Colleyville, Texas, sits in USDA hardiness zone 8b — a range where zone-matched perennials and frost-aware annual timing set what succeeds.
Crops well matched to these conditions include cabbage, fig, california poppy, and collard greens — though what thrives on any one site still turns on its specific soil, sun, and drainage.
Even in Colleyville, 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 Colleyville 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 Colleyville — soil, climate, flood, and parcel records. How we handle your address.
No card required · your full report in seconds
Colleyville — the short answer
Colleyville, Texas: USDA zone 8b, about 292 days between hard freezes, across 8K acres of city.
- USDA zone
- 8b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 14
- Tarrant County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 3
- Tarrant County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~292
- Tarrant County normal — NOAA 1991–2020, nearest to this town
- City area
- 8K 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 Tarrant County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 8b is Colleyville's average, not your lot's — a low corner or a tree line moves it. Against Colleyville's 292-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Colleyville
Each reading below is measured for Colleyville itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsColleyville runs about 292 days between hard freezes (read from Tarrant County, the closest normal to Colleyville) — 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
MeasuredColleyville 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 Colleyville is in
Colleyville sits in the Cross Timbers — EPA Level III, inside the wider Great Plains. That is read at Colleyville's own centroid rather than borrowed from Tarrant County.
What Grows in Colleyville
Every plant below cleared Colleyville's own zone 8b and its 292-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Colleyville?
Rarely: the season closes in stages, not all at once, and each stage has its crops. Cool-season crops can go in from around Jan 17; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 14 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 3 — 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.
What's on the federal record near Colleyville
Closest first, within ~10 miles of Colleyville. Listing isn't leaking, and distance isn't exposure.
- CITY OF COLLEYVILLEPFAS · 25 ft
- BLUEBONNET HILLS MEMORIAL PARKUnderground Storage Tanks · 1100 ft
- COLLEYVILLE SERVICE CTRUnderground Storage Tanks · 2200 ft
- ETHRIDGE AUTOUnderground Storage Tanks · 2400 ft
- D B COUCHUnderground Storage Tanks · 0.6 mi
- LUCKYS QUICK STOPUnderground Storage Tanks · 0.7 mi
- WALMART NEIGHBORHOOD MARKET #5614Brownfields · 0.7 mi
- NATIONAL AUTOTECH/DBA CITY GARAGEBrownfields · 0.8 mi
- COLLEYVILLE POLICE DEPTUnderground Storage Tanks · 0.8 mi
- EXXON RAS 65526Underground Storage Tanks · 0.9 mi
- COLLEYVILLE SULFURIC ACID SPILLSuperfund · 0.9 mi
- C-M INDUSTRIESUnderground Storage Tanks · 1.2 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Colleyville'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 Colleyville.
Total Sites
1,687
within ~10 miles of Colleyville
Risk Level
High
Highest-severity
9 Superfund sites (none NPL-listed)
Sources Checked
within ~10 miles of Colleyville
Severity Distribution
within ~10 miles of Colleyville
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Colleyville, two things run higher than the national average within ~10 miles of Colleyville — Toxics Release Inventory (128 sites) and PFAS (17 sites). It's not cause for alarm — it's worth knowing, and there's a sensible way to grow around it.
Toxics Release Inventory: TRI facilities report annual chemical releases to air, water, and land.
PFAS: PFAS (per- and polyfluoroalkyl substances) are called "forever chemicals" because they do not biodegrade.
Check prevailing wind direction — downwind parcels face higher exposure than upwind or crosswind locations.
Test irrigation water source — this is the primary pathway for PFAS to reach garden crops.
Check your specific parcel in Colleyville
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 Colleyville average
Your land is one point inside Colleyville
Everything above resolves to Colleyville as a whole — one PHZM band, read across 8K acres, with hard-freeze dates borrowed from Tarrant 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 Colleyville Average
Colleyville Average
- ●USDA Zones 8b, averaged across Colleyville
- ●One soil character for all of Colleyville
- ●Frost dates read at Colleyville's scale: Feb 14 to Dec 3
YOUR Parcel
- ✓Your exact zone, not Colleyville's 8b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Colleyville
Pull a site-specific report for your exact address in Colleyville, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Colleyville averages can't show:
We read public map data around Colleyville — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Colleyville average
How we know this about Colleyville
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 Tarrant 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 Colleyville
When does frost risk typically end in Colleyville?
The last hard freeze (28°F) in Colleyville typically lands around Feb 14, 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 7.
When is the first frost in Colleyville?
The first hard freeze (28°F) in Colleyville typically arrives around Dec 3, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 19, so the watching starts about Nov 3 — about 292 days after the spring freeze cleared.
How long is the growing season in Colleyville?
Measured between 28°F hard freezes, Colleyville sees about 292 frost-free days — roughly Feb 14 through Dec 3, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Mar 7 to Nov 19, about 257 days.
Is the soil safe to grow vegetables in Colleyville?
The federal record around Colleyville runs heavier than most — 1,687 documented sites, mostly Underground Storage Tanks entries (1,064), the nearest PFAS record under a tenth of a mile out — so test the soil before planting food in the ground, and raised beds with clean imported soil grow well in the meantime. Even here, proximity to a documented site is information, not a diagnosis of any one yard; the contamination map shows exactly what's recorded and where.
How do I protect my plants from frost in Colleyville?
From about Nov 3 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 3 (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 3. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Colleyville's scale — its 8b band and its 292-day season. Your yard writes its own version of Colleyville'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 Colleyville’s own scale
5 of the readings below were taken at Colleyville's own scale — the 8,396 acres it covers and 1,687 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Colleyville's own USDA hardiness band, zones 8bUSDA PHZM 2023
- 1,687 documented contamination sites on the federal record near Colleyville, the closest PFAS record under a tenth of a mile out from the town centreFederal environmental registers
- Colleyville's boundary and the 8,396 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 8b and a ~292-day seasonGrowable Ground crop-matching engine
- The ecoregion at Colleyville's own centroid, the Cross TimbersUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Colleyville has no normal of its own, so its county's is the closest measured readfrom Tarrant County
- Soil character — no town-scale survey exists, so Colleyville's 8,396 acres read through its county's SSURGO summaryfrom Tarrant County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Tarrant 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 Tarrant County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Colleyville's 8,396 acreswhy one lot differs from the next →
- Which side of Colleyville you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 8,396 acresreading your own microclimate →
- How close that record sits to YOUR lot — the closest PFAS 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 Colleyville-wide figureread your own land →
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