Throckmorton, Texas, sits in USDA hardiness zone 8a — enough range to grow cool-season vegetables, hardy fruit, and warm-season crops that mature before the first hard frost.
A short list that earns its place here — cabbage, fig, california poppy, and collard greens — with any one site's soil, sun, and drainage making the final cut.
Even in Throckmorton, 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 Throckmorton 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 Throckmorton — soil, climate, flood, and parcel records. How we handle your address.
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Throckmorton — the short answer
Throckmorton, Texas: USDA zone 8a, about 253 days between hard freezes, across 1K acres of town.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 12
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 20
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~253
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Town area
- 1K 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 8a is Throckmorton's average, not your lot's — a low corner or a tree line moves it. Against Throckmorton's 253-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Throckmorton
Each reading below is measured for Throckmorton itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredThrockmorton runs about 253 days between hard freezes — a long growing season.
There is slack for succession plantings and slow-finishing crops: many vegetables can be sown twice, and the heat-lovers have time to ripen fully.
Plan a second sowing of quick crops after the first comes out, and use the fall window most gardeners let sit idle.
NOAA 1991–2020 Climate Normals
Winter hardiness
MeasuredThrockmorton 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 Throckmorton is in
Throckmorton sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Throckmorton's own centroid rather than borrowed from Throckmorton County.
What Grows in Throckmorton
Every plant below cleared Throckmorton's own zone 8a and its 253-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Throckmorton?
Almost never — the real question is what to plant next. Cool-season crops can go in from around Feb 12; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 12 (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 season winds down slowly: late sowings, a real autumn harvest, and garlic in the ground before the first hard freeze.
What's on the federal record near Throckmorton
Closest first, within ~10 miles of Throckmorton. Listing isn't leaking, and distance isn't exposure.
- THROCKMORTON ISDUnderground Storage Tanks · 250 ft
- CLINTS 2Underground Storage Tanks · 950 ft
- THROCKMORTON MILL & ELEVUnderground Storage Tanks · 1000 ft
- ALLSUPS 221Underground Storage Tanks · 1600 ft
- SCARLETT BUTANEUnderground Storage Tanks · 1800 ft
- TEXAS DEPARTMENT OF TRANSPORTATIONUnderground Storage Tanks · 0.7 mi
- AZLE COMMUNICATIONUnderground Storage Tanks · 1.9 mi
- WOODSON TEXACOUnderground Storage Tanks · 1.9 mi
- DAVIS FINAUnderground Storage Tanks · 1.9 mi
- WOODSON ISDUnderground Storage Tanks · 1.9 mi
- ELBERT FARM STOREUnderground Storage Tanks · 1.9 mi
- CLIFTON MALEYUnderground Storage Tanks · 1.9 mi
1 more site is on the record inside the same radius. See them on the map
Measured from Throckmorton'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 Throckmorton.
Total Sites
13
within ~10 miles of Throckmorton
Risk Level
Low
Highest-severity
13 underground storage tanks
Severity Distribution
within ~10 miles of Throckmorton
Highest-Severity Sites
Know Before You Grow
- •Underground tanks leak petroleum as they age — near a former filling station, test the soil.
Check your specific parcel in Throckmorton
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 Throckmorton average
Your land is one point inside Throckmorton
Everything above resolves to Throckmorton as a whole — one PHZM band and one 28°F frost record, read across 1K 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 Throckmorton Average
Throckmorton Average
- ●USDA Zones 8a, averaged across Throckmorton
- ●One soil character for all of Throckmorton
- ●Frost dates read at Throckmorton's scale: Mar 12 to Nov 20
YOUR Parcel
- ✓Your exact zone, not Throckmorton's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Throckmorton
Pull a site-specific report for your exact address in Throckmorton, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Throckmorton averages can't show:
We read public map data around Throckmorton — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Throckmorton average
How we know this about Throckmorton
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 Throckmorton’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 Throckmorton
When does frost risk typically end in Throckmorton?
The last hard freeze (28°F) in Throckmorton typically lands around Mar 12, 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 Apr 2.
When is the first frost in Throckmorton?
The first hard freeze (28°F) in Throckmorton 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 253 days after the spring freeze cleared.
How long is the growing season in Throckmorton?
Measured between 28°F hard freezes, Throckmorton sees about 253 frost-free days — roughly Mar 12 through Nov 20, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Apr 2 to Nov 6, about 218 days.
Is the soil safe to grow vegetables in Throckmorton?
The federal record around Throckmorton is light — 13 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (13), the nearest Underground Storage Tanks record under a tenth of a mile 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 Throckmorton?
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 Throckmorton's scale — its 8a band and its 253-day season. Your yard writes its own version of Throckmorton'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 Throckmorton’s own scale
6 of the readings below were taken at Throckmorton's own scale — its own ~253-day season between 28°F freezes, the 1,064 acres it covers and 13 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Throckmorton's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Throckmorton's own 28°F hard-freeze dates, about Mar 12 and Nov 20 and the ~253-day span between themNOAA 1991–2020 Climate Normals
- 13 documented contamination sites on the federal record near Throckmorton, the closest Underground Storage Tanks record under a tenth of a mile out from the town centreFederal environmental registers
- Throckmorton's boundary and the 1,064 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~253-day seasonGrowable Ground crop-matching engine
- The ecoregion at Throckmorton's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Throckmorton's 1,064 acres read through its county's SSURGO summaryfrom Throckmorton County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Throckmorton 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 Throckmorton County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Throckmorton's 1,064 acreswhy one lot differs from the next →
- Which side of Throckmorton you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,064 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record under a tenth of a mile 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 Throckmorton-wide figureread your own land →
More in Texas
Wider growing context
What grows across TexasThrockmorton sits outside our named growing regions, so Texas as a whole is its closest context here.