Dillsboro, North Carolina, sits in USDA hardiness zone 7b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Expect cabbage, prickly pear, california poppy, and collard greens to be strong candidates here; the deciding factors on any one parcel stay local — soil, sun, and drainage.
Even in Dillsboro, 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 Dillsboro 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 Dillsboro — soil, climate, flood, and parcel records. How we handle your address.
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Dillsboro — the short answer
Dillsboro, North Carolina: USDA zone 7b, about 205 days between hard freezes, across 306 acres of town.
- USDA zone
- 7b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Apr 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Oct 27
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~205
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 306 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 7b is Dillsboro's average, not your lot's — a low corner or a tree line moves it. Against Dillsboro's 205-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Dillsboro
Each reading below is measured for Dillsboro itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredDillsboro 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
MeasuredDillsboro sits in USDA hardiness zone 7b.
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 Dillsboro is in
Dillsboro sits in the Blue Ridge — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Dillsboro's own centroid rather than borrowed from Jackson County.
What Grows in Dillsboro
Every plant below cleared Dillsboro's own zone 7b and its 205-day season. Each card opens that plant's North Carolina profile. How we score.
Is it too late to plant in Dillsboro?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Mar 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Apr 5 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Oct 27 — long-season crops need about 90 days of runway, quick greens only 30. Here the season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
Documented around Dillsboro
Spotted lanternfly documented 20 miles from Dillsboro, first recorded 2023. What to watch for.
What's on the federal record near Dillsboro
Closest first, within ~10 miles of Dillsboro. Listing isn't leaking, and distance isn't exposure.
- DILLSBORO STATIONUnderground Storage Tanks · 400 ft
- MARSHALL'S EXXONUnderground Storage Tanks · 600 ft
- SMOKY MOUNTAIN CTR FOR MH/DD/SASUnderground Storage Tanks · 750 ft
- CONVENIENCE KING, INC.Underground Storage Tanks · 900 ft
- SUPER TEST STATION #0612Underground Storage Tanks · 1100 ft
- NANTAHALA ABANDONED PCB TRANSFORMER SITESuperfund · 2300 ft
- HOLIDAY BPUnderground Storage Tanks · 0.7 mi
- SOUTHERN CONCRETE MATERIALS - SYLVA PLANTToxics Release Inventory · 0.9 mi
- SYLVA PLANTUnderground Storage Tanks · 0.9 mi
- SOUTHERN CONCRETE MATERIALSUnderground Storage Tanks · 0.9 mi
- BUSTER BROWN APPAREL-SYLVA PLANTUnderground Storage Tanks · 0.9 mi
- MAXWELL BACKERYUnderground Storage Tanks · 1.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Dillsboro'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 Dillsboro.
Total Sites
205
within ~10 miles of Dillsboro
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Dillsboro
Severity Distribution
within ~10 miles of Dillsboro
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Dillsboro, two things run higher than the national average within ~10 miles of Dillsboro — Mining (37 sites) and Underground Storage Tanks (144 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Dillsboro
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 Dillsboro average
Your land is one point inside Dillsboro
Everything above resolves to Dillsboro as a whole — one PHZM band and one 28°F frost record, read across 306 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 Dillsboro Average
Dillsboro Average
- ●USDA Zones 7b, averaged across Dillsboro
- ●One soil character for all of Dillsboro
- ●Frost dates read at Dillsboro's scale: Apr 5 to Oct 27
YOUR Parcel
- ✓Your exact zone, not Dillsboro's 7b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Dillsboro
Pull a site-specific report for your exact address in Dillsboro, North Carolina — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Dillsboro averages can't show:
We read public map data around Dillsboro — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Dillsboro average
How we know this about Dillsboro
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 Dillsboro’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 Dillsboro
When does frost risk typically end in Dillsboro?
The last hard freeze (28°F) in Dillsboro typically lands around Apr 5, 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 26.
When is the first frost in Dillsboro?
The first hard freeze (28°F) in Dillsboro typically arrives around Oct 27, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Oct 13, so the watching starts about Sep 27 — about 205 days after the spring freeze cleared.
How long is the growing season in Dillsboro?
Measured between 28°F hard freezes, Dillsboro sees about 205 frost-free days — roughly Apr 5 through Oct 27, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 26 to Oct 13, about 170 days.
Is the soil safe to grow vegetables in Dillsboro?
The federal record around Dillsboro is a meaningful one — 205 documented sites, mostly Underground Storage Tanks entries (144), the nearest Underground Storage Tanks record under a tenth of a mile 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 Dillsboro?
From about Sep 27 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 27 (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 27. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Dillsboro's scale — its 7b band and its 205-day season. Your yard writes its own version of Dillsboro'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 Dillsboro’s own scale
7 of the readings below were taken at Dillsboro's own scale — its own ~205-day season between 28°F freezes, the 306 acres it covers and 205 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Dillsboro's own USDA hardiness band, zones 7bUSDA PHZM 2023
- Dillsboro's own 28°F hard-freeze dates, about Apr 5 and Oct 27 and the ~205-day span between themNOAA 1991–2020 Climate Normals
- 205 documented contamination sites on the federal record near Dillsboro, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Dillsboro's boundary and the 306 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 7b and a ~205-day seasonGrowable Ground crop-matching engine
- The ecoregion at Dillsboro's own centroid, the Blue RidgeUS EPA Level III Ecoregions
- A documented spotted-lanternfly record within reach of Dillsborolydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- Soil character — no town-scale survey exists, so Dillsboro's 306 acres read through its county's SSURGO summaryfrom Jackson County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Jackson County
- The growing challenges every North Carolina grower plans around — written at state scale, so they stay on the state guidefrom North Carolina
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Jackson County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Dillsboro's 306 acreswhy one lot differs from the next →
- Which side of Dillsboro you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 306 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Dillsboro-wide figureread your own land →