Steiner Ranch, Texas, sits in USDA hardiness zone 9a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include artichoke, fig, california poppy, and cabbage; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Steiner Ranch, 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 Steiner Ranch 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 Steiner Ranch — soil, climate, flood, and parcel records. How we handle your address.
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Steiner Ranch — the short answer
Steiner Ranch, Texas: USDA zone 9a, about 299 days between hard freezes, across 4K acres of town.
- USDA zone
- 9a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 9
- Travis County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 5
- Travis County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~299
- Travis County normal — NOAA 1991–2020, nearest to this town
- Town area
- 4K 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 Travis County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9a is Steiner Ranch's average, not your lot's — a low corner or a tree line moves it. Against Steiner Ranch's 299-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Steiner Ranch
Each reading below is measured for Steiner Ranch itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsSteiner Ranch runs about 299 days between hard freezes (read from Travis County, the closest normal to Steiner Ranch) — 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
MeasuredSteiner Ranch 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 Steiner Ranch is in
Steiner Ranch sits in the Edwards Plateau — EPA Level III, inside the wider Great Plains. That is read at Steiner Ranch's own centroid rather than borrowed from Travis County.
What Grows in Steiner Ranch
Every plant below cleared Steiner Ranch's own zone 9a and its 299-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Steiner Ranch?
For most of the year, no — what changes is which crops still fit the days remaining. Cool-season crops can go in from around Jan 12; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 9 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 5 — long-season crops need about 90 days of runway, quick greens only 30. With almost year-round growing weather, timing is about heat and rainfall more than frost — some bench is always in play.
Documented around Steiner Ranch
Survey cells within 31 miles of Steiner Ranch checked for spotted lanternfly, none carrying a detection — a surveyed negative, not an absence of looking. Nearest documented record 625 miles off. What to watch for.
What's on the federal record near Steiner Ranch
Closest first, within ~10 miles of Steiner Ranch. Listing isn't leaking, and distance isn't exposure.
- WAG-A-BAG 19Underground Storage Tanks · 1700 ft
- WESTSIDE SERVICE CENTERUnderground Storage Tanks · 1.5 mi
- LCRA MANSFIELD MARSHALL FORD DAMBrownfields · 1.6 mi
- MARSHALL FORD FOOD MARTUnderground Storage Tanks · 1.7 mi
- SELCOBrownfields · 1.8 mi
- SELCOToxics Release Inventory · 1.8 mi
- RANDALLS 2987Underground Storage Tanks · 1.8 mi
- JACK BROWN CLEANERS NO 24Brownfields · 1.8 mi
- COMMANDERS POINT YACHT BASINUnderground Storage Tanks · 2.5 mi
- MAVERICK MARKETUnderground Storage Tanks · 2.6 mi
- LAKEHILLS GROCERYUnderground Storage Tanks · 2.6 mi
- NEIGHBORHOOD CONVENIENCE STOREUnderground Storage Tanks · 2.8 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Steiner Ranch'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 Steiner Ranch.
Total Sites
538
within ~10 miles of Steiner Ranch
Risk Level
Elevated
Highest-severity
1 Superfund site (none NPL-listed)
Sources Checked
within ~10 miles of Steiner Ranch
Severity Distribution
within ~10 miles of Steiner Ranch
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Steiner Ranch, two things run higher than the national average within ~10 miles of Steiner Ranch — PFAS (7 sites) and Underground Storage Tanks (389 sites). 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.
Underground Storage Tanks: Underground storage tanks are the single most common source of soil contamination near homes and gardens.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Use raised beds with imported soil — this eliminates the primary soil-contact pathway.
Check your specific parcel in Steiner Ranch
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 Steiner Ranch average
Your land is one point inside Steiner Ranch
Everything above resolves to Steiner Ranch as a whole — one PHZM band, read across 4K acres, with hard-freeze dates borrowed from Travis 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 Steiner Ranch Average
Steiner Ranch Average
- ●USDA Zones 9a, averaged across Steiner Ranch
- ●One soil character for all of Steiner Ranch
- ●Frost dates read at Steiner Ranch's scale: Feb 9 to Dec 5
YOUR Parcel
- ✓Your exact zone, not Steiner Ranch's 9a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Steiner Ranch
Pull a site-specific report for your exact address in Steiner Ranch, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Steiner Ranch averages can't show:
We read public map data around Steiner Ranch — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Steiner Ranch average
How we know this about Steiner Ranch
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 Travis 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 Steiner Ranch
When does frost risk typically end in Steiner Ranch?
The last hard freeze (28°F) in Steiner Ranch typically lands around Feb 9, 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 2.
When is the first frost in Steiner Ranch?
The first hard freeze (28°F) in Steiner Ranch typically arrives around Dec 5, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 21, so the watching starts about Nov 5 — about 299 days after the spring freeze cleared.
How long is the growing season in Steiner Ranch?
Measured between 28°F hard freezes, Steiner Ranch sees about 299 frost-free days — roughly Feb 9 through Dec 5, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 2 to Nov 21, about 264 days.
Is the soil safe to grow vegetables in Steiner Ranch?
The federal record around Steiner Ranch is a meaningful one — 538 documented sites, mostly Underground Storage Tanks entries (389), the nearest Underground Storage Tanks record about 0.3 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 Steiner Ranch?
From about Nov 5 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 5 (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 5. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Steiner Ranch's scale — its 9a band and its 299-day season. Your yard writes its own version of Steiner Ranch'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 Steiner Ranch’s own scale
6 of the readings below were taken at Steiner Ranch's own scale — the 4,248 acres it covers and 538 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Steiner Ranch's own USDA hardiness band, zones 9aUSDA PHZM 2023
- 538 documented contamination sites on the federal record near Steiner Ranch, the closest Underground Storage Tanks record about 0.3 miles out from the town centreFederal environmental registers
- Steiner Ranch's boundary and the 4,248 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9a and a ~299-day seasonGrowable Ground crop-matching engine
- The ecoregion at Steiner Ranch's own centroid, the Edwards PlateauUS EPA Level III Ecoregions
- Lanternfly survey cells around Steiner Ranch checked, none carrying a detectionlydemapr (De Bona & Helmus), 10 km survey lattice
Inherited from a wider read
- The 28°F hard-freeze dates — Steiner Ranch has no normal of its own, so its county's is the closest measured readfrom Travis County
- Soil character — no town-scale survey exists, so Steiner Ranch's 4,248 acres read through its county's SSURGO summaryfrom Travis County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Travis 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 Travis County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Steiner Ranch's 4,248 acreswhy one lot differs from the next →
- Which side of Steiner Ranch you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 4,248 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.3 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 Steiner Ranch-wide figureread your own land →
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