Canyon Lake, California, sits in USDA hardiness zone 9b — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
These conditions suit okra, meyer lemon, california poppy, and artichoke — a starting list any specific site will trim or extend with its own soil, sun, and drainage.
Even in Canyon Lake, 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 Canyon Lake 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 Canyon Lake — soil, climate, flood, and parcel records. How we handle your address.
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Canyon Lake — the short answer
Canyon Lake, California: USDA zone 9b, about 303 days between hard freezes, across 2K acres of city.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 13
- Riverside County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 13
- Riverside County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~303
- Riverside County normal — NOAA 1991–2020, nearest to this town
- City area
- 2K 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 Riverside County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Canyon Lake's average, not your lot's — a low corner or a tree line moves it. Against Canyon Lake's 303-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Canyon Lake
Each reading below is measured for Canyon Lake itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsCanyon Lake runs about 303 days between hard freezes (read from Riverside County, the closest normal to Canyon Lake) — 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
MeasuredCanyon Lake 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 Canyon Lake is in
Canyon Lake sits in the Southern California/Northern Baja Coast — EPA Level III, inside the wider Mediterranean California. That is read at Canyon Lake's own centroid, and it is not what its county reads: Riverside County is mostly Sonoran Basin and Range. The wider page above you is answering a different question about different ground.
What Grows in Canyon Lake
Every plant below cleared Canyon Lake's own zone 9b and its 303-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Canyon Lake?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Jan 16; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 13 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 13 — long-season crops need about 90 days of runway, quick greens only 30. And with a calendar this mild, the honest answer is that planting barely stops — winter opens seasons colder regions never see.
What's on the federal record near Canyon Lake
Closest first, within ~10 miles of Canyon Lake. Listing isn't leaking, and distance isn't exposure.
- ROSALIE PERROTTEBrownfields · 1000 ft
- RCIT - QUAIL VALLEYBrownfields · 2000 ft
- E & A TRUCKING INCBrownfields · 0.6 mi
- VICKIE MORGANBrownfields · 0.6 mi
- ERIK WILLIAMSBrownfields · 0.7 mi
- WRCOG BILGE PAD COLLECTION PROGRAM AT CANYON LAKEBrownfields · 0.8 mi
- KRISTEN RUPPERTBrownfields · 0.9 mi
- CANYON LAKE OPERATIONS DEPTBrownfields · 0.9 mi
- CANYON LAKE HAPPY CAMPBrownfields · 1.0 mi
- TOES IN THE WATER, LLCBrownfields · 1.1 mi
- EVMWDBrownfields · 1.2 mi
- ADVANCE AUTO CAREBrownfields · 1.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Canyon Lake'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 Canyon Lake.
Total Sites
1,348
within ~10 miles of Canyon Lake
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Canyon Lake
Severity Distribution
within ~10 miles of Canyon Lake
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Canyon Lake, Brownfields runs higher than the national average — 919 sites within ~10 miles of Canyon Lake. 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 Canyon Lake
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 Canyon Lake average
Your land is one point inside Canyon Lake
Everything above resolves to Canyon Lake as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Riverside County’s record because no 30-year normal resolves at this city’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 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 Canyon Lake Average
Canyon Lake Average
- ●USDA Zones 9b, averaged across Canyon Lake
- ●One soil character for all of Canyon Lake
- ●Frost dates read at Canyon Lake's scale: Feb 13 to Dec 13
YOUR Parcel
- ✓Your exact zone, not Canyon Lake's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Canyon Lake
Pull a site-specific report for your exact address in Canyon Lake, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Canyon Lake averages can't show:
We read public map data around Canyon Lake — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Canyon Lake average
How we know this about Canyon Lake
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 at Riverside 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 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 Canyon Lake
When does frost risk typically end in Canyon Lake?
The last hard freeze (28°F) in Canyon Lake typically lands around Feb 13, 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 Mar 6.
When is the first frost in Canyon Lake?
The first hard freeze (28°F) in Canyon Lake typically arrives around Dec 13, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 29, so the watching starts about Nov 13 — about 303 days after the spring freeze cleared.
How long is the growing season in Canyon Lake?
Measured between 28°F hard freezes, Canyon Lake sees about 303 frost-free days — roughly Feb 13 through Dec 13, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 6 to Nov 29, about 268 days.
Is the soil safe to grow vegetables in Canyon Lake?
The federal record around Canyon Lake is a meaningful one — 1,348 documented sites, mostly Brownfields entries (919), the nearest Brownfields record about 0.2 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 Canyon Lake?
From about Nov 13 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 13 (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 13. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Canyon Lake's scale — its 9b band and its 303-day season. Your yard writes its own version of Canyon Lake'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 Canyon Lake’s own scale
5 of the readings below were taken at Canyon Lake's own scale — the 2,488 acres it covers and 1,348 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Canyon Lake's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 1,348 documented contamination sites on the federal record near Canyon Lake, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Canyon Lake's boundary and the 2,488 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~303-day seasonGrowable Ground crop-matching engine
- Canyon Lake sits in the Southern California/Northern Baja Coast — not the ecoregion its county mostly readsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Canyon Lake has no normal of its own, so its county's is the closest measured readfrom Riverside County
- Soil character — no town-scale survey exists, so Canyon Lake's 2,488 acres read through its county's SSURGO summaryfrom Riverside County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Riverside 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 Riverside County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Canyon Lake's 2,488 acreswhy one lot differs from the next →
- Which side of Canyon Lake you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,488 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Brownfields record about 0.2 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 Canyon Lake-wide figureread your own land →
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