Rosa, 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.
These conditions suit cabbage, fig, california poppy, and collard greens — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Rosa, 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 Rosa 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 Rosa — soil, climate, flood, and parcel records. How we handle your address.
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Rosa — the short answer
Rosa, Alabama: USDA zone 8a, about 254 days between hard freezes, across 3K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~254
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 3K 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 8a is Rosa's average, not your lot's — a low corner or a tree line moves it. Against Rosa's 254-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Rosa
Each reading below is measured for Rosa itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRosa runs about 254 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
MeasuredRosa 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 Rosa is in
Rosa sits in the Southwestern Appalachians — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Rosa's own centroid rather than borrowed from Blount County.
What Grows in Rosa
Every plant below cleared Rosa's own zone 8a and its 254-day season. Each card opens that plant's Alabama profile. How we score.
Is it too late to plant in Rosa?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 12; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 12 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 21 — long-season crops need about 90 days of runway, quick greens only 30. A long window like this one runs successions deep into fall — and even its last weeks take quick greens and garlic.
What's on the federal record near Rosa
Closest first, within ~10 miles of Rosa. Listing isn't leaking, and distance isn't exposure.
- WALLS SERVICEUnderground Storage Tanks · 0.7 mi
- TERRY SLIGH AUTOMOTIVESBrownfields · 3.1 mi
- EXPRESS OIL CHANGE & TIRE ENGINEERS--ONEONTABrownfields · 3.1 mi
- O'REILLY AUTO PARTS #978Brownfields · 3.1 mi
- TRACTOR SUPPLYBrownfields · 3.1 mi
- AL0075Underground Storage Tanks · 3.2 mi
- EGG BARNUnderground Storage Tanks · 3.2 mi
- MASSEY HAULING CO., INC.Brownfields · 3.2 mi
- BROAD SALES INCUnderground Storage Tanks · 3.2 mi
- WAL-MART SUPERCENTER #315Brownfields · 3.3 mi
- THE MCPHERSON COMPANIES INC. BDA MCCLEAN FUELSBrownfields · 3.4 mi
- ALABAMA POWER ONEONTA CREW HQUnderground Storage Tanks · 3.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Rosa'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 Rosa.
Total Sites
137
within ~10 miles of Rosa
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Rosa
Severity Distribution
within ~10 miles of Rosa
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Rosa, two things run higher than the national average within ~10 miles of Rosa — CAFO (22 sites) and PFAS (3 sites). That's not a problem with your land — it's information about it.
CAFO: CAFOs pose a different contamination profile than chemical sources.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Wash all produce consumed raw thoroughly, especially leafy greens grown near CAFOs.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Rosa
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 Rosa average
Your land is one point inside Rosa
Everything above resolves to Rosa as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Rosa Average
Rosa Average
- ●USDA Zones 8a, averaged across Rosa
- ●One soil character for all of Rosa
- ●Frost dates read at Rosa's scale: Mar 12 to Nov 21
YOUR Parcel
- ✓Your exact zone, not Rosa's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Rosa
Pull a site-specific report for your exact address in Rosa, Alabama — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Rosa averages can't show:
We read public map data around Rosa — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Rosa average
How we know this about Rosa
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 Rosa’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 Rosa
When does frost risk typically end in Rosa?
The last hard freeze (28°F) in Rosa typically lands around Mar 12, 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 2.
When is the first frost in Rosa?
The first hard freeze (28°F) in Rosa typically arrives around Nov 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 7, so the watching starts about Oct 22 — about 254 days after the spring freeze cleared.
How long is the growing season in Rosa?
Measured between 28°F hard freezes, Rosa sees about 254 frost-free days — roughly Mar 12 through Nov 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 2 to Nov 7, about 219 days.
Is the soil safe to grow vegetables in Rosa?
The federal record around Rosa is a meaningful one — 137 documented sites, mostly Underground Storage Tanks entries (83), the nearest Underground Storage Tanks record about 0.7 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 Rosa?
From about Oct 22 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Rosa's scale — its 8a band and its 254-day season. Your yard writes its own version of Rosa'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 Rosa’s own scale
6 of the readings below were taken at Rosa's own scale — its own ~254-day season between 28°F freezes, the 2,684 acres it covers and 137 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Rosa's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Rosa's own 28°F hard-freeze dates, about Mar 12 and Nov 21 and the ~254-day span between themNOAA 1991–2020 Climate Normals
- 137 documented contamination sites on the federal record near Rosa, the closest Underground Storage Tanks record about 0.7 miles out from the town centreFederal environmental registers
- Rosa's boundary and the 2,684 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~254-day seasonGrowable Ground crop-matching engine
- The ecoregion at Rosa's own centroid, the Southwestern AppalachiansUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Rosa's 2,684 acres read through its county's SSURGO summaryfrom Blount County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Blount 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 Blount County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Rosa's 2,684 acreswhy one lot differs from the next →
- Which side of Rosa you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,684 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.7 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 Rosa-wide figureread your own land →
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