Roby, Texas, sits in USDA hardiness zone 8a — a zone band wide enough that plant choice, not possibility, is the interesting question.
Reliable performers under these conditions include cabbage, fig, california poppy, and collard greens; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Roby, 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 Roby 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 Roby — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Roby — the short answer
Roby, Texas: USDA zone 8a, about 258 days between hard freezes, across 460 acres of city.
- USDA zone
- 8a
- USDA PHZM 2023
- Last hard freeze (28°F)
- Mar 8
- NOAA 1991–2020 Climate Normals, 28°F — this town
- First hard freeze (28°F)
- Nov 21
- NOAA 1991–2020 Climate Normals, 28°F — this town
- Days between freezes
- ~258
- NOAA 1991–2020 Climate Normals, 28°F — this town
- City area
- 460 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 Roby's average, not your lot's — a low corner or a tree line moves it. Against Roby's 258-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Roby
Each reading below is measured for Roby itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
MeasuredRoby runs about 258 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
MeasuredRoby 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 Roby is in
Roby sits in the Central Great Plains — EPA Level III, inside the wider Great Plains. That is read at Roby's own centroid rather than borrowed from Fisher County.
What Grows in Roby
Every plant below cleared Roby's own zone 8a and its 258-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Roby?
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 8; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Mar 8 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Nov 21 — 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 Roby
Closest first, within ~10 miles of Roby. Listing isn't leaking, and distance isn't exposure.
- FORMER PIONEER OILUnderground Storage Tanks · 600 ft
- STEWARTS STATIONUnderground Storage Tanks · 650 ft
- LONGWORTH COOP GINUnderground Storage Tanks · 650 ft
- YESWAY 1068Underground Storage Tanks · 950 ft
- MIDWEST ELECTRICUnderground Storage Tanks · 950 ft
- FISHER COUNTY FARM SUPPLYUnderground Storage Tanks · 1200 ft
- EM CITGOUnderground Storage Tanks · 0.7 mi
- SDHPTUnderground Storage Tanks · 1.3 mi
- PRECINCT 1 COUNTY BARNUnderground Storage Tanks · 1.3 mi
- ROBY TX RCLUnderground Storage Tanks · 1.3 mi
- BRAZOS TRANSPORTUnderground Storage Tanks · 1.3 mi
- HOGSETT CHEVROLET GASUnderground Storage Tanks · 1.3 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Roby'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 Roby.
Total Sites
40
within ~10 miles of Roby
Risk Level
Low
Highest-severity
1 Toxics Release Inventory facility
Sources Checked
within ~10 miles of Roby
Severity Distribution
within ~10 miles of Roby
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Roby, Underground Storage Tanks runs higher than the national average — 38 sites within ~10 miles of Roby. It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around 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 Roby
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 Roby average
Your land is one point inside Roby
Everything above resolves to Roby as a whole — one PHZM band and one 28°F frost record, read across 460 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 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 Roby Average
Roby Average
- ●USDA Zones 8a, averaged across Roby
- ●One soil character for all of Roby
- ●Frost dates read at Roby's scale: Mar 8 to Nov 21
YOUR Parcel
- ✓Your exact zone, not Roby's 8a
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Roby
Pull a site-specific report for your exact address in Roby, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Roby averages can't show:
We read public map data around Roby — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Roby average
How we know this about Roby
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 Roby’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 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 Roby
When does frost risk typically end in Roby?
The last hard freeze (28°F) in Roby typically lands around Mar 8, 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 29.
When is the first frost in Roby?
The first hard freeze (28°F) in Roby typically arrives around Nov 21, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 7, so the watching starts about Oct 22 — about 258 days after the spring freeze cleared.
How long is the growing season in Roby?
Measured between 28°F hard freezes, Roby sees about 258 frost-free days — roughly Mar 8 through Nov 21, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 29 to Nov 7, about 223 days.
Is the soil safe to grow vegetables in Roby?
The federal record around Roby is light — 40 documented sites across the 9 federal source types we checked, mostly Underground Storage Tanks entries (38), the nearest Underground Storage Tanks record about 0.1 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 Roby?
From about Oct 22 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 21 (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 21. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Roby's scale — its 8a band and its 258-day season. Your yard writes its own version of Roby'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 Roby’s own scale
6 of the readings below were taken at Roby's own scale — its own ~258-day season between 28°F freezes, the 460 acres it covers and 40 documented sites around it; 4 are borrowed from a wider read, named and linked below.
Measured here
- Roby's own USDA hardiness band, zones 8aUSDA PHZM 2023
- Roby's own 28°F hard-freeze dates, about Mar 8 and Nov 21 and the ~258-day span between themNOAA 1991–2020 Climate Normals
- 40 documented contamination sites on the federal record near Roby, the closest Underground Storage Tanks record about 0.1 miles out from the town centreFederal environmental registers
- Roby's boundary and the 460 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8a and a ~258-day seasonGrowable Ground crop-matching engine
- The ecoregion at Roby's own centroid, the Central Great PlainsUS EPA Level III Ecoregions
Inherited from a wider read
- Soil character — no town-scale survey exists, so Roby's 460 acres read through its county's SSURGO summaryfrom Fisher County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Fisher 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 Fisher County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Roby's 460 acreswhy one lot differs from the next →
- Which side of Roby you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 460 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.1 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 Roby-wide figureread your own land →
More in Texas
Wider growing context
What grows across TexasRoby sits outside our named growing regions, so Texas as a whole is its closest context here.
Nearby growing guides