Harpersville, Alabama, sits in USDA hardiness zone 8a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Among the crops suited to this profile: cabbage, fig, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Harpersville, 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 Harpersville 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 Harpersville — soil, climate, flood, and parcel records. How we handle your address.
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Harpersville — the short answer
Harpersville, Alabama: USDA zone 8a, about 281 days between hard freezes, across 14K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 23
- Shelby County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 1
- Shelby County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~281
- Shelby County normal — NOAA 1991–2020, nearest to this town
- Town area
- 14K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. No 30-year normal resolves at this town’s own centroid, so the hard-freeze dates are Shelby County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8a is Harpersville's average, not your lot's — a low corner or a tree line moves it. Against Harpersville's 281-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Harpersville
Each reading below is measured for Harpersville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsHarpersville runs about 281 days between hard freezes (read from Shelby County, the closest normal to Harpersville) — close to year-round growing.
Frost is rarely the limit here; winter plantings are as real as summer ones, and the harder question is which crops shrug off the summer heat.
Grow cool-season crops through the mild winter, and choose heat-tolerant varieties for the summer beds.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredHarpersville sits in USDA hardiness zone 8a.
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 Harpersville is in
Harpersville sits in the Ridge and Valley — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Harpersville's own centroid rather than borrowed from Shelby County.
What Grows in Harpersville
Every plant below cleared Harpersville's own zone 8a and its 281-day season. Each card opens that plant's Alabama profile. How we score.
Is it too late to plant in Harpersville?
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 Jan 26; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 23 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 1 — long-season crops need about 90 days of runway, quick greens only 30. And with a calendar this mild, the honest answer is that planting barely stops — winter opens seasons colder regions never see.
What's on the federal record near Harpersville
Closest first, within ~10 miles of Harpersville. Listing isn't leaking, and distance isn't exposure.
- SHERMAN INDUSTRIES LLC - HARPERSVILLE PLANTToxics Release Inventory · 0.5 mi
- MORRIS-SHEA BRIDGE COMPANY, INC.Brownfields · 0.7 mi
- LARRY KELLYUnderground Storage Tanks · 1.2 mi
- HARPERSVILLE TEXACOUnderground Storage Tanks · 1.2 mi
- CARL WOODUnderground Storage Tanks · 1.2 mi
- WYATT FARMSCAFO · 1.3 mi
- COOSA MARTUnderground Storage Tanks · 1.6 mi
- AL0009Underground Storage Tanks · 1.7 mi
- SHOP N FILL # 17Underground Storage Tanks · 1.8 mi
- ALLEN FOOD MART #53Underground Storage Tanks · 1.9 mi
- GILLS SERVICE CENTERBrownfields · 1.9 mi
- PAT'S PLACEUnderground Storage Tanks · 2.0 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Harpersville'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 Harpersville.
Sources Checked
within ~10 miles of Harpersville
Severity Distribution
within ~10 miles of Harpersville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Harpersville, two things run higher than the national average within ~10 miles of Harpersville — Superfund (7 sites) and PFAS (3 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Superfund: Superfund sites represent the most severe contamination in the federal system.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Commission professional soil testing before any food production (test for heavy metals, VOCs, and SVOCs).
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Harpersville
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 Harpersville average
Your land is one point inside Harpersville
Everything above resolves to Harpersville as a whole — one PHZM band, read across 14K acres, with hard-freeze dates borrowed from Shelby County’s record because no 30-year normal resolves at this town’s own centroid. 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 Harpersville Average
Harpersville Average
- ●USDA Zones 8a, averaged across Harpersville
- ●One soil character for all of Harpersville
- ●Frost dates read at Harpersville's scale: Feb 23 to Dec 1
YOUR Parcel
- ✓Your exact zone, not Harpersville's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Harpersville
Pull a site-specific report for your exact address in Harpersville, Alabama — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Harpersville averages can't show:
We read public map data around Harpersville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Harpersville average
How we know this about Harpersville
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 Shelby County’s record, because none resolves here; 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 Harpersville
When does frost risk typically end in Harpersville?
The last hard freeze (28°F) in Harpersville typically lands around Feb 23, 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 Mar 16.
When is the first frost in Harpersville?
The first hard freeze (28°F) in Harpersville typically arrives around Dec 1, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 17, so the watching starts about Nov 1 — about 281 days after the spring freeze cleared.
How long is the growing season in Harpersville?
Measured between 28°F hard freezes, Harpersville sees about 281 frost-free days — roughly Feb 23 through Dec 1, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 16 to Nov 17, about 246 days.
Is the soil safe to grow vegetables in Harpersville?
The federal record around Harpersville is a meaningful one — 128 documented sites, mostly Underground Storage Tanks entries (79), the nearest Toxics Release Inventory record about 0.5 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 Harpersville?
From about Nov 1 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 Dec 1 (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 Dec 1. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Harpersville's scale — its 8a band and its 281-day season. Your yard writes its own version of Harpersville'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 Harpersville’s own scale
5 of the readings below were taken at Harpersville's own scale — the 14,073 acres it covers and 128 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Harpersville's own USDA hardiness band, zones 8aUSDA PHZM 2023
- 128 documented contamination sites on the federal record near Harpersville, the closest Toxics Release Inventory record about 0.5 miles out from the town centreFederal environmental registers
- Harpersville's boundary and the 14,073 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~281-day seasonGrowable Ground crop-matching engine
- The ecoregion at Harpersville's own centroid, the Ridge and ValleyUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Harpersville has no normal of its own, so its county's is the closest measured readfrom Shelby County
- Soil character — no town-scale survey exists, so Harpersville's 14,073 acres read through its county's SSURGO summaryfrom Shelby County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Shelby County
- The growing challenges every Alabama grower plans around — written at state scale, so they stay on the state guidefrom Alabama
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Shelby County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Harpersville's 14,073 acreswhy one lot differs from the next →
- Which side of Harpersville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 14,073 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Toxics Release Inventory record about 0.5 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 Harpersville-wide figureread your own land →
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