Trinity Village, California, sits in USDA hardiness zone 9a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
On paper, artichoke, fig, california poppy, and cabbage all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Trinity Village, 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 Trinity Village 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 Trinity Village — soil, climate, flood, and parcel records. How we handle your address.
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Trinity Village — the short answer
Trinity Village, California: USDA zone 9a, about 286 days between hard freezes, across 3K acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Dec 4
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~286
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 3K 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 Trinity Village's average, not your lot's — a low corner or a tree line moves it. Against Trinity Village's 286-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Trinity Village
Each reading below is measured for Trinity Village itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredTrinity Village runs about 286 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
MeasuredTrinity Village 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 Trinity Village is in
Trinity Village sits in the Klamath Mountains/California High North Coast Range — EPA Level III, inside the wider Northwestern Forested Mountains. That is read at Trinity Village's own centroid rather than borrowed from Trinity County.
What Grows in Trinity Village
Every plant below cleared Trinity Village's own zone 9a and its 286-day season. Each card opens that plant's California profile. How we score.
Is it too late to plant in Trinity Village?
Too late for some crops, right on time for others — a growing season is a sequence, not a deadline. Cool-season crops can go in from around Jan 24; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 21 (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 Trinity Village
Closest first, within ~10 miles of Trinity Village. Listing isn't leaking, and distance isn't exposure.
- 006N006E19G001HNitrate · 1.9 mi
- SALYER GUARD STATIONBrownfields · 3.8 mi
- Koon RanchMining · 4.9 mi
- BURNT RANCH TRANSFER STATIONBrownfields · 5.1 mi
- MCKNIGHT READI MIX/MCKNIGHT LOGGING & CONSTRUCTIONBrownfields · 5.4 mi
- Last ChanceMining · 6.1 mi
- WILLOW CREEK TOWING & AUTO REPAIRBrownfields · 6.2 mi
- R BROWN CONSTRUCTION COMPANY INCBrownfields · 6.5 mi
- LOST CREEK FARMSBrownfields · 6.9 mi
- PANTHER GAP ORGANIC RANCHBrownfields · 6.9 mi
- BUDDYS AUTO CENTER INCBrownfields · 7.0 mi
- FRONTIER CALIFORNIA INCBrownfields · 7.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Trinity Village'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 Trinity Village.
Sources Checked
within ~10 miles of Trinity Village
Severity Distribution
within ~10 miles of Trinity Village
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Trinity Village, two things run higher than the national average within ~10 miles of Trinity Village — Mining (8 sites) and Brownfields (18 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Mining: Mining sites — both historic and active — can leach heavy metals (arsenic, lead, cadmium, mercury) into soil and water for centuries after operations cease.
Brownfields: Brownfield sites are former commercial or industrial properties where legacy soil contamination (heavy metals, PAHs, petroleum compounds) may persist.
Test soil for heavy metals (lead, arsenic, cadmium, mercury) — this is essential near any mining site.
Check EPA brownfield remediation status — many sites have completed cleanup with institutional controls.
Check your specific parcel in Trinity Village
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 Trinity Village average
Your land is one point inside Trinity Village
Everything above resolves to Trinity Village as a whole — one PHZM band and one 28°F frost record, read across 3K 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 Trinity Village Average
Trinity Village Average
- ●USDA Zones 9a, averaged across Trinity Village
- ●One soil character for all of Trinity Village
- ●Frost dates read at Trinity Village's scale: Feb 21 to Dec 4
YOUR Parcel
- ✓Your exact zone, not Trinity Village's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Trinity Village
Pull a site-specific report for your exact address in Trinity Village, California — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Trinity Village averages can't show:
We read public map data around Trinity Village — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Trinity Village average
How we know this about Trinity Village
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 Trinity Village’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 Trinity Village
When does frost risk typically end in Trinity Village?
The last hard freeze (28°F) in Trinity Village typically lands around Feb 21, 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 14.
When is the first frost in Trinity Village?
The first hard freeze (28°F) in Trinity Village 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 286 days after the spring freeze cleared.
How long is the growing season in Trinity Village?
Measured between 28°F hard freezes, Trinity Village sees about 286 frost-free days — roughly Feb 21 through Dec 4, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 14 to Nov 20, about 251 days.
Is the soil safe to grow vegetables in Trinity Village?
The federal record around Trinity Village is light — 33 documented sites across the 9 federal source types we checked, mostly Brownfields entries (18), the nearest Nitrate record about 1.9 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 Trinity Village?
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 Trinity Village's scale — its 9a band and its 286-day season. Your yard writes its own version of Trinity Village'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 Trinity Village’s own scale
6 of the readings below were taken at Trinity Village's own scale — its own ~286-day season between 28°F freezes, the 2,568 acres it covers and 33 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Trinity Village's own USDA hardiness band, zones 9aUSDA PHZM 2023
- Trinity Village's own 28°F hard-freeze dates, about Feb 21 and Dec 4 and the ~286-day span between themNOAA 1991–2020 Climate Normals
- 33 documented contamination sites on the federal record near Trinity Village, the closest Nitrate record about 1.9 miles out from the town centreFederal environmental registers
- Trinity Village's boundary and the 2,568 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~286-day seasonGrowable Ground crop-matching engine
- The ecoregion at Trinity Village's own centroid, the Klamath Mountains/California High North Coast RangeUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Trinity Village's 2,568 acres read through its county's SSURGO summaryfrom Trinity County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Trinity 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 Trinity County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Trinity Village's 2,568 acreswhy one lot differs from the next →
- Which side of Trinity Village you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,568 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Nitrate record about 1.9 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 Trinity Village-wide figureread your own land →
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