What Grows in Llano Grande, Texas

USDA Zones 10a · 1K acres

Llano Grande, Texas, sits in USDA hardiness zone 10a — a zone band wide enough that plant choice, not possibility, is the interesting question.

Among the crops suited to this profile: okra, meyer lemon, california poppy, and artichoke. The site-level story — soil, sun, drainage — decides the rest.

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Even in Llano Grande, 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 Llano Grande 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 Llano Grande — soil, climate, flood, and parcel records. How we handle your address.

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Llano Grande — the short answer

Llano Grande, Texas: USDA zone 10a, about 341 days between hard freezes, across 1K acres of town.

USDA zone
10a
USDA PHZM 2023
Last hard freeze (28°F)
Jan 16
Hidalgo County normal — NOAA 1991–2020, nearest to this town
First hard freeze (28°F)
Dec 23
Hidalgo County normal — NOAA 1991–2020, nearest to this town
Days between freezes
~341
Hidalgo County normal — NOAA 1991–2020, nearest to this town
Town area
1K 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 Hidalgo County’s — the closest measured record, labelled as such rather than passed off as local.

Hardiness Zone Range

10a10a
3a (Cold)13b (Hot)

Zone 10a is Llano Grande's average, not your lot's — a low corner or a tree line moves it. Against Llano Grande's 341-day season, see what your own ground reads.

Soil varies lot by lot — soil types explained.

What this means for growing in Llano Grande

Each reading below is measured for Llano Grande itself — here is what it means for a garden here, and the move an experienced grower makes about it.

Season length

From county records

Llano Grande runs about 341 days between hard freezes (read from Hidalgo County, the closest normal to Llano Grande) — 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

Measured

Llano Grande sits in USDA hardiness zone 10a.

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 Llano Grande is in

Llano Grande sits in the Western Gulf Coastal Plain — EPA Level III, inside the wider Great Plains. That is read at Llano Grande's own centroid rather than borrowed from Hidalgo County.

What that means for soil

What Grows in Llano Grande

Every plant below cleared Llano Grande's own zone 10a and its 341-day season. Each card opens that plant's Texas profile. How we score.

okra, photograph
Growing okra in TexasZones 2–12Llano Grande's 341 days clear the ~50 it needs.
Meyer lemon, photograph
Texas meyer lemon guideZones 9–11Llano Grande's 10a — 1 zone of cold margin.
California poppy, photograph
California poppy in TexasZones 6–10Llano Grande's 10a — 4 zones of cold margin.
artichoke, photograph
Artichoke: Texas growing notesZones 7–11Llano Grande's 10a — 3 zones of cold margin.
avocado, photograph
Growing avocado in TexasZones 9–11Llano Grande's 10a — 1 zone of cold margin.
basil, photograph
Texas basil guideZones 10–11Llano Grande's 341 days clear the ~80 it needs.
cabbage, photograph
Cabbage in TexasZones 2–11Llano Grande's 10a — 8 zones of cold margin.
banana, photograph
Banana: Texas growing notesZones 9–11Llano Grande's 10a — 1 zone of cold margin.
rosemary, photograph
Growing rosemary in TexasZones 8–10Llano Grande's 10a — 2 zones of cold margin.
collard greens, photograph
Texas collard greens guideZones 2–11Llano Grande's 10a — 8 zones of cold margin.
citrus, photograph
Citrus in TexasZones 9–11Llano Grande's 10a — 1 zone of cold margin.
kale, photograph
Kale: Texas growing notesZones 2–11Llano Grande's 10a — 8 zones of cold margin.
lentil, photograph
Growing lentil in TexasZones 2–11Llano Grande's 341 days clear the ~70 it needs.
potato, photograph
Texas potato guideZones 2–11Llano Grande's 10a — 8 zones of cold margin.
pumpkin, photograph
Pumpkin in TexasZones 3–11Llano Grande's 341 days clear the ~40 it needs.
iris, photograph
Iris: Texas growing notesZones 3–10Llano Grande's 10a — 7 zones of cold margin.
sunflower, photograph
Growing sunflower in TexasZones 2–11Llano Grande's 341 days clear the ~70 it needs.
Apache plume, photograph
Texas apache plume guideZones 5–11Llano Grande's 10a — 5 zones of cold margin.
bougainvillea, photograph
Bougainvillea in TexasZones 9–11Llano Grande's 10a — 1 zone of cold margin.
lantana, photograph
Lantana: Texas growing notesZones 10–11Llano Grande's 10a is its exact cold limit.
French marigold, photograph
Growing french marigold in TexasLlano Grande's 341 days clear the ~50 it needs.
holly, photograph
Texas holly guideZones 5–11Llano Grande's 10a — 5 zones of cold margin.
jasmine, photograph
Jasmine in TexasZones 9–11Llano Grande's 10a — 1 zone of cold margin.
mountain laurel, photograph
Mountain laurel: Texas growing notesZones 5–11Llano Grande's 10a — 5 zones of cold margin.
moringa, photograph
Growing moringa in TexasZones 9–12Llano Grande's 10a — 1 zone of cold margin.
African foxtail, photograph
Texas african foxtail guideZones 8–13Llano Grande's 341 days clear the ~120 it needs.
ajuga, photograph
Ajuga in TexasZones 5–11Llano Grande's 10a — 5 zones of cold margin.
palo verde, photograph
Palo verde: Texas growing notesZones 8–11Llano Grande's 10a — 2 zones of cold margin.
Vuda blue grass, photograph
Growing vuda blue grass in TexasZones 8–13Llano Grande's 10a — 2 zones of cold margin.
liriope, photograph
Texas liriope guideZones 5–11Llano Grande's 10a — 5 zones of cold margin.

Is it too late to plant in Llano Grande?

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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 16 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 23 — long-season crops need about 90 days of runway, quick greens only 30. And with a calendar this mild, the honest answer is that planting barely stops — winter opens seasons colder regions never see.

What's on the federal record near Llano Grande

Closest first, within ~10 miles of Llano Grande. Listing isn't leaking, and distance isn't exposure.

  1. RODRIGUEZ BEST PIC & MEATSUnderground Storage Tanks · 2300 ft
  2. TEXAS DEPARTMENT OF PUBLIC SAFETY - WESLACOUnderground Storage Tanks · 0.7 mi
  3. USDA AGRICULTURAL RESEARCH SVCUnderground Storage Tanks · 0.8 mi
  4. 3M MEAT MARKETUnderground Storage Tanks · 0.8 mi
  5. SALDANASUnderground Storage Tanks · 1.0 mi
  6. PIONEER OVERSEASUnderground Storage Tanks · 1.1 mi
  7. GENERAL TELEPHONE OF THE SWUnderground Storage Tanks · 1.4 mi
  8. KNAPP MEDICAL CENTERUnderground Storage Tanks · 1.6 mi
  9. WESLACO BULK PLANTUnderground Storage Tanks · 1.6 mi
  10. 7-ELEVEN STORE 40721Underground Storage Tanks · 1.7 mi
  11. 7-ELEVEN STORE 40714Underground Storage Tanks · 1.7 mi
  12. LRGVDC TRANSPORTATION & MAINTENANCEUnderground Storage Tanks · 1.8 mi

6 more sites are on the record inside the same radius. See them on the map

Measured from Llano Grande'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 Llano Grande.

Total Sites

265

within ~10 miles of Llano Grande

Risk Level

Elevated

Highest-severity

3 Superfund sites

Severity Distribution

within ~10 miles of Llano Grande

High9Moderate100Low156

Highest-Severity Sites

City of Alamo
PFAS Sampling · PFAS Detected
City of Donna
PFAS Sampling · PFAS Detected
City of Mercedes
PFAS Sampling · PFAS Detected
City of Weslaco
PFAS Sampling · PFAS Detected
Donna Reservoir and Canal System
Superfund · Superfund NPL

A note from Gnorman

What an experienced grower watches for around here

In and around Llano Grande, two things run higher than the national average within ~10 miles of Llano Grande — PFAS (8 sites) and Underground Storage Tanks (214 sites). Knowing it is half the work — and it's nothing a thoughtful grower can't plan for.

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.

Free Report

Check your specific parcel in Llano Grande

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 Llano Grande average

Your land is one point inside Llano Grande

Everything above resolves to Llano Grande as a whole — one PHZM band, read across 1K acres, with hard-freeze dates borrowed from Hidalgo 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 Llano Grande Average

Llano Grande Average

  • USDA Zones 10a, averaged across Llano Grande
  • One soil character for all of Llano Grande
  • Frost dates read at Llano Grande's scale: Jan 16 to Dec 23

YOUR Parcel

  • Your exact zone, not Llano Grande's 10a
  • Your SSURGO soil type & pH
  • Your sun exposure, cast in 3D

See MY Growing Report

Free Report

Read your specific parcel in Llano Grande

Pull a site-specific report for your exact address in Llano Grande, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.

Three things about your lot that Llano Grande averages can't show:

Your soil pHYour frost-free days — Llano Grande averages 341Your sun & shade

We read public map data around Llano Grande — soil, climate, flood, and parcel records. How we handle your address.

25+ data sources read at your address, not the Llano Grande average

How we know this about Llano Grande

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 Hidalgo 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 Llano Grande

When does frost risk typically end in Llano Grande?

The last hard freeze (28°F) in Llano Grande typically lands around Jan 16, 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 Feb 6.

When is the first frost in Llano Grande?

The first hard freeze (28°F) in Llano Grande typically arrives around Dec 23, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Dec 9, so the watching starts about Nov 23 — about 341 days after the spring freeze cleared.

How long is the growing season in Llano Grande?

Measured between 28°F hard freezes, Llano Grande sees about 341 frost-free days — roughly Jan 16 through Dec 23, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 6 to Dec 9, about 306 days.

Is the soil safe to grow vegetables in Llano Grande?

The federal record around Llano Grande is a meaningful one — 265 documented sites, mostly Underground Storage Tanks entries (214), the nearest Underground Storage Tanks record about 0.4 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 Llano Grande?

From about Nov 23 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 23 (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 23. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.

Everything above is measured at Llano Grande's scale — its 10a band and its 341-day season. Your yard writes its own version of Llano Grande'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 Llano Grande’s own scale

5 of the readings below were taken at Llano Grande's own scale — the 1,014 acres it covers and 265 documented sites around it; 5 are borrowed from a wider read, named and linked below.

Measured here

  • Llano Grande's own USDA hardiness band, zones 10aUSDA PHZM 2023
  • 265 documented contamination sites on the federal record near Llano Grande, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
  • Llano Grande's boundary and the 1,014 acres inside itUS Census TIGER/Line 2025
  • Which of 1,086 plants clear zones 10a and a ~341-day seasonGrowable Ground crop-matching engine
  • The ecoregion at Llano Grande's own centroid, the Western Gulf Coastal PlainUS EPA Level III Ecoregions

Inherited from a wider read

  • The 28°F hard-freeze dates — Llano Grande has no normal of its own, so its county's is the closest measured readfrom Hidalgo County
  • Soil character — no town-scale survey exists, so Llano Grande's 1,014 acres read through its county's SSURGO summaryfrom Hidalgo County
  • Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Hidalgo 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 Hidalgo County

What this page can’t tell you

  • The soil pH, drainage, sun hours, and frost pockets on any one lot among Llano Grande's 1,014 acreswhy one lot differs from the next
  • Which side of Llano Grande you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 1,014 acresreading your own microclimate
  • How close that record sits to YOUR lot — the closest Underground Storage Tanks record about 0.4 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 Llano Grande-wide figureread your own land
The next step finer is your own address