Effingham, Kansas, sits in USDA hardiness zone 6a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Growers here do well with cabbage, hazelnut, lavender, and collard greens — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in Effingham, 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 Effingham 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 Effingham — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Effingham — the short answer
Effingham, Kansas: USDA zone 6a, about 211 days between hard freezes, across 396 acres of city.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~211
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 396 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 Effingham's average, not your lot's — a low corner or a tree line moves it. Against Effingham's 211-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Effingham
Each reading below is measured for Effingham itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredEffingham runs about 211 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
MeasuredEffingham 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 Effingham is in
Effingham sits in the Western Corn Belt Plains — EPA Level III, inside the wider Great Plains. That is read at Effingham's own centroid rather than borrowed from Atchison County.
What Grows in Effingham
Every plant below cleared Effingham's own zone 6a and its 211-day season. Each card opens that plant's Kansas profile. How we score.
Is it too late to plant in Effingham?
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 Nov 1 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Effingham
Closest first, within ~10 miles of Effingham. Listing isn't leaking, and distance isn't exposure.
- JACKSON FARMERS INCUnderground Storage Tanks · 350 ft
- MAIN STREET FOOD & FUEL, LLCUnderground Storage Tanks · 350 ft
- MCFARLAND, CALVIN E.Underground Storage Tanks · 400 ft
- FREDERICK SVCBrownfields · 750 ft
- USD #377Underground Storage Tanks · 2000 ft
- 06S 18E 22BCA 01Nitrate · 2100 ft
- 06S 18E 22BCD 01Nitrate · 0.5 mi
- 06S 19E 23BCA 01Nitrate · 1.0 mi
- 06S 18E 21BBA 01Nitrate · 1.0 mi
- 06S 18E 23AAB 01Nitrate · 1.5 mi
- 06S 18E 27DAD 01Nitrate · 1.9 mi
- 06S 18E 12CC 01Nitrate · 2.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Effingham'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 Effingham.
Total Sites
137
within ~10 miles of Effingham
Risk Level
Moderate
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Effingham
Severity Distribution
within ~10 miles of Effingham
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Effingham, Nitrate runs higher than the national average — 122 sites within ~10 miles of Effingham. 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 Effingham
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 Effingham average
Your land is one point inside Effingham
Everything above resolves to Effingham as a whole — one PHZM band and one 28°F frost record, read across 396 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 Effingham Average
Effingham Average
- ●USDA Zones 6a, averaged across Effingham
- ●One soil character for all of Effingham
- ●Frost dates read at Effingham's scale: Apr 4 to Nov 1
YOUR Parcel
- ✓Your exact zone, not Effingham's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Effingham
Pull a site-specific report for your exact address in Effingham, Kansas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Effingham averages can't show:
We read public map data around Effingham — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Effingham average
How we know this about Effingham
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 Effingham’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 Effingham
When does frost risk typically end in Effingham?
The last hard freeze (28°F) in Effingham 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 Effingham?
The first hard freeze (28°F) in Effingham typically arrives around Nov 1, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 18, so the watching starts about Oct 2 — about 211 days after the spring freeze cleared.
How long is the growing season in Effingham?
Measured between 28°F hard freezes, Effingham sees about 211 frost-free days — roughly Apr 4 through Nov 1, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 25 to Oct 18, about 176 days.
Is the soil safe to grow vegetables in Effingham?
The federal record around Effingham shows 137 documented sites, mostly Nitrate entries (122), the nearest Underground Storage Tanks record under a tenth of a mile 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 Effingham?
From about Oct 2 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 1 (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 1. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Effingham's scale — its 6a band and its 211-day season. Your yard writes its own version of Effingham'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 Effingham’s own scale
6 of the readings below were taken at Effingham's own scale — its own ~211-day season between 28°F freezes, the 396 acres it covers and 137 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Effingham's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Effingham's own 28°F hard-freeze dates, about Apr 4 and Nov 1 and the ~211-day span between themNOAA 1991–2020 Climate Normals
- 137 documented contamination sites on the federal record near Effingham, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Effingham's boundary and the 396 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~211-day seasonGrowable Ground crop-matching engine
- The ecoregion at Effingham'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 Effingham's 396 acres read through its county's SSURGO summaryfrom Atchison County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Atchison 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 Atchison County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Effingham's 396 acreswhy one lot differs from the next →
- Which side of Effingham you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 396 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Effingham-wide figureread your own land →
More in Kansas
Wider growing context
What grows across KansasEffingham sits outside our named growing regions, so Kansas as a whole is its closest context here.
Nearby growing guides