Trabuco Canyon, California, sits in USDA hardiness zone 10b — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include artichoke, meyer lemon, california poppy, and cabbage; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Trabuco Canyon, 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 Trabuco Canyon 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 Trabuco Canyon — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Trabuco Canyon — the short answer
Trabuco Canyon, California: USDA zone 10b, no 28°F killing freeze on record — the season is year-round, across 5K acres of town.
- USDA zone
- 10b
- USDA PHZM 2023
- Killing freeze
- None on record
- NOAA RCC ACIS 1991–2020, this town’s own record
- Town area
- 5K 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 10b is Trabuco Canyon's average, not your lot's — a low corner or a tree line moves it. Against Trabuco Canyon'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 Trabuco Canyon
Each reading below is measured for Trabuco Canyon itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Winter hardiness
MeasuredTrabuco Canyon sits in USDA hardiness zone 10b.
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 Trabuco Canyon is in
Trabuco Canyon sits in the Southern California/Northern Baja Coast — EPA Level III, inside the wider Mediterranean California. That is read at Trabuco Canyon's own centroid rather than borrowed from Orange County.
What Grows in Trabuco Canyon
Every plant below cleared Trabuco Canyon's own zone 10b. Each card opens that plant's California profile. How we score.
What's on the federal record near Trabuco Canyon
Closest first, within ~10 miles of Trabuco Canyon. Listing isn't leaking, and distance isn't exposure.
- ST MICHAEL'S PREPARATORY SCHOOLBrownfields · 1.6 mi
- PEP BOYS #6483Brownfields · 1.7 mi
- SANTA MARGARITA WATER DISTRICT - ALTISIMA PUMP STATIONBrownfields · 1.7 mi
- Wilhunt MinesMining · 1.7 mi
- RELLIN CREATIVE IMAGING, INC. DBA;DIGITAL PHOTO GRAPHIXBrownfields · 2.0 mi
- TOM REUTTERBrownfields · 2.1 mi
- USNAVY GOLDEN BEAR ARBORISTS INCBrownfields · 2.1 mi
- MERCADO CLNRSBrownfields · 2.1 mi
- CIRCLE K STORE #2709428Brownfields · 2.1 mi
- Circle K Stores Inc. Site #2709428Underground Storage Tanks · 2.1 mi
- RITE AID #5758Brownfields · 2.1 mi
- GREGGS SANTA MARGARITA MOBILBrownfields · 2.1 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Trabuco Canyon'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 Trabuco Canyon.
Sources Checked
within ~10 miles of Trabuco Canyon
Severity Distribution
within ~10 miles of Trabuco Canyon
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Trabuco Canyon, Brownfields runs higher than the national average — 2,184 sites within ~10 miles of Trabuco Canyon. 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 Trabuco Canyon
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 Trabuco Canyon average
Your land is one point inside Trabuco Canyon
Everything above resolves to Trabuco Canyon as a whole — one PHZM band and one 28°F frost record, read across 5K 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 Trabuco Canyon Average
Trabuco Canyon Average
- ●USDA Zones 10b, averaged across Trabuco Canyon
- ●One soil character for all of Trabuco Canyon
- ●State-average frost dates
YOUR Parcel
- ✓Your exact zone, not Trabuco Canyon's 10b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Trabuco Canyon
Pull a site-specific report for your exact address in Trabuco Canyon, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Trabuco Canyon averages can't show:
We read public map data around Trabuco Canyon — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Trabuco Canyon average
How we know this about Trabuco Canyon
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, 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 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 Trabuco Canyon
Is it too late to plant in Trabuco Canyon?
No — Trabuco Canyon 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 Trabuco Canyon?
It doesn't — Trabuco Canyon 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 Trabuco Canyon?
Year-round — the 1991–2020 station record for Trabuco Canyon 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 Trabuco Canyon?
The federal record around Trabuco Canyon runs heavier than most — 2,366 documented sites, mostly Brownfields entries (2,184), the nearest Brownfields record about 1.6 miles out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
Everything above is measured at Trabuco Canyon's scale — its 10b band and its no killing freeze on record. Your yard writes its own version of Trabuco Canyon'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 Trabuco Canyon’s own scale
6 of the readings below were taken at Trabuco Canyon's own scale — the 4,661 acres it covers and 2,366 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Trabuco Canyon's own USDA hardiness band, zones 10bUSDA PHZM 2023
- No 28°F killing freeze in the 30-year station record covering Trabuco Canyon — a year-round growing seasonNOAA Regional Climate Centers ACIS, 1991-2020
- 2,366 documented contamination sites on the federal record near Trabuco Canyon, the closest Brownfields record about 1.6 miles out from the town centreFederal environmental registers
- Trabuco Canyon's boundary and the 4,661 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear Trabuco Canyon's hardiness zoneGrowable Ground crop-matching engine
- The ecoregion at Trabuco Canyon'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 Trabuco Canyon's 4,661 acres read through its county's SSURGO summaryfrom Orange County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Orange 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 Orange County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Trabuco Canyon's 4,661 acreswhy one lot differs from the next →
- Which side of Trabuco Canyon you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,661 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 1.6 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 Trabuco Canyon-wide figureread your own land →