Horine, Missouri, sits in USDA hardiness zone 7a — a zone band wide enough that plant choice, not possibility, is the interesting question.
These conditions suit cabbage, hazelnut, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Horine, 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 Horine 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 Horine — soil, climate, flood, and parcel records. How we handle your address.
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Horine — the short answer
Horine, Missouri: USDA zone 7a, about 225 days between hard freezes, across 456 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 25
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~225
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 456 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 7a is Horine's average, not your lot's — a low corner or a tree line moves it. Against Horine's 225-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Horine
Each reading below is measured for Horine itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHorine runs about 225 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
MeasuredHorine sits in USDA hardiness zone 7a.
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 Horine is in
Horine sits in the Ozark Highlands — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Horine's own centroid rather than borrowed from Jefferson County.
What Grows in Horine
Every plant below cleared Horine's own zone 7a and its 225-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in Horine?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 25; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 25 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 5 — 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.
Documented around Horine
Survey cells within 31 miles of Horine checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 253 miles off. What to watch for.
What's on the federal record near Horine
Closest first, within ~10 miles of Horine. Listing isn't leaking, and distance isn't exposure.
- T41N R05E 23BDC1Nitrate · 1900 ft
- DONALD JAMESUnderground Storage Tanks · 2100 ft
- THOMAS INDUSTRIAL COATINGS INCBrownfields · 0.6 mi
- Unknown - LeadMining · 0.9 mi
- SHRI NARAYAN LLCUnderground Storage Tanks · 1.1 mi
- T41N R05E 24AAB1Nitrate · 1.4 mi
- HERCULANEUM PWSPFAS · 1.4 mi
- JEFFERSON COUNTY PWSD 7PFAS · 1.4 mi
- JEFFERSON COUNTY CONS PWSD C 1PFAS · 1.4 mi
- REDLINE WELDINGBrownfields · 1.5 mi
- MASTERS BROS SAND COUnderground Storage Tanks · 1.6 mi
- AMERICAN NATIONAL CANToxics Release Inventory · 1.7 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Horine'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 Horine.
Total Sites
418
within ~10 miles of Horine
Risk Level
High
Highest-severity
5 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Horine
Severity Distribution
within ~10 miles of Horine
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Horine, two things run higher than the national average within ~10 miles of Horine — PFAS (8 sites) and Nitrate (132 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Horine
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 Horine average
Your land is one point inside Horine
Everything above resolves to Horine as a whole — one PHZM band and one 28°F frost record, read across 456 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 Horine Average
Horine Average
- ●USDA Zones 7a, averaged across Horine
- ●One soil character for all of Horine
- ●Frost dates read at Horine's scale: Mar 25 to Nov 5
YOUR Parcel
- ✓Your exact zone, not Horine's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Horine
Pull a site-specific report for your exact address in Horine, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Horine averages can't show:
We read public map data around Horine — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Horine average
How we know this about Horine
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 Horine’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 Horine
When does frost risk typically end in Horine?
The last hard freeze (28°F) in Horine typically lands around Mar 25, 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 15.
When is the first frost in Horine?
The first hard freeze (28°F) in Horine typically arrives around Nov 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 22, so the watching starts about Oct 6 — about 225 days after the spring freeze cleared.
How long is the growing season in Horine?
Measured between 28°F hard freezes, Horine sees about 225 frost-free days — roughly Mar 25 through Nov 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 15 to Oct 22, about 190 days.
Is the soil safe to grow vegetables in Horine?
The federal record around Horine runs heavier than most — 418 documented sites, mostly Underground Storage Tanks entries (170), the nearest Nitrate 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 Horine?
From about Oct 6 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Horine's scale — its 7a band and its 225-day season. Your yard writes its own version of Horine'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 Horine’s own scale
7 of the readings below were taken at Horine's own scale — its own ~225-day season between 28°F freezes, the 456 acres it covers and 418 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Horine's own USDA hardiness band, zones 7aUSDA PHZM 2023
- Horine's own 28°F hard-freeze dates, about Mar 25 and Nov 5 and the ~225-day span between themNOAA 1991–2020 Climate Normals
- 418 documented contamination sites on the federal record near Horine, the closest Nitrate record about 0.4 miles out from the town centreFederal environmental registers
- Horine's boundary and the 456 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~225-day seasonGrowable Ground crop-matching engine
- The ecoregion at Horine's own centroid, the Ozark HighlandsUS EPA Level III Ecoregions
- Lanternfly survey cells around Horine checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Horine's 456 acres read through its county's SSURGO summaryfrom Jefferson County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Jefferson County
- The growing challenges every Missouri grower plans around — written at state scale, so they stay on the state guidefrom Missouri
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Jefferson County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Horine's 456 acreswhy one lot differs from the next →
- Which side of Horine you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 456 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate 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 Horine-wide figureread your own land →
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