High Hill, Missouri, sits in USDA hardiness zone 6b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
The conditions favor cabbage, hazelnut, lavender, and collard greens, among others — though every individual site edits that list with its own soil, sun, and drainage.
Even in High Hill, 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 High Hill lot. Enter your address and we'll score 1,085 plants against your land's actual soil, sun, and frost.
We read public map data around High Hill — soil, climate, flood, and parcel records. How we handle your address.
No card required · your parcel report in seconds — read in full free for your first 14 days
High Hill — the short answer
High Hill, Missouri: USDA zone 6b, about 224 days between hard freezes, across 294 acres of city.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 29
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~224
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 294 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 6b is High Hill's average, not your lot's — a low corner or a tree line moves it. Against High Hill's 224-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in High Hill
Each reading below is measured for High Hill itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHigh Hill runs about 224 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
MeasuredHigh Hill sits in USDA hardiness zone 6b.
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 High Hill is in
High Hill sits in the Central Irregular Plains — EPA Level III, inside the wider Great Plains. That is read at High Hill's own centroid, and it is not what its county reads: Montgomery County is mostly Interior River Valleys and Hills. The wider page above you is answering a different question about different ground.
What Grows in High Hill
Every plant below cleared High Hill's own zone 6b and its 224-day season. Each card opens that plant's Missouri profile. How we score.
More to grow in Missouri
Missouri has a growing page for many more plants than fit above — a rotating sample of the rest of the shelf.
Is it too late to plant in High Hill?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Mar 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 29 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 8 — 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 High Hill
Survey cells within 31 miles of High Hill checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 262 miles off. What to watch for.
What's on the federal record near High Hill
Closest first, within ~10 miles of High Hill. Listing isn't leaking, and distance isn't exposure.
- HIGH HILL-C.O.Underground Storage Tanks · 900 ft
- T48N R04W 32DDB1Nitrate · 1300 ft
- PAUL L. JAMESUnderground Storage Tanks · 1800 ft
- BREAK TIME CONVENIENCE STORE #3039Underground Storage Tanks · 1900 ft
- CHRISTY MINERALS TERRILL CLAY PITToxics Release Inventory · 2300 ft
- CHRISTY MINERALSUnderground Storage Tanks · 0.5 mi
- OGY (NICKERSON FARMS)Underground Storage Tanks · 0.6 mi
- T48N R05W 26DCA1Nitrate · 3.3 mi
- UNIQUE AUTOMOTIVE REBUILDERSToxics Release Inventory · 3.3 mi
- NEW FLORENCE M-59Underground Storage Tanks · 3.6 mi
- NEW FLORENCE MAINT BLDGUnderground Storage Tanks · 4.1 mi
- New FlorenceNitrate · 4.2 mi
6 more sites are on the record inside the same radius.
Measured from High Hill's center, not your beds. Run your own address for what's upwind of you specifically.
Browse the full contamination data for this area
Environmental Intelligence
The counts behind that headline — every source type on the record near High Hill.
Total Sites
70
within ~10 miles of High Hill
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of High Hill
Severity Distribution
within ~10 miles of High Hill
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around High Hill, Toxics Release Inventory runs higher than the national average — 6 sites within ~10 miles of High Hill. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in High Hill
Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,085 plant recommendations.
25+ data sources read at your address, not the High Hill average
Your land is one point inside High Hill
Everything above resolves to High Hill as a whole — one PHZM band and one 28°F frost record, read across 294 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 High Hill Average
High Hill Average
- ●USDA Zones 6b, averaged across High Hill
- ●One soil character for all of High Hill
- ●Frost dates read at High Hill's scale: Mar 29 to Nov 8
YOUR Parcel
- ✓Your exact zone, not High Hill's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in High Hill
Pull a site-specific report for your exact address in High Hill, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that High Hill averages can't show:
We read public map data around High Hill — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the High Hill average
How we know this about High Hill
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 High Hill’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 High Hill
When does frost risk typically end in High Hill?
The last hard freeze (28°F) in High Hill typically lands around Mar 29, 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 19.
When is the first frost in High Hill?
The first hard freeze (28°F) in High Hill typically arrives around Nov 8, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 25, so the watching starts about Oct 9 — about 224 days after the spring freeze cleared.
How long is the growing season in High Hill?
Measured between 28°F hard freezes, High Hill sees about 224 frost-free days — roughly Mar 29 through Nov 8, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 19 to Oct 25, about 189 days.
Is the soil safe to grow vegetables in High Hill?
The federal record around High Hill is a meaningful one — 70 documented sites, mostly Underground Storage Tanks entries (35), 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 High Hill?
From about Oct 9 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 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 Nov 8. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at High Hill's scale — its 6b band and its 224-day season. Your yard writes its own version of High Hill'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 High Hill’s own scale
7 of the readings below were taken at High Hill's own scale — its own ~224-day season between 28°F freezes, the 294 acres it covers and 70 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- High Hill's own USDA hardiness band, zones 6bUSDA PHZM 2023
- High Hill's own 28°F hard-freeze dates, about Mar 29 and Nov 8 and the ~224-day span between themNOAA 1991–2020 Climate Normals
- 70 documented contamination sites on the federal record near High Hill, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- High Hill's boundary and the 294 acres inside itUS Census TIGER/Line 2025
- Which of 1,085 plants clear zones 6b and a ~224-day seasonGrowable Ground crop-matching engine
- High Hill sits in the Central Irregular Plains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
- Lanternfly survey cells around High Hill 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 High Hill's 294 acres read through its county's SSURGO summaryfrom Montgomery County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Montgomery 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 Montgomery County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among High Hill's 294 acreswhy one lot differs from the next →
- Which side of High Hill you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 294 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 High Hill-wide figureread your own land →
More in Missouri
Wider growing context
What grows across MissouriHigh Hill sits outside our named growing regions, so Missouri as a whole is its closest context here.
Nearby growing guides