Concordia, Kansas, sits in USDA hardiness zone 6b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Reliable performers under these conditions include cabbage, hazelnut, lavender, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Concordia, 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 Concordia 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 Concordia — soil, climate, flood, and parcel records. How we handle your address.
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Concordia — the short answer
Concordia, Kansas: USDA zone 6b, about 210 days between hard freezes, across 3K acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 31
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~210
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 3K 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 Concordia's average, not your lot's — a low corner or a tree line moves it. Against Concordia's 210-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Concordia
Each reading below is measured for Concordia itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredConcordia runs about 210 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
MeasuredConcordia 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 Concordia is in
Concordia sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Concordia's own centroid rather than borrowed from Cloud County.
What Grows in Concordia
Every plant below cleared Concordia's own zone 6b and its 210-day season. Each card opens that plant's Kansas profile. How we score.
Is it too late to plant in Concordia?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 7; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 4 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 31 — 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 Concordia
Closest first, within ~10 miles of Concordia. Listing isn't leaking, and distance isn't exposure.
- NEWTONS ELECBrownfields · 800 ft
- REX GERARD CONSTRUCTION COUnderground Storage Tanks · 850 ft
- PEPSI-COLA WAREHOUSEUnderground Storage Tanks · 1500 ft
- CONCORDIA AUTO MART INCBrownfields · 1700 ft
- CONCORDIA CHEVROLET/BUICK LLCBrownfields · 2100 ft
- JOHNSON AUTO SERVICEUnderground Storage Tanks · 2400 ft
- BABE HOUSER CHEVROLET-Underground Storage Tanks · 2400 ft
- DON'S PLACEUnderground Storage Tanks · 2400 ft
- FIRST CLASS FORD-MERCURYUnderground Storage Tanks · 2400 ft
- GERARD TANK AND STEEL INCBrownfields · 2600 ft
- FIRST CLASS FORD MERCURYBrownfields · 0.5 mi
- RALPH CHUBBUCK & LILA BRIGGSUnderground Storage Tanks · 0.5 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Concordia'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 Concordia.
Total Sites
161
within ~10 miles of Concordia
Risk Level
Moderate
Highest-severity
4 Toxics Release Inventory facilities
Sources Checked
within ~10 miles of Concordia
Severity Distribution
within ~10 miles of Concordia
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Concordia, Nitrate runs higher than the national average — 80 sites within ~10 miles of Concordia. That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Concordia
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 Concordia average
Your land is one point inside Concordia
Everything above resolves to Concordia as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Concordia Average
Concordia Average
- ●USDA Zones 6b, averaged across Concordia
- ●One soil character for all of Concordia
- ●Frost dates read at Concordia's scale: Apr 4 to Oct 31
YOUR Parcel
- ✓Your exact zone, not Concordia's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Concordia
Pull a site-specific report for your exact address in Concordia, Kansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Concordia averages can't show:
We read public map data around Concordia — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Concordia average
How we know this about Concordia
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 Concordia’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 Concordia
When does frost risk typically end in Concordia?
The last hard freeze (28°F) in Concordia typically lands around Apr 4, 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 25.
When is the first frost in Concordia?
The first hard freeze (28°F) in Concordia typically arrives around Oct 31, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 17, so the watching starts about Oct 1 — about 210 days after the spring freeze cleared.
How long is the growing season in Concordia?
Measured between 28°F hard freezes, Concordia sees about 210 frost-free days — roughly Apr 4 through Oct 31, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 25 to Oct 17, about 175 days.
Is the soil safe to grow vegetables in Concordia?
The federal record around Concordia shows 161 documented sites, mostly Nitrate entries (80), the nearest Brownfields 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 Concordia?
From about Oct 1 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 31 (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 31. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Concordia's scale — its 6b band and its 210-day season. Your yard writes its own version of Concordia'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 Concordia’s own scale
6 of the readings below were taken at Concordia's own scale — its own ~210-day season between 28°F freezes, the 2,883 acres it covers and 161 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Concordia's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Concordia's own 28°F hard-freeze dates, about Apr 4 and Oct 31 and the ~210-day span between themNOAA 1991–2020 Climate Normals
- 161 documented contamination sites on the federal record near Concordia, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Concordia's boundary and the 2,883 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~210-day seasonGrowable Ground crop-matching engine
- The ecoregion at Concordia's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Concordia's 2,883 acres read through its county's SSURGO summaryfrom Cloud County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Cloud County
- The growing challenges every Kansas grower plans around — written at state scale, so they stay on the state guidefrom Kansas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Cloud County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Concordia's 2,883 acreswhy one lot differs from the next →
- Which side of Concordia you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,883 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Concordia-wide figureread your own land →
More in Kansas
Wider growing context
What grows across KansasConcordia sits outside our named growing regions, so Kansas as a whole is its closest context here.