New Hamburg, Missouri, sits in USDA hardiness zone 7a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Well-matched crops include cabbage, hazelnut, california poppy, and collard greens, and the gap between "grows in the area" and "grows in your yard" is closed by soil, sun, and drainage.
Even in New Hamburg, 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 New Hamburg 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 New Hamburg — soil, climate, flood, and parcel records. How we handle your address.
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New Hamburg — the short answer
New Hamburg, Missouri: USDA zone 7a, about 242 days between hard freezes, across 568 acres of town.
- USDA zone
- 7a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 17
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 14
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~242
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 568 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 New Hamburg's average, not your lot's — a low corner or a tree line moves it. Against New Hamburg's 242-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in New Hamburg
Each reading below is measured for New Hamburg itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredNew Hamburg runs about 242 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
MeasuredNew Hamburg 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 New Hamburg is in
New Hamburg sits in the Interior River Valleys and Hills — EPA Level III, inside the wider Eastern Temperate Forests. That is read at New Hamburg's own centroid, and it is not what its county reads: Scott County is mostly Mississippi Alluvial Plain. The wider page above you is answering a different question about different ground.
What Grows in New Hamburg
Every plant below cleared New Hamburg's own zone 7a and its 242-day season. Each card opens that plant's Missouri profile. How we score.
Is it too late to plant in New Hamburg?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 17 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 14 — long-season crops need about 90 days of runway, quick greens only 30. With a season this long, “too late” mostly means “switch crops” — second sowings and a full fall garden are the norm, with garlic closing the year.
What's on the federal record near New Hamburg
Closest first, within ~10 miles of New Hamburg. Listing isn't leaking, and distance isn't exposure.
- KERNS GROCERYUnderground Storage Tanks · 2200 ft
- MARVIN URHAHN INDIVIDUALUnderground Storage Tanks · 3.0 mi
- T28N R13E 13ABANitrate · 3.1 mi
- CITY OF BENTONUnderground Storage Tanks · 3.1 mi
- BROWN SHOE COMPANYUnderground Storage Tanks · 3.1 mi
- AMERIMART #9Underground Storage Tanks · 3.2 mi
- MANAC TRAILERS USA INC ORANBrownfields · 4.0 mi
- MANAC TRAILERS USA INC ORANToxics Release Inventory · 4.0 mi
- BRINKER'S SERVICE STATIONUnderground Storage Tanks · 4.1 mi
- ORAN R 3 SCHOOL DISTRICTBrownfields · 4.2 mi
- SOUTHERN CLAY DIV OF EDWARD LOWEUnderground Storage Tanks · 4.2 mi
- LESTER GLASTETTERUnderground Storage Tanks · 4.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from New Hamburg'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 New Hamburg.
Total Sites
166
within ~10 miles of New Hamburg
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of New Hamburg
Severity Distribution
within ~10 miles of New Hamburg
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around New Hamburg, two things run higher than the national average within ~10 miles of New Hamburg — CAFO (8 sites) and Toxics Release Inventory (12 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
CAFO: CAFOs pose a different contamination profile than chemical sources.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Check your specific parcel in New Hamburg
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 New Hamburg average
Your land is one point inside New Hamburg
Everything above resolves to New Hamburg as a whole — one PHZM band and one 28°F frost record, read across 568 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 New Hamburg Average
New Hamburg Average
- ●USDA Zones 7a, averaged across New Hamburg
- ●One soil character for all of New Hamburg
- ●Frost dates read at New Hamburg's scale: Mar 17 to Nov 14
YOUR Parcel
- ✓Your exact zone, not New Hamburg's 7a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in New Hamburg
Pull a site-specific report for your exact address in New Hamburg, Missouri — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that New Hamburg averages can't show:
We read public map data around New Hamburg — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the New Hamburg average
How we know this about New Hamburg
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 New Hamburg’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 New Hamburg
When does frost risk typically end in New Hamburg?
The last hard freeze (28°F) in New Hamburg typically lands around Mar 17, 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 7.
When is the first frost in New Hamburg?
The first hard freeze (28°F) in New Hamburg typically arrives around Nov 14, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 31, so the watching starts about Oct 15 — about 242 days after the spring freeze cleared.
How long is the growing season in New Hamburg?
Measured between 28°F hard freezes, New Hamburg sees about 242 frost-free days — roughly Mar 17 through Nov 14, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 7 to Oct 31, about 207 days.
Is the soil safe to grow vegetables in New Hamburg?
The federal record around New Hamburg is a meaningful one — 166 documented sites, mostly Underground Storage Tanks entries (70), the nearest Underground Storage Tanks record about 0.4 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 New Hamburg?
From about Oct 15 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 14 (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 14. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at New Hamburg's scale — its 7a band and its 242-day season. Your yard writes its own version of New Hamburg'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 New Hamburg’s own scale
6 of the readings below were taken at New Hamburg's own scale — its own ~242-day season between 28°F freezes, the 568 acres it covers and 166 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- New Hamburg's own USDA hardiness band, zones 7aUSDA PHZM 2023
- New Hamburg's own 28°F hard-freeze dates, about Mar 17 and Nov 14 and the ~242-day span between themNOAA 1991–2020 Climate Normals
- 166 documented contamination sites on the federal record near New Hamburg, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
- New Hamburg's boundary and the 568 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7a and a ~242-day seasonGrowable Ground crop-matching engine
- New Hamburg sits in the Interior River Valleys and Hills — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so New Hamburg's 568 acres read through its county's SSURGO summaryfrom Scott County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Scott 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 Scott County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among New Hamburg's 568 acreswhy one lot differs from the next →
- Which side of New Hamburg you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 568 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks 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 New Hamburg-wide figureread your own land →