- ●USDA Zones 7a, averaged across Fenton
- ●One soil character for all of Fenton
- ●Frost dates read at Fenton's scale: Mar 23 to Nov 10
YOUR Parcel
- ✓Your exact zone, not Fenton's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Fenton
Pull a site-specific report for your exact address in Fenton, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Fenton averages can't show:
We read public map data around Fenton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Fenton average
How we know this about Fenton
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 Fenton’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 Fenton
When does frost risk typically end in Fenton?
The last hard freeze (28°F) in Fenton typically lands around Mar 23, 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 13.
When is the first frost in Fenton?
The first hard freeze (28°F) in Fenton typically arrives around Nov 10, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 27, so the watching starts about Oct 11 — about 232 days after the spring freeze cleared.
How long is the growing season in Fenton?
Measured between 28°F hard freezes, Fenton sees about 232 frost-free days — roughly Mar 23 through Nov 10, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 13 to Oct 27, about 197 days.
Is the soil safe to grow vegetables in Fenton?
The federal record around Fenton runs heavier than most — 1,895 documented sites, mostly Underground Storage Tanks entries (1,028), 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 Fenton?
From about Oct 11 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 10 (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 10. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Fenton's scale — its 7a band and its 232-day season. Your yard writes its own version of Fenton'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 Fenton’s own scale
7 of the readings below were taken at Fenton's own scale — its own ~232-day season between 28°F freezes, the 4,013 acres it covers and 1,895 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Fenton's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Fenton's own 28°F hard-freeze dates, about Mar 23 and Nov 10 and the ~232-day span between themNOAA 1991–2020 Climate Normals
- 1,895 documented contamination sites on the federal record near Fenton, the closest Nitrate record about 0.2 miles out from the town centreFederal environmental registers
- Fenton's boundary and the 4,013 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~232-day seasonGrowable Ground crop-matching engine
- Fenton sits in the Ozark Highlands — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- Lanternfly survey cells around Fenton 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 Fenton's 4,013 acres read through its county's SSURGO summaryfrom St. Louis County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom St. Louis 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 St. Louis County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Fenton's 4,013 acreswhy one lot differs from the next →
- Which side of Fenton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,013 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 Fenton-wide figureread your own land →
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