Calera, Alabama, sits in USDA hardiness zone 8b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Well-matched crops include cabbage, fig, 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 Calera, 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 Calera 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 Calera — soil, climate, flood, and parcel records. How we handle your address.
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Calera — the short answer
Calera, Alabama: USDA zone 8b, about 281 days between hard freezes, across 16K acres of city.
- USDA zone
- 8b
- 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
- City area
- 16K 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 8b is Calera's average, not your lot's — a low corner or a tree line moves it. Against Calera's 281-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Calera
Each reading below is measured for Calera itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsCalera runs about 281 days between hard freezes (read from Shelby County, the closest normal to Calera) — 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
MeasuredCalera sits in USDA hardiness zone 8b.
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 Calera is in
Calera sits in the Ridge and Valley — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Calera's own centroid rather than borrowed from Shelby County.
What Grows in Calera
Every plant below cleared Calera's own zone 8b and its 281-day season. Each card opens that plant's Alabama profile. How we score.
Is it too late to plant in Calera?
Rarely: the season closes in stages, not all at once, and each stage has its crops. 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. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
What's on the federal record near Calera
Closest first, within ~10 miles of Calera. Listing isn't leaking, and distance isn't exposure.
- DOGTOWN CHEVRONUnderground Storage Tanks · 1.0 mi
- SASHWOT LLC DBA SD FOOD MARTUnderground Storage Tanks · 1.1 mi
- CALERA FOOD MARTUnderground Storage Tanks · 1.3 mi
- CALERA CHEVRONUnderground Storage Tanks · 1.3 mi
- SAYORA FOOD MARTUnderground Storage Tanks · 1.3 mi
- CITY OF CALERAUnderground Storage Tanks · 1.3 mi
- SPEEDTRAC INCUnderground Storage Tanks · 1.4 mi
- SOUTHERN HAULERS LLCBrownfields · 1.4 mi
- MOORE'S SUPREME #3Underground Storage Tanks · 1.4 mi
- CALERA QUARRYUnderground Storage Tanks · 1.4 mi
- STEWART'S GROCERYUnderground Storage Tanks · 1.4 mi
- MERIDIAN RAILToxics Release Inventory · 1.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Calera'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 Calera.
Total Sites
278
within ~10 miles of Calera
Risk Level
Elevated
Highest-severity
2 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Calera
Severity Distribution
within ~10 miles of Calera
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Calera, two things run higher than the national average within ~10 miles of Calera — Toxics Release Inventory (26 sites) and PFAS (3 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Calera
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 Calera average
Your land is one point inside Calera
Everything above resolves to Calera as a whole — one PHZM band, read across 16K acres, with hard-freeze dates borrowed from Shelby County’s record because no 30-year normal resolves at this city’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 city 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 Calera Average
Calera Average
- ●USDA Zones 8b, averaged across Calera
- ●One soil character for all of Calera
- ●Frost dates read at Calera's scale: Feb 23 to Dec 1
YOUR Parcel
- ✓Your exact zone, not Calera's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Calera
Pull a site-specific report for your exact address in Calera, Alabama — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Calera averages can't show:
We read public map data around Calera — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Calera average
How we know this about Calera
The datasets: hardiness from the USDA ARS Plant Hardiness Zone Map 2023, read at this city’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 city grain anywhere on this page — there is no city-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 Calera
When does frost risk typically end in Calera?
The last hard freeze (28°F) in Calera 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 Calera?
The first hard freeze (28°F) in Calera 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 Calera?
Measured between 28°F hard freezes, Calera 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 Calera?
The federal record around Calera is a meaningful one — 278 documented sites, mostly Underground Storage Tanks entries (155), the nearest Underground Storage Tanks record about 1.0 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 Calera?
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 Calera's scale — its 8b band and its 281-day season. Your yard writes its own version of Calera'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 Calera’s own scale
5 of the readings below were taken at Calera's own scale — the 15,556 acres it covers and 278 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Calera's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 278 documented contamination sites on the federal record near Calera, the closest Underground Storage Tanks record about 1.0 miles out from the town centreFederal environmental registers
- Calera's boundary and the 15,556 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~281-day seasonGrowable Ground crop-matching engine
- The ecoregion at Calera's own centroid, the Ridge and ValleyUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Calera 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 Calera's 15,556 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 Calera's 15,556 acreswhy one lot differs from the next →
- Which side of Calera you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 15,556 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 1.0 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 Calera-wide figureread your own land →
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