Center City, Minnesota, sits in USDA hardiness zone 4b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
A short list that earns its place here — cabbage, cranberry, turkish rocket, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Center City, 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 Center City 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 Center City — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Center City — the short answer
Center City, Minnesota: USDA zone 4b, about 170 days between hard freezes, across 378 acres of city.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 28
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 15
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~170
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 378 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 4b is Center City's average, not your lot's — a low corner or a tree line moves it. Against Center City's 170-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Center City
Each reading below is measured for Center City itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCenter City runs about 170 days between hard freezes — a moderate growing season.
There is room for the full run of cool-season crops plus a warm-season main crop, but the calendar is tight enough that a late spring or early fall frost still decides how much finishes.
Time warm-season transplants to your last hard freeze, and a few weeks of season extension turns a near-miss harvest into a sure one.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredCenter City sits in USDA hardiness zone 4b.
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 Center City is in
Center City sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Center City's own centroid rather than borrowed from Chisago County.
What Grows in Center City
Every plant below cleared Center City's own zone 4b and its 170-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Center City?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Mar 31; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 28 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 15 — long-season crops need about 90 days of runway, quick greens only 30. Even past midsummer there is room for a true fall garden here, and garlic planted near the close carries the momentum into next year.
What's on the federal record near Center City
Closest first, within ~10 miles of Center City. Listing isn't leaking, and distance isn't exposure.
- CHISAGO LAKE EVANGELICAL LUTHBrownfields · 500 ft
- MOODY SALES& SERVICEBrownfields · 1800 ft
- CHISAGO COUNTY HIGHWAY DEPARTMENTBrownfields · 2000 ft
- JEFFREY E RIVARD PABrownfields · 2500 ft
- JEFFS SERVICESBrownfields · 2500 ft
- Charles E BensonUnderground Storage Tanks · 2600 ft
- 536544Nitrate · 0.5 mi
- 494964Nitrate · 0.5 mi
- LindstromPFAS · 0.6 mi
- 512540Nitrate · 0.8 mi
- CHASSIS SERVICEBrownfields · 1.0 mi
- Wally Carlson & SonsUnderground Storage Tanks · 1.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Center City'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 Center City.
Total Sites
397
within ~10 miles of Center City
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Center City
Severity Distribution
within ~10 miles of Center City
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Center City, Nitrate runs higher than the national average — 122 sites within ~10 miles of Center City. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around 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 Center City
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 Center City average
Your land is one point inside Center City
Everything above resolves to Center City as a whole — one PHZM band and one 28°F frost record, read across 378 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 Center City Average
Center City Average
- ●USDA Zones 4b, averaged across Center City
- ●One soil character for all of Center City
- ●Frost dates read at Center City's scale: Apr 28 to Oct 15
YOUR Parcel
- ✓Your exact zone, not Center City's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Center City
Pull a site-specific report for your exact address in Center City, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Center City averages can't show:
We read public map data around Center City — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Center City average
How we know this about Center City
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 Center City’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 Center City
When does frost risk typically end in Center City?
The last hard freeze (28°F) in Center City typically lands around Apr 28, 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 May 19.
When is the first frost in Center City?
The first hard freeze (28°F) in Center City typically arrives around Oct 15, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 1, so the watching starts about Sep 15 — about 170 days after the spring freeze cleared.
How long is the growing season in Center City?
Measured between 28°F hard freezes, Center City sees about 170 frost-free days — roughly Apr 28 through Oct 15, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 19 to Oct 1, about 135 days.
Is the soil safe to grow vegetables in Center City?
The federal record around Center City is a meaningful one — 397 documented sites, mostly Brownfields entries (153), the nearest Brownfields record under a tenth of a mile out — so a soil test before new food beds is a sensible precaution here, not a reason to hold back from growing. Remember that proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what sits where.
How do I protect my plants from frost in Center City?
From about Sep 15 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 15 (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 15. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Center City's scale — its 4b band and its 170-day season. Your yard writes its own version of Center City'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 Center City’s own scale
6 of the readings below were taken at Center City's own scale — its own ~170-day season between 28°F freezes, the 378 acres it covers and 397 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Center City's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Center City's own 28°F hard-freeze dates, about Apr 28 and Oct 15 and the ~170-day span between themNOAA 1991–2020 Climate Normals
- 397 documented contamination sites on the federal record near Center City, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Center City's boundary and the 378 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~170-day seasonGrowable Ground crop-matching engine
- The ecoregion at Center City's own centroid, the North Central Hardwood ForestsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Center City's 378 acres read through its county's SSURGO summaryfrom Chisago County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Chisago County
- The growing challenges every Minnesota grower plans around — written at state scale, so they stay on the state guidefrom Minnesota
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Chisago County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Center City's 378 acreswhy one lot differs from the next →
- Which side of Center City you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 378 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 Center City-wide figureread your own land →
More in Minnesota
Wider growing context
What grows across MinnesotaCenter City sits outside our named growing regions, so Minnesota as a whole is its closest context here.
Nearby growing guides