Anchor, Illinois, sits in USDA hardiness zone 6a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, cabbage, hazelnut, lavender, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Anchor, 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 Anchor 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 Anchor — soil, climate, flood, and parcel records. How we handle your address.
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Anchor — the short answer
Anchor, Illinois: USDA zone 6a, about 205 days between hard freezes, across 109 acres of town.
- USDA zone
- 6a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 30
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~205
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 109 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 Anchor's average, not your lot's — a low corner or a tree line moves it. Against Anchor's 205-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Anchor
Each reading below is measured for Anchor itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredAnchor runs about 205 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
MeasuredAnchor 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 Anchor is in
Anchor sits in the Central Corn Belt Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Anchor's own centroid rather than borrowed from McLean County.
What Grows in Anchor
Every plant below cleared Anchor's own zone 6a and its 205-day season. Each card opens that plant's Illinois profile. How we score.
Is it too late to plant in Anchor?
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 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 30 — long-season crops need about 90 days of runway, quick greens only 30. There is slack in a calendar like this — late plantings, second rounds of favorites, and a fall bench that keeps beds working.
What's on the federal record near Anchor
Closest first, within ~10 miles of Anchor. Listing isn't leaking, and distance isn't exposure.
- Anchor FS Fertilizer PlantUnderground Storage Tanks · 0.5 mi
- Meier OilUnderground Storage Tanks · 3.8 mi
- E & H SerUnderground Storage Tanks · 3.9 mi
- Ron Onken Chevrolet (Closed)Underground Storage Tanks · 3.9 mi
- Casey's General Store #1420Underground Storage Tanks · 4.0 mi
- Viamino Feeds IncUnderground Storage Tanks · 4.0 mi
- Octavia Unit Dist #8Underground Storage Tanks · 4.0 mi
- Naff David A DdsUnderground Storage Tanks · 4.0 mi
- COLFAX MFG INCBrownfields · 4.1 mi
- Towner Standard StationUnderground Storage Tanks · 4.1 mi
- Wyant ServiceUnderground Storage Tanks · 4.1 mi
- Anchor Grain CoUnderground Storage Tanks · 4.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Anchor'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 Anchor.
Total Sites
59
within ~10 miles of Anchor
Risk Level
Moderate
Highest-severity
11 concentrated animal feeding operations
Sources Checked
within ~10 miles of Anchor
Severity Distribution
within ~10 miles of Anchor
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Anchor, two things run higher than the national average within ~10 miles of Anchor — CAFO (11 sites) and Underground Storage Tanks (37 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Anchor
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 Anchor average
Your land is one point inside Anchor
Everything above resolves to Anchor as a whole — one PHZM band and one 28°F frost record, read across 109 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 Anchor Average
Anchor Average
- ●USDA Zones 6a, averaged across Anchor
- ●One soil character for all of Anchor
- ●Frost dates read at Anchor's scale: Apr 8 to Oct 30
YOUR Parcel
- ✓Your exact zone, not Anchor's 6a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Anchor
Pull a site-specific report for your exact address in Anchor, Illinois — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Anchor averages can't show:
We read public map data around Anchor — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Anchor average
How we know this about Anchor
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 Anchor’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 Anchor
When does frost risk typically end in Anchor?
The last hard freeze (28°F) in Anchor typically lands around Apr 8, 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 29.
When is the first frost in Anchor?
The first hard freeze (28°F) in Anchor typically arrives around Oct 30, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 16, so the watching starts about Sep 30 — about 205 days after the spring freeze cleared.
How long is the growing season in Anchor?
Measured between 28°F hard freezes, Anchor sees about 205 frost-free days — roughly Apr 8 through Oct 30, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 29 to Oct 16, about 170 days.
Is the soil safe to grow vegetables in Anchor?
The federal record around Anchor shows 59 documented sites, mostly Underground Storage Tanks entries (37), the nearest Underground Storage Tanks record about 0.5 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 Anchor?
From about Sep 30 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 30 (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 30. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Anchor's scale — its 6a band and its 205-day season. Your yard writes its own version of Anchor'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 Anchor’s own scale
6 of the readings below were taken at Anchor's own scale — its own ~205-day season between 28°F freezes, the 109 acres it covers and 59 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Anchor's own USDA hardiness band, zones 6aUSDA PHZM 2023
- Anchor's own 28°F hard-freeze dates, about Apr 8 and Oct 30 and the ~205-day span between themNOAA 1991–2020 Climate Normals
- 59 documented contamination sites on the federal record near Anchor, the closest Underground Storage Tanks record about 0.5 miles out from the town centreFederal environmental registers
- Anchor's boundary and the 109 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6a and a ~205-day seasonGrowable Ground crop-matching engine
- The ecoregion at Anchor's own centroid, the Central Corn Belt PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Anchor's 109 acres read through its county's SSURGO summaryfrom McLean County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom McLean County
- The growing challenges every Illinois grower plans around — written at state scale, so they stay on the state guidefrom Illinois
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom McLean County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Anchor's 109 acreswhy one lot differs from the next →
- Which side of Anchor you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 109 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.5 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 Anchor-wide figureread your own land →
More in Illinois
Wider growing context
What grows across IllinoisAnchor sits outside our named growing regions, so Illinois as a whole is its closest context here.
Nearby growing guides