Siren, Wisconsin, sits in USDA hardiness zone 4b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, cranberry, turkish rocket, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Siren, 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 Siren 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 Siren — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Siren — the short answer
Siren, Wisconsin: USDA zone 4b, about 159 days between hard freezes, across 870 acres of town.
- USDA zone
- 4b
- USDA PHZM 2023
- Last hard freeze (28°F)
- May 2
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~159
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 870 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 Siren's average, not your lot's — a low corner or a tree line moves it. Against Siren's 159-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Siren
Each reading below is measured for Siren itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredSiren runs about 159 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
MeasuredSiren 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 Siren is in
Siren sits in the North Central Hardwood Forests — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Siren's own centroid, and it is not what its county reads: Burnett County is mostly Northern Lakes and Forests. The wider page above you is answering a different question about different ground.
What Grows in Siren
Every plant below cleared Siren's own zone 4b and its 159-day season. Each card opens that plant's Wisconsin profile. How we score.
Is it too late to plant in Siren?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Apr 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near May 2 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 8 — long-season crops need about 90 days of runway, quick greens only 30. The tail of the season still works: sixty-day crops into late summer, quick greens after, garlic last of all.
What's on the federal record near Siren
Closest first, within ~10 miles of Siren. Listing isn't leaking, and distance isn't exposure.
- Siren Bus GarageUnderground Storage Tanks · 1100 ft
- T N L TRANSPORTBrownfields · 1300 ft
- VILLAGE OF SIRENUnderground Storage Tanks · 1400 ft
- SIREN VILLAGE SHOPUnderground Storage Tanks · 1600 ft
- DANIELS PLUMBING & HEATINGUnderground Storage Tanks · 1700 ft
- DON DANIELS CONST INCUnderground Storage Tanks · 1700 ft
- POLK BURNETT ELECTRIC COOPBrownfields · 2100 ft
- Good Samaritan CenterUnderground Storage Tanks · 2100 ft
- EARLYS SIREN 66Underground Storage Tanks · 2500 ft
- DONE RIGHT AUTO REPAIRBrownfields · 2500 ft
- C O RasmussenUnderground Storage Tanks · 0.5 mi
- SOUTHSIDE AUTO REPAIRUnderground Storage Tanks · 0.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Siren'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 Siren.
Sources Checked
within ~10 miles of Siren
Severity Distribution
within ~10 miles of Siren
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Siren, Mining runs higher than the national average — 16 sites within ~10 miles of Siren. That's not a problem with your land — it's information about it.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check your specific parcel in Siren
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 Siren average
Your land is one point inside Siren
Everything above resolves to Siren as a whole — one PHZM band and one 28°F frost record, read across 870 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 Siren Average
Siren Average
- ●USDA Zones 4b, averaged across Siren
- ●One soil character for all of Siren
- ●Frost dates read at Siren's scale: May 2 to Oct 8
YOUR Parcel
- ✓Your exact zone, not Siren's 4b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Siren
Pull a site-specific report for your exact address in Siren, Wisconsin — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Siren averages can't show:
We read public map data around Siren — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Siren average
How we know this about Siren
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 Siren’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 Siren
When does frost risk typically end in Siren?
The last hard freeze (28°F) in Siren typically lands around May 2, 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 23.
When is the first frost in Siren?
The first hard freeze (28°F) in Siren typically arrives around Oct 8, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Sep 24, so the watching starts about Sep 8 — about 159 days after the spring freeze cleared.
How long is the growing season in Siren?
Measured between 28°F hard freezes, Siren sees about 159 frost-free days — roughly May 2 through Oct 8, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer May 23 to Sep 24, about 124 days.
Is the soil safe to grow vegetables in Siren?
The federal record around Siren is a meaningful one — 224 documented sites, mostly Underground Storage Tanks entries (100), the nearest Underground Storage Tanks record about 0.2 miles 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 Siren?
From about Sep 8 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 8 (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 8. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Siren's scale — its 4b band and its 159-day season. Your yard writes its own version of Siren'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 Siren’s own scale
6 of the readings below were taken at Siren's own scale — its own ~159-day season between 28°F freezes, the 870 acres it covers and 224 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Siren's own USDA hardiness band, zones 4bUSDA PHZM 2023
- Siren's own 28°F hard-freeze dates, about May 2 and Oct 8 and the ~159-day span between themNOAA 1991–2020 Climate Normals
- 224 documented contamination sites on the federal record near Siren, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Siren's boundary and the 870 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 4b and a ~159-day seasonGrowable Ground crop-matching engine
- Siren sits in the North Central Hardwood Forests — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Siren's 870 acres read through its county's SSURGO summaryfrom Burnett County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Burnett 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 Burnett County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Siren's 870 acreswhy one lot differs from the next →
- Which side of Siren you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 870 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 Siren-wide figureread your own land →
More in Wisconsin
Growing region
Nearby growing guides