California Hot Springs, California, sits in USDA hardiness zone 9a — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Growers here do well with artichoke, fig, california poppy, and cabbage — with the usual caveat that any single yard's soil, sun, and drainage cast the deciding vote.
Even in California Hot Springs, 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 California Hot Springs 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 California Hot Springs — soil, climate, flood, and parcel records. How we handle your address.
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California Hot Springs — the short answer
California Hot Springs, California: USDA zone 9a, about 269 days between hard freezes, across 577 acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 11
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Dec 5
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~269
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 577 acres
- US Census TIGER/Line 2025
Every figure names the dataset it came from. Hard-freeze dates are this town’s own 28°F normals: light frosts run a few weeks past them, and tender transplants usually wait 2–3 weeks after the last hard freeze.
Hardiness Zone Range
Zone 9a is California Hot Springs's average, not your lot's — a low corner or a tree line moves it. Against California Hot Springs's 269-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in California Hot Springs
Each reading below is measured for California Hot Springs itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredCalifornia Hot Springs runs about 269 days between hard freezes — 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
MeasuredCalifornia Hot Springs 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 California Hot Springs is in
California Hot Springs sits in the Central California Foothills and Coastal Mountains — EPA Level III, inside the wider Mediterranean California. That is read at California Hot Springs's own centroid, and it is not what its county reads: Tulare County is mostly Sierra Nevada. The wider page above you is answering a different question about different ground.
What Grows in California Hot Springs
Every plant below cleared California Hot Springs's own zone 9a and its 269-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in California Hot Springs?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Feb 11; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 11 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 5 — 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 California Hot Springs
Closest first, within ~10 miles of California Hot Springs. Listing isn't leaking, and distance isn't exposure.
- 023S031E31N001MNitrate · 1.5 mi
- 023S030E35H001MNitrate · 2.5 mi
- MJ BATESBrownfields · 2.6 mi
- White River ClaimsMining · 2.6 mi
- White River ProspectMining · 2.6 mi
- 023S032E14Q002MNitrate · 9.5 mi
Measured from California Hot Springs'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 California Hot Springs.
Total Sites
9
within ~10 miles of California Hot Springs
Risk Level
Low
Highest-severity
2 mining sites (prospects, none worked)
Sources Checked
within ~10 miles of California Hot Springs
Severity Distribution
within ~10 miles of California Hot Springs
Highest-Severity Sites
Know Before You Grow
- •On a private well, test for nitrates: above 10 mg/L the water needs treatment before irrigating.
- •Mine waste leaches heavy metals. Test for lead, arsenic and cadmium before growing food here.
- •Near a brownfield, raised beds of imported soil give your food clean ground.
Check your specific parcel in California Hot Springs
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 California Hot Springs average
Your land is one point inside California Hot Springs
Everything above resolves to California Hot Springs as a whole — one PHZM band and one 28°F frost record, read across 577 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 California Hot Springs Average
California Hot Springs Average
- ●USDA Zones 9a, averaged across California Hot Springs
- ●One soil character for all of California Hot Springs
- ●Frost dates read at California Hot Springs's scale: Mar 11 to Dec 5
YOUR Parcel
- ✓Your exact zone, not California Hot Springs's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in California Hot Springs
Pull a site-specific report for your exact address in California Hot Springs, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that California Hot Springs averages can't show:
We read public map data around California Hot Springs — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the California Hot Springs average
How we know this about California Hot Springs
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 California Hot Springs’s own record; 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 California Hot Springs
When does frost risk typically end in California Hot Springs?
The last hard freeze (28°F) in California Hot Springs typically lands around Mar 11, 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 Apr 1.
When is the first frost in California Hot Springs?
The first hard freeze (28°F) in California Hot Springs typically arrives around Dec 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 21, so the watching starts about Nov 5 — about 269 days after the spring freeze cleared.
How long is the growing season in California Hot Springs?
Measured between 28°F hard freezes, California Hot Springs sees about 269 frost-free days — roughly Mar 11 through Dec 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 1 to Nov 21, about 234 days.
Is the soil safe to grow vegetables in California Hot Springs?
The federal record around California Hot Springs is light — 9 documented sites across the 9 federal source types we checked, mostly Nitrate entries (6), the nearest Nitrate record about 1.5 miles out — and proximity to a documented site is information, not a diagnosis of any one yard. Growing food here starts from a strong position; a soil test before new food beds settles any site-specific question.
How do I protect my plants from frost in California Hot Springs?
From about Nov 5 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at California Hot Springs's scale — its 9a band and its 269-day season. Your yard writes its own version of California Hot Springs'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 California Hot Springs’s own scale
6 of the readings below were taken at California Hot Springs's own scale — its own ~269-day season between 28°F freezes, the 577 acres it covers and 9 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- California Hot Springs's own USDA hardiness band, zones 9aUSDA PHZM 2023
- California Hot Springs's own 28°F hard-freeze dates, about Mar 11 and Dec 5 and the ~269-day span between themNOAA 1991–2020 Climate Normals
- 9 documented contamination sites on the federal record near California Hot Springs, the closest Nitrate record about 1.5 miles out from the town centreFederal environmental registers
- California Hot Springs's boundary and the 577 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~269-day seasonGrowable Ground crop-matching engine
- California Hot Springs sits in the Central California Foothills and Coastal Mountains — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so California Hot Springs's 577 acres read through its county's SSURGO summaryfrom Tulare County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Tulare 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 Tulare County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among California Hot Springs's 577 acreswhy one lot differs from the next →
- Which side of California Hot Springs you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 577 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 1.5 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 California Hot Springs-wide figureread your own land →
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