Trinidad, Texas, sits in USDA hardiness zone 8b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
On paper, cabbage, fig, california poppy, and collard greens all suit these conditions — on the ground, soil, sun, and drainage make the final call.
Even in Trinidad, 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 Trinidad 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 Trinidad — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Trinidad — the short answer
Trinidad, Texas: USDA zone 8b, about 282 days between hard freezes, across 10K acres of city.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 19
- Henderson County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 28
- Henderson County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~282
- Henderson County normal — NOAA 1991–2020, nearest to this town
- City area
- 10K 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 Henderson County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Trinidad's average, not your lot's — a low corner or a tree line moves it. Against Trinidad's 282-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Trinidad
Each reading below is measured for Trinidad itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsTrinidad runs about 282 days between hard freezes (read from Henderson County, the closest normal to Trinidad) — 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
MeasuredTrinidad sits in USDA hardiness zone 8b.
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 Trinidad is in
Trinidad sits in the East Central Texas Plains — EPA Level III, inside the wider Eastern Temperate Forests. That is read at Trinidad's own centroid rather than borrowed from Henderson County.
What Grows in Trinidad
Every plant below cleared Trinidad's own zone 8b and its 282-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Trinidad?
Usually not — gardeners here simply switch what goes in the ground as the season moves. Cool-season crops can go in from around Jan 22; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 19 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 28 — 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 Trinidad
Closest first, within ~10 miles of Trinidad. Listing isn't leaking, and distance isn't exposure.
- WEST CEDAR CREEK MUDPFAS · 0.7 mi
- CITY OF TRINIDADPFAS · 0.7 mi
- REFUGE GENERAL STOREUnderground Storage Tanks · 1.4 mi
- BIG BS SHELLUnderground Storage Tanks · 1.5 mi
- LOVERYS GROCERYUnderground Storage Tanks · 1.7 mi
- TRINIDAD ISDUnderground Storage Tanks · 1.9 mi
- TRINIDAD STEAM ELECTRIC STATIONUnderground Storage Tanks · 2.3 mi
- TRINIDAD STEAM ELECTRIC STATIONBrownfields · 2.3 mi
- TRINIDAD PLANTBrownfields · 2.6 mi
- REFUGE DAIRYCAFO · 2.9 mi
- LT-33-56-509Nitrate · 3.6 mi
- STAR HARBOR MARINAUnderground Storage Tanks · 3.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Trinidad'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 Trinidad.
Total Sites
86
within ~10 miles of Trinidad
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Trinidad
Severity Distribution
within ~10 miles of Trinidad
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Trinidad, PFAS runs higher than the national average — 6 sites within ~10 miles of Trinidad. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Trinidad
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 Trinidad average
Your land is one point inside Trinidad
Everything above resolves to Trinidad as a whole — one PHZM band, read across 10K acres, with hard-freeze dates borrowed from Henderson 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 Trinidad Average
Trinidad Average
- ●USDA Zones 8b, averaged across Trinidad
- ●One soil character for all of Trinidad
- ●Frost dates read at Trinidad's scale: Feb 19 to Nov 28
YOUR Parcel
- ✓Your exact zone, not Trinidad's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Trinidad
Pull a site-specific report for your exact address in Trinidad, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Trinidad averages can't show:
We read public map data around Trinidad — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Trinidad average
How we know this about Trinidad
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 Henderson 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 Trinidad
When does frost risk typically end in Trinidad?
The last hard freeze (28°F) in Trinidad typically lands around Feb 19, 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 12.
When is the first frost in Trinidad?
The first hard freeze (28°F) in Trinidad typically arrives around Nov 28, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 14, so the watching starts about Oct 29 — about 282 days after the spring freeze cleared.
How long is the growing season in Trinidad?
Measured between 28°F hard freezes, Trinidad sees about 282 frost-free days — roughly Feb 19 through Nov 28, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 12 to Nov 14, about 247 days.
Is the soil safe to grow vegetables in Trinidad?
The federal record around Trinidad is a meaningful one — 86 documented sites, mostly Underground Storage Tanks entries (48), the nearest PFAS record about 0.7 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 Trinidad?
From about Oct 29 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 Nov 28 (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 Nov 28. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Trinidad's scale — its 8b band and its 282-day season. Your yard writes its own version of Trinidad'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 Trinidad’s own scale
5 of the readings below were taken at Trinidad's own scale — the 9,538 acres it covers and 86 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Trinidad's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 86 documented contamination sites on the federal record near Trinidad, the closest PFAS record about 0.7 miles out from the town centreFederal environmental registers
- Trinidad's boundary and the 9,538 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~282-day seasonGrowable Ground crop-matching engine
- The ecoregion at Trinidad's own centroid, the East Central Texas PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Trinidad has no normal of its own, so its county's is the closest measured readfrom Henderson County
- Soil character — no town-scale survey exists, so Trinidad's 9,538 acres read through its county's SSURGO summaryfrom Henderson County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Henderson County
- The growing challenges every Texas grower plans around — written at state scale, so they stay on the state guidefrom Texas
- Butterfly and beetle records, and the farmland pesticide estimate — all published county-widefrom Henderson County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Trinidad's 9,538 acreswhy one lot differs from the next →
- Which side of Trinidad you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 9,538 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest PFAS record about 0.7 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 Trinidad-wide figureread your own land →
More in Texas
Wider growing context
What grows across TexasTrinidad sits outside our named growing regions, so Texas as a whole is its closest context here.
Nearby growing guides