Blue Lake, California, sits in USDA hardiness zone 9b — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
On paper, okra, meyer lemon, california poppy, and artichoke all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Blue 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 Blue 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 Blue Lake — soil, climate, flood, and parcel records. How we handle your address.
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Blue Lake — the short answer
Blue Lake, California: USDA zone 9b, about 278 days between hard freezes, across 396 acres of city.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 1
- Humboldt County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 4
- Humboldt County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~278
- Humboldt County normal — NOAA 1991–2020, nearest to this town
- City area
- 396 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 Humboldt County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Blue Lake's average, not your lot's — a low corner or a tree line moves it. Against Blue Lake's 278-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Blue Lake
Each reading below is measured for Blue Lake itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsBlue Lake runs about 278 days between hard freezes (read from Humboldt County, the closest normal to Blue 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
MeasuredBlue 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 Blue Lake is in
Blue Lake sits in the Coast Range — EPA Level III, inside the wider Marine West Coast Forest. That is read at Blue Lake's own centroid rather than borrowed from Humboldt County.
What Grows in Blue Lake
Every plant below cleared Blue Lake's own zone 9b and its 278-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Blue Lake?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 4 — 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 Blue Lake
Closest first, within ~10 miles of Blue Lake. Listing isn't leaking, and distance isn't exposure.
- BLUE LAKE POWERBrownfields · 850 ft
- SCOTTS HEAVY EQUIP REPAIRBrownfields · 1200 ft
- CALGON CARBON CORPORATIONBrownfields · 1200 ft
- MICKS TRACTOR RPRBrownfields · 1300 ft
- PACIFIC BELLBrownfields · 1700 ft
- BLUE LAE PATRIOTBrownfields · 2300 ft
- Bluelake PatriotUnderground Storage Tanks · 2400 ft
- 006N002E30M001HNitrate · 0.7 mi
- 006N001E25B001HNitrate · 0.9 mi
- KERNEN CONSTRUCTIONBrownfields · 1.3 mi
- FORD LOGGING INC DBA PACIFIC EARTHSCAPEBrownfields · 1.3 mi
- MAD RIVER STATE FISH HATCHERYBrownfields · 1.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Blue 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 Blue Lake.
Total Sites
315
within ~10 miles of Blue Lake
Risk Level
Elevated
Highest-severity
3 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Blue Lake
Severity Distribution
within ~10 miles of Blue Lake
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Blue Lake, Brownfields runs higher than the national average — 255 sites within ~10 miles of Blue Lake. That's not a problem with your land — it's information about 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 Blue 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 Blue Lake average
Your land is one point inside Blue Lake
Everything above resolves to Blue Lake as a whole — one PHZM band, read across 396 acres, with hard-freeze dates borrowed from Humboldt 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 Blue Lake Average
Blue Lake Average
- ●USDA Zones 9b, averaged across Blue Lake
- ●One soil character for all of Blue Lake
- ●Frost dates read at Blue Lake's scale: Mar 1 to Dec 4
YOUR Parcel
- ✓Your exact zone, not Blue Lake's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Blue Lake
Pull a site-specific report for your exact address in Blue Lake, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Blue Lake averages can't show:
We read public map data around Blue Lake — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Blue Lake average
How we know this about Blue 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 Humboldt 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 Blue Lake
When does frost risk typically end in Blue Lake?
The last hard freeze (28°F) in Blue Lake typically lands around Mar 1, 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 22.
When is the first frost in Blue Lake?
The first hard freeze (28°F) in Blue Lake typically arrives around Dec 4, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 20, so the watching starts about Nov 4 — about 278 days after the spring freeze cleared.
How long is the growing season in Blue Lake?
Measured between 28°F hard freezes, Blue Lake sees about 278 frost-free days — roughly Mar 1 through Dec 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 22 to Nov 20, about 243 days.
Is the soil safe to grow vegetables in Blue Lake?
The federal record around Blue Lake is a meaningful one — 315 documented sites, mostly Brownfields entries (255), 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 Blue Lake?
From about Nov 4 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 4 (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 4. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Blue Lake's scale — its 9b band and its 278-day season. Your yard writes its own version of Blue 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 Blue Lake’s own scale
5 of the readings below were taken at Blue Lake's own scale — the 396 acres it covers and 315 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Blue Lake's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 315 documented contamination sites on the federal record near Blue Lake, the closest Brownfields record about 0.2 miles out from the town centreFederal environmental registers
- Blue Lake's boundary and the 396 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~278-day seasonGrowable Ground crop-matching engine
- The ecoregion at Blue Lake's own centroid, the Coast RangeUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Blue Lake has no normal of its own, so its county's is the closest measured readfrom Humboldt County
- Soil character — no town-scale survey exists, so Blue Lake's 396 acres read through its county's SSURGO summaryfrom Humboldt County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Humboldt 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 Humboldt County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Blue Lake's 396 acreswhy one lot differs from the next →
- Which side of Blue 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 396 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 Blue Lake-wide figureread your own land →
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