Helmsburg, Indiana, sits in USDA hardiness zone 6b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
These conditions suit cabbage, hazelnut, lavender, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Helmsburg, 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 Helmsburg 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 Helmsburg — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Helmsburg — the short answer
Helmsburg, Indiana: USDA zone 6b, about 219 days between hard freezes, across 810 acres of town.
- USDA zone
- 6b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 1
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 6
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~219
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 810 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 Helmsburg's average, not your lot's — a low corner or a tree line moves it. Against Helmsburg's 219-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Helmsburg
Each reading below is measured for Helmsburg itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredHelmsburg runs about 219 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
MeasuredHelmsburg 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 Helmsburg is in
Helmsburg sits in the Interior Plateau — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Helmsburg's own centroid rather than borrowed from Brown County.
What Grows in Helmsburg
Every plant below cleared Helmsburg's own zone 6b and its 219-day season. Each card opens that plant's Indiana profile. How we score.
Is it too late to plant in Helmsburg?
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 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 6 — 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 Helmsburg
Survey cells within 31 miles of Helmsburg checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 79 miles off. What to watch for.
What's on the federal record near Helmsburg
Closest first, within ~10 miles of Helmsburg. Listing isn't leaking, and distance isn't exposure.
- Rosebrock IncorporatedUnderground Storage Tanks · 1200 ft
- GARDNER TRANSPORT SVCS INCBrownfields · 1.5 mi
- BEAN BLOSSOM WINTER UNITUnderground Storage Tanks · 2.5 mi
- VIC & JBS GAS & CONVENIENCE STORE INCORPORATEDUnderground Storage Tanks · 2.5 mi
- COVERED BRIDGE INNUnderground Storage Tanks · 2.5 mi
- J & W SERVICEUnderground Storage Tanks · 3.3 mi
- WAYCROSS CAMPUnderground Storage Tanks · 3.7 mi
- FRUITDALE MARKET INCORPORATEDUnderground Storage Tanks · 4.0 mi
- ALS PAINT & BODY INCBrownfields · 4.1 mi
- NORTH SHORE MARINAUnderground Storage Tanks · 4.7 mi
- TIM SMARTUnderground Storage Tanks · 4.8 mi
- GRANNY SUESUnderground Storage Tanks · 4.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Helmsburg'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 Helmsburg.
Total Sites
59
within ~10 miles of Helmsburg
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Helmsburg
Severity Distribution
within ~10 miles of Helmsburg
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Helmsburg, two things run higher than the national average within ~10 miles of Helmsburg — PFAS (9 sites) and Underground Storage Tanks (39 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.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Helmsburg
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 Helmsburg average
Your land is one point inside Helmsburg
Everything above resolves to Helmsburg as a whole — one PHZM band and one 28°F frost record, read across 810 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 Helmsburg Average
Helmsburg Average
- ●USDA Zones 6b, averaged across Helmsburg
- ●One soil character for all of Helmsburg
- ●Frost dates read at Helmsburg's scale: Apr 1 to Nov 6
YOUR Parcel
- ✓Your exact zone, not Helmsburg's 6b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Helmsburg
Pull a site-specific report for your exact address in Helmsburg, Indiana — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Helmsburg averages can't show:
We read public map data around Helmsburg — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Helmsburg average
How we know this about Helmsburg
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 Helmsburg’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 Helmsburg
When does frost risk typically end in Helmsburg?
The last hard freeze (28°F) in Helmsburg typically lands around Apr 1, 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 22.
When is the first frost in Helmsburg?
The first hard freeze (28°F) in Helmsburg typically arrives around Nov 6, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 23, so the watching starts about Oct 7 — about 219 days after the spring freeze cleared.
How long is the growing season in Helmsburg?
Measured between 28°F hard freezes, Helmsburg sees about 219 frost-free days — roughly Apr 1 through Nov 6, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 22 to Oct 23, about 184 days.
Is the soil safe to grow vegetables in Helmsburg?
The federal record around Helmsburg is a meaningful one — 59 documented sites, mostly Underground Storage Tanks entries (39), 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 Helmsburg?
From about Oct 7 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 6 (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 6. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Helmsburg's scale — its 6b band and its 219-day season. Your yard writes its own version of Helmsburg'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 Helmsburg’s own scale
7 of the readings below were taken at Helmsburg's own scale — its own ~219-day season between 28°F freezes, the 810 acres it covers and 59 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Helmsburg's own USDA hardiness band, zones 6bUSDA PHZM 2023
- Helmsburg's own 28°F hard-freeze dates, about Apr 1 and Nov 6 and the ~219-day span between themNOAA 1991–2020 Climate Normals
- 59 documented contamination sites on the federal record near Helmsburg, the closest Underground Storage Tanks record about 0.2 miles out from the town centreFederal environmental registers
- Helmsburg's boundary and the 810 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 6b and a ~219-day seasonGrowable Ground crop-matching engine
- The ecoregion at Helmsburg's own centroid, the Interior PlateauUS EPA Level III Ecoregions
- Lanternfly survey cells around Helmsburg 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 Helmsburg's 810 acres read through its county's SSURGO summaryfrom Brown County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Brown County
- The growing challenges every Indiana grower plans around — written at state scale, so they stay on the state guidefrom Indiana
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Brown County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Helmsburg's 810 acreswhy one lot differs from the next →
- Which side of Helmsburg you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 810 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 Helmsburg-wide figureread your own land →