Egg Harbor, Wisconsin, sits in USDA hardiness zone 5b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
On paper, cabbage, cranberry, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Egg Harbor, 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 Egg Harbor 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 Egg Harbor — soil, climate, flood, and parcel records. How we handle your address.
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Egg Harbor — the short answer
Egg Harbor, Wisconsin: USDA zone 5b, about 195 days between hard freezes, across 2K acres of town.
- USDA zone
- 5b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 22
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 3
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~195
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 2K 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 5b is Egg Harbor's average, not your lot's — a low corner or a tree line moves it. Against Egg Harbor's 195-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Egg Harbor
Each reading below is measured for Egg Harbor itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredEgg Harbor runs about 195 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
MeasuredEgg Harbor sits in USDA hardiness zone 5b.
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 Egg Harbor is in
Egg Harbor sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Egg Harbor's own centroid rather than borrowed from Door County.
What Grows in Egg Harbor
Every plant below cleared Egg Harbor's own zone 5b and its 195-day season. Each card opens that plant's Wisconsin profile. How we score.
Is it too late to plant in Egg Harbor?
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 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 22 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 3 — long-season crops need about 90 days of runway, quick greens only 30. Late in the year the fall bench takes over — quick greens, radishes, and garlic that repays you next summer.
What's on the federal record near Egg Harbor
Closest first, within ~10 miles of Egg Harbor. Listing isn't leaking, and distance isn't exposure.
- Alpine Inn & CottagesUnderground Storage Tanks · 0.9 mi
- LEONARD E BROOKSUnderground Storage Tanks · 1.0 mi
- Egg Harbor Village DockUnderground Storage Tanks · 1.1 mi
- Mariner MotelUnderground Storage Tanks · 1.1 mi
- REFLECTIONS INCUnderground Storage Tanks · 1.2 mi
- MUELLER BROTHERS STANDARD SERVICEBrownfields · 1.2 mi
- Muellers Mini Mart LLCUnderground Storage Tanks · 1.2 mi
- Lenas Sip & ChatUnderground Storage Tanks · 1.3 mi
- Harbor HardwareUnderground Storage Tanks · 1.4 mi
- Pj's Of Door CountyUnderground Storage Tanks · 1.5 mi
- ROD SCHLISE P&HUnderground Storage Tanks · 1.5 mi
- DOOR COUNTY CO OPUnderground Storage Tanks · 2.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Egg Harbor'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 Egg Harbor.
Total Sites
83
within ~10 miles of Egg Harbor
Risk Level
Moderate
Highest-severity
1 concentrated animal feeding operation
Sources Checked
within ~10 miles of Egg Harbor
Severity Distribution
within ~10 miles of Egg Harbor
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Egg Harbor, Underground Storage Tanks runs higher than the national average — 61 sites within ~10 miles of Egg Harbor. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Egg Harbor
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 Egg Harbor average
Your land is one point inside Egg Harbor
Everything above resolves to Egg Harbor as a whole — one PHZM band and one 28°F frost record, read across 2K 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 Egg Harbor Average
Egg Harbor Average
- ●USDA Zones 5b, averaged across Egg Harbor
- ●One soil character for all of Egg Harbor
- ●Frost dates read at Egg Harbor's scale: Apr 22 to Nov 3
YOUR Parcel
- ✓Your exact zone, not Egg Harbor's 5b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Egg Harbor
Pull a site-specific report for your exact address in Egg Harbor, Wisconsin — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Egg Harbor averages can't show:
We read public map data around Egg Harbor — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Egg Harbor average
How we know this about Egg Harbor
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 Egg Harbor’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 Egg Harbor
When does frost risk typically end in Egg Harbor?
The last hard freeze (28°F) in Egg Harbor typically lands around Apr 22, 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 13.
When is the first frost in Egg Harbor?
The first hard freeze (28°F) in Egg Harbor typically arrives around Nov 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 20, so the watching starts about Oct 4 — about 195 days after the spring freeze cleared.
How long is the growing season in Egg Harbor?
Measured between 28°F hard freezes, Egg Harbor sees about 195 frost-free days — roughly Apr 22 through Nov 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 13 to Oct 20, about 160 days.
Is the soil safe to grow vegetables in Egg Harbor?
The federal record around Egg Harbor shows 83 documented sites, mostly Underground Storage Tanks entries (61), the nearest Underground Storage Tanks record about 0.9 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 Egg Harbor?
From about Oct 4 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 3 (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 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Egg Harbor's scale — its 5b band and its 195-day season. Your yard writes its own version of Egg Harbor'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 Egg Harbor’s own scale
6 of the readings below were taken at Egg Harbor's own scale — its own ~195-day season between 28°F freezes, the 1,579 acres it covers and 83 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Egg Harbor's own USDA hardiness band, zones 5bUSDA PHZM 2023
- Egg Harbor's own 28°F hard-freeze dates, about Apr 22 and Nov 3 and the ~195-day span between themNOAA 1991–2020 Climate Normals
- 83 documented contamination sites on the federal record near Egg Harbor, the closest Underground Storage Tanks record about 0.9 miles out from the town centreFederal environmental registers
- Egg Harbor's boundary and the 1,579 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 5b and a ~195-day seasonGrowable Ground crop-matching engine
- The ecoregion at Egg Harbor'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 Egg Harbor's 1,579 acres read through its county's SSURGO summaryfrom Door County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Door County
- The growing challenges every Wisconsin grower plans around — written at state scale, so they stay on the state guidefrom Wisconsin
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Door County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Egg Harbor's 1,579 acreswhy one lot differs from the next →
- Which side of Egg Harbor you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,579 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.9 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 Egg Harbor-wide figureread your own land →
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