Thunderbird Bay, Texas, sits in USDA hardiness zone 8a — room for a real mix of vegetables, fruit, and perennials matched to the local frost calendar.
Among the crops suited to this profile: cabbage, fig, california poppy, and collard greens. The site-level story — soil, sun, drainage — decides the rest.
Even in Thunderbird Bay, 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 Thunderbird Bay 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 Thunderbird Bay — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Thunderbird Bay — the short answer
Thunderbird Bay, Texas: USDA zone 8a, about 262 days between hard freezes, across 2K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 3
- Brown County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Nov 20
- Brown County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~262
- Brown County normal — NOAA 1991–2020, nearest to this town
- Town 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 Brown County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8a is Thunderbird Bay's average, not your lot's — a low corner or a tree line moves it. Against Thunderbird Bay's 262-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Thunderbird Bay
Each reading below is measured for Thunderbird Bay itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsThunderbird Bay runs about 262 days between hard freezes (read from Brown County, the closest normal to Thunderbird Bay) — 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
MeasuredThunderbird Bay sits in USDA hardiness zone 8a.
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 Thunderbird Bay is in
Thunderbird Bay sits in the Cross Timbers — EPA Level III, inside the wider Great Plains. That is read at Thunderbird Bay's own centroid rather than borrowed from Brown County.
What Grows in Thunderbird Bay
Every plant below cleared Thunderbird Bay's own zone 8a and its 262-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Thunderbird Bay?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Feb 3; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 3 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 20 — 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 Thunderbird Bay
Closest first, within ~10 miles of Thunderbird Bay. Listing isn't leaking, and distance isn't exposure.
- DUDLEYS COUNTRY STOREUnderground Storage Tanks · 4.1 mi
- LAKEHAVEN MARINAUnderground Storage Tanks · 5.0 mi
- EZ MART 4303Underground Storage Tanks · 6.9 mi
- J & H STATIONUnderground Storage Tanks · 7.6 mi
- LAKEWAY VILLAGE AND GROCERYUnderground Storage Tanks · 8.0 mi
- BROWNWOOD MUNICIPAL AIRPORTUnderground Storage Tanks · 8.9 mi
- ROBERSON RENTALUnderground Storage Tanks · 9.4 mi
- E & L SELF SERVEUnderground Storage Tanks · 9.4 mi
- TXF PRODUCTSUnderground Storage Tanks · 9.4 mi
- COMMISSIONER PCT 2 BARNUnderground Storage Tanks · 9.4 mi
- SALAZAR SERVICE STATIONUnderground Storage Tanks · 9.4 mi
- LAKE BROWNWOOD STATE PARKUnderground Storage Tanks · 9.4 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Thunderbird Bay'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 Thunderbird Bay.
Total Sites
49
within ~10 miles of Thunderbird Bay
Risk Level
Low
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Thunderbird Bay
Severity Distribution
within ~10 miles of Thunderbird Bay
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Thunderbird Bay, Underground Storage Tanks runs higher than the national average — 46 sites within ~10 miles of Thunderbird Bay. That's not a problem with your land — it's information about it.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Thunderbird Bay
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 Thunderbird Bay average
Your land is one point inside Thunderbird Bay
Everything above resolves to Thunderbird Bay as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Brown County’s record because no 30-year normal resolves at this town’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 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 Thunderbird Bay Average
Thunderbird Bay Average
- ●USDA Zones 8a, averaged across Thunderbird Bay
- ●One soil character for all of Thunderbird Bay
- ●Frost dates read at Thunderbird Bay's scale: Mar 3 to Nov 20
YOUR Parcel
- ✓Your exact zone, not Thunderbird Bay's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Thunderbird Bay
Pull a site-specific report for your exact address in Thunderbird Bay, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Thunderbird Bay averages can't show:
We read public map data around Thunderbird Bay — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Thunderbird Bay average
How we know this about Thunderbird Bay
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 Brown 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 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 Thunderbird Bay
When does frost risk typically end in Thunderbird Bay?
The last hard freeze (28°F) in Thunderbird Bay typically lands around Mar 3, 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 24.
When is the first frost in Thunderbird Bay?
The first hard freeze (28°F) in Thunderbird Bay typically arrives around Nov 20, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 6, so the watching starts about Oct 21 — about 262 days after the spring freeze cleared.
How long is the growing season in Thunderbird Bay?
Measured between 28°F hard freezes, Thunderbird Bay sees about 262 frost-free days — roughly Mar 3 through Nov 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 24 to Nov 6, about 227 days.
Is the soil safe to grow vegetables in Thunderbird Bay?
The federal record around Thunderbird Bay is light — 49 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (46), the nearest Underground Storage Tanks record about 4.1 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 Thunderbird Bay?
From about Oct 21 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 20 (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 20. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Thunderbird Bay's scale — its 8a band and its 262-day season. Your yard writes its own version of Thunderbird Bay'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 Thunderbird Bay’s own scale
5 of the readings below were taken at Thunderbird Bay's own scale — the 1,627 acres it covers and 49 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Thunderbird Bay's own USDA hardiness band, zones 8aUSDA PHZM 2023
- 49 documented contamination sites on the federal record near Thunderbird Bay, the closest Underground Storage Tanks record about 4.1 miles out from the town centreFederal environmental registers
- Thunderbird Bay's boundary and the 1,627 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~262-day seasonGrowable Ground crop-matching engine
- The ecoregion at Thunderbird Bay's own centroid, the Cross TimbersUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Thunderbird Bay has no normal of its own, so its county's is the closest measured readfrom Brown County
- Soil character — no town-scale survey exists, so Thunderbird Bay's 1,627 acres read through its county's SSURGO summaryfrom Brown County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Brown 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 Brown County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Thunderbird Bay's 1,627 acreswhy one lot differs from the next →
- Which side of Thunderbird Bay you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,627 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 4.1 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 Thunderbird Bay-wide figureread your own land →
More in Texas
Wider growing context
What grows across TexasThunderbird Bay sits outside our named growing regions, so Texas as a whole is its closest context here.
Nearby growing guides