Arden Hills, Minnesota, sits in USDA hardiness zone 5a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Expect cabbage, cranberry, lavender, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Arden Hills, 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 Arden Hills 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 Arden Hills — soil, climate, flood, and parcel records. How we handle your address.
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Arden Hills — the short answer
Arden Hills, Minnesota: USDA zone 5a, about 194 days between hard freezes, across 5K acres of city.
- USDA zone
- 5a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 25
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~194
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 5K 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 5a is Arden Hills's average, not your lot's — a low corner or a tree line moves it. Against Arden Hills's 194-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Arden Hills
Each reading below is measured for Arden Hills itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredArden Hills runs about 194 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
MeasuredArden Hills sits in USDA hardiness zone 5a.
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 Arden Hills is in
Arden Hills sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Arden Hills's own centroid rather than borrowed from Ramsey County.
What Grows in Arden Hills
Every plant below cleared Arden Hills's own zone 5a and its 194-day season. Each card opens that plant's Minnesota profile. How we score.
Is it too late to plant in Arden Hills?
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 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 14 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 25 — long-season crops need about 90 days of runway, quick greens only 30. As the window narrows, the plantings just get faster — fall brassicas, then greens, then garlic to finish.
What's on the federal record near Arden Hills
Closest first, within ~10 miles of Arden Hills. Listing isn't leaking, and distance isn't exposure.
- ROUND LAKE SENIOR LIVINGBrownfields · 2100 ft
- VOCXI HEALTH, INCBrownfields · 0.5 mi
- CARDIAC PACEMAKERS INC, DBA BOSTON SCIENTIFICBrownfields · 0.5 mi
- CARDIAC PACEMAKERS INC, DBA BOSTON SCIENTIFICToxics Release Inventory · 0.5 mi
- RAMSEY COUNTY DEPT OF PUBLIC WORKSBrownfields · 0.6 mi
- ARDEN HILLS CITY OF MAINTENANBrownfields · 0.6 mi
- NESTLE PURINA PETCARE CO ARDEBrownfields · 0.7 mi
- MN DEPT OF MILITARY AFFAIRS/NBrownfields · 0.7 mi
- SMARTALEC INCBrownfields · 0.8 mi
- DESIGNED AND MADE LLCBrownfields · 0.8 mi
- CHALLES MACHINE TOOL - ARDEN HILLSBrownfields · 0.8 mi
- HOOD PACKAGING CORP - ARDEN HILLSBrownfields · 0.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Arden Hills'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 Arden Hills.
Sources Checked
within ~10 miles of Arden Hills
Severity Distribution
within ~10 miles of Arden Hills
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Arden Hills, Brownfields runs higher than the national average — 6,578 sites within ~10 miles of Arden Hills. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Arden Hills
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 Arden Hills average
Your land is one point inside Arden Hills
Everything above resolves to Arden Hills as a whole — one PHZM band and one 28°F frost record, read across 5K 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 Arden Hills Average
Arden Hills Average
- ●USDA Zones 5a, averaged across Arden Hills
- ●One soil character for all of Arden Hills
- ●Frost dates read at Arden Hills's scale: Apr 14 to Oct 25
YOUR Parcel
- ✓Your exact zone, not Arden Hills's 5a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Arden Hills
Pull a site-specific report for your exact address in Arden Hills, Minnesota — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Arden Hills averages can't show:
We read public map data around Arden Hills — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Arden Hills average
How we know this about Arden Hills
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 Arden Hills’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 Arden Hills
When does frost risk typically end in Arden Hills?
The last hard freeze (28°F) in Arden Hills typically lands around Apr 14, 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 5.
When is the first frost in Arden Hills?
The first hard freeze (28°F) in Arden Hills typically arrives around Oct 25, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 11, so the watching starts about Sep 25 — about 194 days after the spring freeze cleared.
How long is the growing season in Arden Hills?
Measured between 28°F hard freezes, Arden Hills sees about 194 frost-free days — roughly Apr 14 through Oct 25, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 5 to Oct 11, about 159 days.
Is the soil safe to grow vegetables in Arden Hills?
The federal record around Arden Hills runs heavier than most — 9,195 documented sites, mostly Brownfields entries (6,578), the nearest Brownfields record about 0.4 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 Arden Hills?
From about Sep 25 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 25 (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 25. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Arden Hills's scale — its 5a band and its 194-day season. Your yard writes its own version of Arden Hills'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 Arden Hills’s own scale
6 of the readings below were taken at Arden Hills's own scale — its own ~194-day season between 28°F freezes, the 5,418 acres it covers and 9,195 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Arden Hills's own USDA hardiness band, zones 5aUSDA PHZM 2023
- Arden Hills's own 28°F hard-freeze dates, about Apr 14 and Oct 25 and the ~194-day span between themNOAA 1991–2020 Climate Normals
- 9,195 documented contamination sites on the federal record near Arden Hills, the closest Brownfields record about 0.4 miles out from the town centreFederal environmental registers
- Arden Hills's boundary and the 5,418 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5a and a ~194-day seasonGrowable Ground crop-matching engine
- The ecoregion at Arden Hills'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 Arden Hills's 5,418 acres read through its county's SSURGO summaryfrom Ramsey County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Ramsey 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 Ramsey County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Arden Hills's 5,418 acreswhy one lot differs from the next →
- Which side of Arden Hills you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 5,418 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.4 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 Arden Hills-wide figureread your own land →
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