Conception Junction, Missouri, sits in USDA hardiness zone 6a — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
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 Conception Junction, 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 Conception Junction 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 Conception Junction — soil, climate, flood, and parcel records. How we handle your address.
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Conception Junction — the short answer
Conception Junction, Missouri: USDA zone 6a, about 208 days between hard freezes, across 202 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~208
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 202 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 Conception Junction's average, not your lot's — a low corner or a tree line moves it. Against Conception Junction's 208-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Conception Junction
Each reading below is measured for Conception Junction itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredConception Junction runs about 208 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
MeasuredConception Junction 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 Conception Junction is in
Conception Junction sits in the Western Corn Belt Plains — EPA Level III, inside the wider Great Plains. That is read at Conception Junction's own centroid rather than borrowed from Nodaway County.
What Grows in Conception Junction
Every plant below cleared Conception Junction's own zone 6a and its 208-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Conception Junction?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Mar 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 5 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 30 — 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 Conception Junction
Closest first, within ~10 miles of Conception Junction. Listing isn't leaking, and distance isn't exposure.
- T63N R34W 11CDD1Nitrate · 0.7 mi
- T63N R33W 18CCB1Nitrate · 1.4 mi
- JERMAIN GROCERY--ROBERT L. PROTZMANUnderground Storage Tanks · 1.6 mi
- T63N R34W 25BBNitrate · 2.5 mi
- BEDISONUnderground Storage Tanks · 4.7 mi
- T64N R34W 13Nitrate · 5.7 mi
- G & G SERVICEUnderground Storage Tanks · 5.9 mi
- MARLIN F. MEYERCAFO · 5.9 mi
- MFAUnderground Storage Tanks · 7.3 mi
- NODAWAY COUNTY PWSD 1PFAS · 7.9 mi
- NODAWAY WORTH ELECTRIC COOP INCUnderground Storage Tanks · 8.2 mi
- MDOC, MARYVILLE TREATMENT CENTER WWTFBrownfields · 8.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Conception Junction'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 Conception Junction.
Total Sites
48
within ~10 miles of Conception Junction
Risk Level
Moderate
Highest-severity
7 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Conception Junction
Severity Distribution
within ~10 miles of Conception Junction
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Conception Junction, two things run higher than the national average within ~10 miles of Conception Junction — Toxics Release Inventory (7 sites) and Nitrate (14 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Conception Junction
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 Conception Junction average
Your land is one point inside Conception Junction
Everything above resolves to Conception Junction as a whole — one PHZM band and one 28°F frost record, read across 202 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 Conception Junction Average
Conception Junction Average
- ●USDA Zones 6a, averaged across Conception Junction
- ●One soil character for all of Conception Junction
- ●Frost dates read at Conception Junction's scale: Apr 5 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Conception Junction's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Conception Junction
Pull a site-specific report for your exact address in Conception Junction, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Conception Junction averages can't show:
We read public map data around Conception Junction — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Conception Junction average
How we know this about Conception Junction
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 Conception Junction’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 Conception Junction
When does frost risk typically end in Conception Junction?
The last hard freeze (28°F) in Conception Junction typically lands around Apr 5, 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 26.
When is the first frost in Conception Junction?
The first hard freeze (28°F) in Conception Junction typically arrives around Oct 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 16, so the watching starts about Sep 30 — about 208 days after the spring freeze cleared.
How long is the growing season in Conception Junction?
Measured between 28°F hard freezes, Conception Junction sees about 208 frost-free days — roughly Apr 5 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 26 to Oct 16, about 173 days.
Is the soil safe to grow vegetables in Conception Junction?
The federal record around Conception Junction shows 48 documented sites, mostly Underground Storage Tanks entries (17), the nearest Nitrate record about 0.7 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 Conception Junction?
From about Sep 30 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 30 (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 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Conception Junction's scale — its 6a band and its 208-day season. Your yard writes its own version of Conception Junction'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 Conception Junction’s own scale
6 of the readings below were taken at Conception Junction's own scale — its own ~208-day season between 28°F freezes, the 202 acres it covers and 48 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Conception Junction's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Conception Junction's own 28°F hard-freeze dates, about Apr 5 and Oct 30 and the ~208-day span between themNOAA 1991–2020 Climate Normals
- 48 documented contamination sites on the federal record near Conception Junction, the closest Nitrate record about 0.7 miles out from the town centreFederal environmental registers
- Conception Junction's boundary and the 202 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~208-day seasonGrowable Ground crop-matching engine
- The ecoregion at Conception Junction's own centroid, the Western Corn Belt PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Conception Junction's 202 acres read through its county's SSURGO summaryfrom Nodaway County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Nodaway 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 Nodaway County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Conception Junction's 202 acreswhy one lot differs from the next →
- Which side of Conception Junction you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 202 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 0.7 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 Conception Junction-wide figureread your own land →