San Fernando, California, sits in USDA hardiness zone 10a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
Growers here do well with artichoke, meyer lemon, california poppy, and cabbage — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in San Fernando, 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 San Fernando 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 San Fernando — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
San Fernando — the short answer
San Fernando, California: USDA zone 10a, no 28°F killing freeze on record — the season is year-round, across 2K acres of city.
- USDA zone
- 10a
- USDA PHZM 2023
- Killing freeze
- None on record
- NOAA RCC ACIS 1991–2020, this town’s own record
- City area
- 2K acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. The year-round finding is measured — a 30-year record with no 28°F killing freeze in it — never inferred from missing dates.
Hardiness Zone Range
Zone 10a is San Fernando's average, not your lot's — a low corner or a tree line moves it. Against San Fernando's no killing freeze on record, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in San Fernando
Each reading below is measured for San Fernando itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Winter hardiness
MeasuredSan Fernando sits in USDA hardiness zone 10a.
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 San Fernando is in
San Fernando sits in the Southern California/Northern Baja Coast — EPA Level III, inside the wider Mediterranean California. That is read at San Fernando's own centroid rather than borrowed from Los Angeles County.
What Grows in San Fernando
Every plant below cleared San Fernando's own zone 10a. Each card opens that plant's California profile. How we score.
What's on the federal record near San Fernando
Closest first, within ~10 miles of San Fernando. Listing isn't leaking, and distance isn't exposure.
- ALLSTATE AUTO ELECTRICBrownfields · 450 ft
- MACLAY AUTO MOTORBrownfields · 550 ft
- TURTLE LOGISTICS INCBrownfields · 600 ft
- SAN FERNANDO MOTORCYCLE SVBrownfields · 650 ft
- PROVIDENCE MEDICAL INSTITUTEBrownfields · 750 ft
- ARCO - MACLAY INC.Underground Storage Tanks · 800 ft
- LAUSD/MORNINGSIDE ELEMBrownfields · 850 ft
- SAN FERNANDO-CITY, WATER DEPT.PFAS · 850 ft
- SAN FERNANDO BRAKE&TIRE INCBrownfields · 1200 ft
- JUSTIN HERSHEYBrownfields · 1200 ft
- DUNNS SUPER SVC INCBrownfields · 1300 ft
- WESTERN DENTAL SERVICES INCBrownfields · 1800 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from San Fernando'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 San Fernando.
Total Sites
7,516
within ~10 miles of San Fernando
Risk Level
Elevated
Highest-severity
26 Superfund sites
Sources Checked
within ~10 miles of San Fernando
Severity Distribution
within ~10 miles of San Fernando
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around San Fernando, Brownfields runs higher than the national average — 6,812 sites within ~10 miles of San Fernando. Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.
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 San Fernando
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 San Fernando average
Your land is one point inside San Fernando
Everything above resolves to San Fernando as a whole — one PHZM band and one 28°F frost record, read across 2K 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 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 San Fernando Average
San Fernando Average
- ●USDA Zones 10a, averaged across San Fernando
- ●One soil character for all of San Fernando
- ●State-average frost dates
YOUR Parcel
- ✓Your exact zone, not San Fernando's 10a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in San Fernando
Pull a site-specific report for your exact address in San Fernando, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that San Fernando averages can't show:
We read public map data around San Fernando — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the San Fernando average
How we know this about San Fernando
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, with the labelled statewide window where none resolves; 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 San Fernando
Is it too late to plant in San Fernando?
No — San Fernando has no 28°F killing freeze in the 30-year station record, so the growing season is year-round and there is no last-frost date to wait for. Planting is paced by rainfall, heat and daylength instead of by frost: start heat-lovers any month, and time cool-season crops (lettuce, brassicas, peas) for the cooler, wetter half of the year or for higher ground. Succession sowing every few weeks works all year, so the limit is what you can keep watered and harvested, not the calendar.
When does frost risk typically end in San Fernando?
It doesn't — San Fernando records no 28°F killing freeze at all across the 1991–2020 station record, so there is no spring frost date to plant after. Cold still matters with elevation: the higher you garden, the cooler the nights, and a few tropical crops sulk below about 60°F even where they never freeze.
How long is the growing season in San Fernando?
Year-round — the 1991–2020 station record for San Fernando contains no 28°F killing freeze, so there is no season to measure between freezes. What paces planting instead is heat, rainfall and daylength: the hottest, wettest stretch is the hard part for cool-season crops, not winter. Elevation is the one real exception — the higher you garden, the colder the nights get.
Is the soil safe to grow vegetables in San Fernando?
The federal record around San Fernando is a meaningful one — 7,516 documented sites, mostly Brownfields entries (6,812), the nearest Brownfields 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.
Everything above is measured at San Fernando's scale — its 10a band and its no killing freeze on record. Your yard writes its own version of San Fernando'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 San Fernando’s own scale
6 of the readings below were taken at San Fernando's own scale — the 1,519 acres it covers and 7,516 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- San Fernando's own USDA hardiness band, zones 10aUSDA PHZM 2023
- No 28°F killing freeze in the 30-year station record covering San Fernando — a year-round growing seasonNOAA Regional Climate Centers ACIS, 1991-2020
- 7,516 documented contamination sites on the federal record near San Fernando, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- San Fernando's boundary and the 1,519 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear San Fernando's hardiness zoneGrowable Ground crop-matching engine
- The ecoregion at San Fernando's own centroid, the Southern California/Northern Baja CoastUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so San Fernando's 1,519 acres read through its county's SSURGO summaryfrom Los Angeles County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Los Angeles 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 Los Angeles County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among San Fernando's 1,519 acreswhy one lot differs from the next →
- Which side of San Fernando you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,519 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields 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 San Fernando-wide figureread your own land →