Yucaipa, California, sits in USDA hardiness zone 9b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Crops well matched to these conditions include artichoke, meyer lemon, california poppy, and cabbage — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Yucaipa, 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 Yucaipa 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 Yucaipa — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Yucaipa — the short answer
Yucaipa, California: USDA zone 9b, no 28°F killing freeze on record — the season is year-round, across 18K acres of city.
- USDA zone
- 9b
- USDA PHZM 2023
- Killing freeze
- None on record
- NOAA RCC ACIS 1991–2020, this town’s own record
- City area
- 18K 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 9b is Yucaipa's average, not your lot's — a low corner or a tree line moves it. Against Yucaipa'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 Yucaipa
Each reading below is measured for Yucaipa itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Winter hardiness
MeasuredYucaipa sits in USDA hardiness zone 9b.
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 Yucaipa is in
Yucaipa sits in the Southern California/Northern Baja Coast — EPA Level III, inside the wider Mediterranean California. That is read at Yucaipa's own centroid, and it is not what its county reads: San Bernardino County is mostly Mojave Basin and Range. The wider page above you is answering a different question about different ground.
What Grows in Yucaipa
Every plant below cleared Yucaipa's own zone 9b. Each card opens that plant's California profile. How we score.
What's on the federal record near Yucaipa
Closest first, within ~10 miles of Yucaipa. Listing isn't leaking, and distance isn't exposure.
- YUCAIPAS AUTO SERVICEBrownfields · 25 ft
- JPT GARAGEBrownfields · 300 ft
- IMPERIAL DENTAL PRACTICE & ORTHODONICSBrownfields · 300 ft
- ONE STOP TIRE AND AUTO REPAIRBrownfields · 300 ft
- J & S AUTO REPAIRBrownfields · 300 ft
- Frontier California, Inc.: Yucaipa COUnderground Storage Tanks · 400 ft
- CALTRANS DIST 8 CONSTRUCTION- EA 08-0K2934Brownfields · 500 ft
- SONNYS RADIATORBrownfields · 500 ft
- TRISHA ENTERPRISEUnderground Storage Tanks · 550 ft
- TRICHA ENT INC/ANB GAS MART #1Brownfields · 550 ft
- A&M AUTO REPAIR & TIREBrownfields · 750 ft
- STUNTWORLD INCBrownfields · 800 ft
6 more sites are on the record inside the same radius. See them on the map
Measured from Yucaipa'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 Yucaipa.
Total Sites
1,196
within ~10 miles of Yucaipa
Risk Level
Elevated
Highest-severity
5 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Yucaipa
Severity Distribution
within ~10 miles of Yucaipa
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Yucaipa, two things run higher than the national average within ~10 miles of Yucaipa — Brownfields (787 sites) and Nitrate (318 sites). 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.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Yucaipa
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 Yucaipa average
Your land is one point inside Yucaipa
Everything above resolves to Yucaipa as a whole — one PHZM band and one 28°F frost record, read across 18K 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 Yucaipa Average
Yucaipa Average
- ●USDA Zones 9b, averaged across Yucaipa
- ●One soil character for all of Yucaipa
- ●State-average frost dates
YOUR Parcel
- ✓Your exact zone, not Yucaipa's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Yucaipa
Pull a site-specific report for your exact address in Yucaipa, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Yucaipa averages can't show:
We read public map data around Yucaipa — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Yucaipa average
How we know this about Yucaipa
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 Yucaipa
Is it too late to plant in Yucaipa?
No — Yucaipa 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 Yucaipa?
It doesn't — Yucaipa 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 Yucaipa?
Year-round — the 1991–2020 station record for Yucaipa 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 Yucaipa?
The federal record around Yucaipa is a meaningful one — 1,196 documented sites, mostly Brownfields entries (787), 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 Yucaipa's scale — its 9b band and its no killing freeze on record. Your yard writes its own version of Yucaipa'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 Yucaipa’s own scale
6 of the readings below were taken at Yucaipa's own scale — the 18,085 acres it covers and 1,196 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Yucaipa's own USDA hardiness band, zones 9bUSDA PHZM 2023
- No 28°F killing freeze in the 30-year station record covering Yucaipa — a year-round growing seasonNOAA Regional Climate Centers ACIS, 1991-2020
- 1,196 documented contamination sites on the federal record near Yucaipa, the closest Brownfields record under a tenth of a mile out from the town centreFederal environmental registers
- Yucaipa's boundary and the 18,085 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear Yucaipa's hardiness zoneGrowable Ground crop-matching engine
- Yucaipa sits in the Southern California/Northern Baja Coast — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Yucaipa's 18,085 acres read through its county's SSURGO summaryfrom San Bernardino County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom San Bernardino 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 San Bernardino County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Yucaipa's 18,085 acreswhy one lot differs from the next →
- Which side of Yucaipa you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 18,085 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 Yucaipa-wide figureread your own land →
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