Biola, California, sits in USDA hardiness zone 9a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
On paper, tomato, artichoke, fig, and california poppy all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Biola, 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 Biola 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 Biola — soil, climate, flood, and parcel records. How we handle your address.
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Biola — the short answer
Biola, California: USDA zone 9a, about 329 days between hard freezes, across 414 acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Jan 16
- Fresno County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 11
- Fresno County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~329
- Fresno County normal — NOAA 1991–2020, nearest to this town
- Town area
- 414 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 Fresno County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Biola's average, not your lot's — a low corner or a tree line moves it. Against Biola's 329-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Biola
Each reading below is measured for Biola itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsBiola runs about 329 days between hard freezes (read from Fresno County, the closest normal to Biola) — 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
MeasuredBiola sits in USDA hardiness zone 9a.
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 Biola is in
Biola sits in the Central California Valley — EPA Level III, inside the wider Mediterranean California. That is read at Biola's own centroid rather than borrowed from Fresno County.
What Grows in Biola
Plants matched to Biola's USDA zones 9a, ordered by how much hardiness margin each has here — the ones with room to spare at both ends of this town's band lead. Each links to its full growing profile.
Is it too late to plant in Biola?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Jan 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 16 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 11 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.
What's on the federal record near Biola
Closest first, within ~10 miles of Biola. Listing isn't leaking, and distance isn't exposure.
- FRESNO COUNTY PUBLIC WORKS YARDBrownfields · 800 ft
- ACTAGRO LLCToxics Release Inventory · 1100 ft
- SEALED AIR CORPORATIONToxics Release Inventory · 1400 ft
- SEALED AIR CORPORATIONBrownfields · 1400 ft
- POLYCELL PACKAGING CORPERATIONBrownfields · 1400 ft
- CAMPOS FAMILY FARMS LLCBrownfields · 1400 ft
- NUTRIAG USA LTDBrownfields · 1600 ft
- NUTRIAG USA LTDToxics Release Inventory · 1600 ft
- WESTERN STRATEGIC MATERIALS INCBrownfields · 1700 ft
- GOLDEN EXPLORATION AND PROD CORPBrownfields · 2600 ft
- AGRICULTURAL MANAGEMENT SERVICES INCBrownfields · 1.2 mi
- WESTERN AG CHIPPING LLCBrownfields · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Biola'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 Biola.
Total Sites
739
within ~10 miles of Biola
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Biola
Severity Distribution
within ~10 miles of Biola
A note from Gnorman
What an experienced grower watches for around here
In and around Biola, Brownfields runs higher than the national average — 555 sites within ~10 miles of Biola. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Biola
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 Biola average
Your land is one point inside Biola
Everything above resolves to Biola as a whole — one PHZM band, read across 414 acres, with hard-freeze dates borrowed from Fresno 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 Biola Average
Biola Average
- ●USDA Zones 9a, averaged across Biola
- ●One soil character for all of Biola
- ●Frost dates read at Biola's scale: Jan 16 to Dec 11
YOUR Parcel
- ✓Your exact zone, not Biola's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Biola
Pull a site-specific report for your exact address in Biola, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Biola averages can't show:
We read public map data around Biola — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Biola average
How we know this about Biola
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 Fresno 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 Biola
When does frost risk typically end in Biola?
The last hard freeze (28°F) in Biola typically lands around Jan 16, 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 Feb 6.
When is the first frost in Biola?
The first hard freeze (28°F) in Biola typically arrives around Dec 11, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 27, so the watching starts about Nov 11 — about 329 days after the spring freeze cleared.
How long is the growing season in Biola?
Measured between 28°F hard freezes, Biola sees about 329 frost-free days — roughly Jan 16 through Dec 11, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 6 to Nov 27, about 294 days.
Is the soil safe to grow vegetables in Biola?
The federal record around Biola is a meaningful one — 739 documented sites, mostly Brownfields entries (555), the nearest Brownfields record about 0.1 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 Biola?
From about Nov 11 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 11 (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 11. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Biola's scale — its 9a band and its 329-day season. Your yard writes its own version of Biola'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 Biola’s own scale
4 of the readings below were taken at Biola's own scale — the 414 acres it covers and 739 documented sites around it; 6 are borrowed from a wider read, named and linked below.
Measured here
- Biola's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 739 documented contamination sites on the federal record near Biola, the closest Brownfields record about 0.1 miles out from the town centreFederal environmental registers
- Biola's boundary and the 414 acres inside itUS Census TIGER/Line 2025
- The ecoregion at Biola's own centroid, the Central California ValleyUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Biola has no normal of its own, so its county's is the closest measured readfrom Fresno County
- Soil character — no town-scale survey exists, so Biola's 414 acres read through its county's SSURGO summaryfrom Fresno County
- The candidate plant list — California's curated set, filtered to this zone band and re-ordered by how much margin each has herefrom California
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Fresno County
- The growing challenges every California grower plans around — written at state scale, so they stay on the state guidefrom California
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Fresno County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Biola's 414 acreswhy one lot differs from the next →
- Which side of Biola you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 414 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.1 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 Biola-wide figureread your own land →