Barnett, Missouri, sits in USDA hardiness zone 6b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Well-matched crops include cabbage, hazelnut, lavender, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in Barnett, 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 Barnett 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 Barnett — soil, climate, flood, and parcel records. How we handle your address.
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Barnett — the short answer
Barnett, Missouri: USDA zone 6b, about 229 days between hard freezes, across 175 acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~229
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 175 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 Barnett's average, not your lot's — a low corner or a tree line moves it. Against Barnett's 229-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Barnett
Each reading below is measured for Barnett itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredBarnett runs about 229 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
MeasuredBarnett 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 Barnett is in
Barnett sits in the Ozark Highlands — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Barnett's own centroid rather than borrowed from Morgan County.
What Grows in Barnett
Every plant below cleared Barnett's own zone 6b and its 229-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Barnett?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 27; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 27 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 11 — 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 Barnett
Survey cells within 31 miles of Barnett checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 333 miles off. What to watch for.
What's on the federal record near Barnett
Closest first, within ~10 miles of Barnett. Listing isn't leaking, and distance isn't exposure.
- T42N R16W 22DCD1Nitrate · 650 ft
- BARNETTUnderground Storage Tanks · 1300 ft
- Tole and Skelton DiggingsMining · 0.6 mi
- Strong DiggingsMining · 0.6 mi
- STEVE ROBINETTCAFO · 1.1 mi
- Excelsior DiggingsMining · 2.7 mi
- Ulrey TractMining · 3.2 mi
- Kelsey DiggingsMining · 3.5 mi
- LLOYD GROVESUnderground Storage Tanks · 4.1 mi
- Spurlock DigMining · 4.1 mi
- TOMPKINS LIVESTOCK FARMS INC.CAFO · 4.2 mi
- Madole DiggingsMining · 4.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Barnett'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 Barnett.
Total Sites
134
within ~10 miles of Barnett
Risk Level
High
Highest-severity
7 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Barnett
Severity Distribution
within ~10 miles of Barnett
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Barnett, two things run higher than the national average within ~10 miles of Barnett — CAFO (11 sites) and Mining (54 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Barnett
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 Barnett average
Your land is one point inside Barnett
Everything above resolves to Barnett as a whole — one PHZM band and one 28°F frost record, read across 175 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 Barnett Average
Barnett Average
- ●USDA Zones 6b, averaged across Barnett
- ●One soil character for all of Barnett
- ●Frost dates read at Barnett's scale: Mar 27 to Nov 11
YOUR Parcel
- ✓Your exact zone, not Barnett's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Barnett
Pull a site-specific report for your exact address in Barnett, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Barnett averages can't show:
We read public map data around Barnett — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Barnett average
How we know this about Barnett
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 Barnett’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 Barnett
When does frost risk typically end in Barnett?
The last hard freeze (28°F) in Barnett typically lands around Mar 27, 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 17.
When is the first frost in Barnett?
The first hard freeze (28°F) in Barnett typically arrives around Nov 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 28, so the watching starts about Oct 12 — about 229 days after the spring freeze cleared.
How long is the growing season in Barnett?
Measured between 28°F hard freezes, Barnett sees about 229 frost-free days — roughly Mar 27 through Nov 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 17 to Oct 28, about 194 days.
Is the soil safe to grow vegetables in Barnett?
The federal record around Barnett runs heavier than most — 134 documented sites, mostly Mining entries (54), the nearest Nitrate record about 0.1 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 Barnett?
From about Oct 12 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 11 (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 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Barnett's scale — its 6b band and its 229-day season. Your yard writes its own version of Barnett'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 Barnett’s own scale
7 of the readings below were taken at Barnett's own scale — its own ~229-day season between 28°F freezes, the 175 acres it covers and 134 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Barnett's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Barnett's own 28°F hard-freeze dates, about Mar 27 and Nov 11 and the ~229-day span between themNOAA 1991–2020 Climate Normals
- 134 documented contamination sites on the federal record near Barnett, the closest Nitrate record about 0.1 miles out from the town centreFederal environmental registers
- Barnett's boundary and the 175 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~229-day seasonGrowable Ground crop-matching engine
- The ecoregion at Barnett's own centroid, the Ozark HighlandsUS EPA Level III Ecoregions
- Lanternfly survey cells around Barnett 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 Barnett's 175 acres read through its county's SSURGO summaryfrom Morgan County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Morgan 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 Morgan County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Barnett's 175 acreswhy one lot differs from the next →
- Which side of Barnett you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 175 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 0.1 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 Barnett-wide figureread your own land →
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