What Grows in Coyanosa, Texas

USDA Zones 9a-10b · 138 acres

Coyanosa, Texas, sits in USDA hardiness zones 9a-10b — a zone band wide enough that plant choice, not possibility, is the interesting question.

On paper, pecan, tomato, okra, and bluebonnet all suit these conditions — on the ground, soil, sun, and drainage make the final call.

Score your parcel · free

Even in Coyanosa, 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 Coyanosa lot. Enter your address and we'll score 1,112 plants against your land's actual soil, sun, and frost.

We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.

No card required · your full report in seconds

Quick Facts

USDA Zones

9a-10b

Last Hard Freeze (28°F)

Jan 17

Town normal — light frosts run a few weeks later

First Hard Freeze (28°F)

Dec 24

Town normal — light frosts arrive a few weeks earlier

Town Area

138 acres

Hardiness Zone Range

9a
10b
3a (Cold)13b (Hot)

Zone maps are averages across Coyanosa. Your yard's slope, trees, and frost pockets shift what actually grows — see your land's exact reading.

Soil varies lot by lot — soil types explained.

Is it too late to plant in Coyanosa?

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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 17 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 24 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.

Growing Challenges in Texas

What an experienced grower plans around here — each one has a move.

Extreme heat (100F+ days) stresses many crops from June through September

Run the garden on spring and fall windows and give summer survivors afternoon shade — timing beats fighting the heat.

Rainfall varies dramatically — 8 inches in west TX to 56 inches in east TX

Your county's rainfall, not the state's, sets the watering plan — check your exact spot before designing beds.

Heavy black clay (Blackland Prairie) is difficult to work and drains poorly

A raised bed with amended soil turns Blackland clay from an obstacle into a backdrop — and that clay feeds deep roots well.

Flash drought conditions can develop rapidly even in wet years

Mulch deep and water deeply-but-rarely to grow drought-tough roots; a drip system pays for itself in the first dry summer.

For cultivar selection, pest pressure, and planting-time guidance specific to Texas, the Texas A&M AgriLife Extension Service is the authoritative local source.

Environmental Intelligence

Understanding what's nearby helps you make informed decisions about where and how to grow.

Total Sites

19

within ~10 miles of Coyanosa

Risk Level

Low

Highest-severity

8 Toxics Release Inventory facilities

Severity Distribution

within ~10 miles of Coyanosa

High0Moderate19Low0

Highest-Severity Sites

Caymus Plant
Toxics Release Inventory · 7973wcymsp35nfm
Coyanosa Fuel Center
Underground Storage Tanks · Open UST(S)
Coyanosa Gas Plant
Toxics Release Inventory · 79730cynsg4259m
Oahu Gas Plant
Toxics Release Inventory · 7974WHGSPLFRMTH
Sid Richardson
Toxics Release Inventory · 79730CYNSGPOBOX

Know Before You Grow

  • Test well water for nitrates if you rely on a private well. Levels above 10 mg/L require treatment.
  • TRI facilities report chemical releases. Check wind direction — downwind parcels face higher airborne exposure.
  • Underground tanks can leak petroleum products. Soil testing near former gas stations is recommended.
Free Report

Check your specific parcel in Coyanosa

Get exact proximity distances to contamination sources for your specific parcel — plus soil, sun, drainage, and 1,112 plant recommendations.

Three things about your exact spot that zone averages miss:

Your soil pHYour frost-free daysYour sun & shade

We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.

25+ data sources analyzed in seconds

Your Specific Parcel Matters

Coyanosa Average

  • USDA Zones 9a-10b
  • Generic soil type for the area
  • State-average frost dates

YOUR Parcel

  • Your exact hardiness zone
  • Your SSURGO soil type & pH
  • Your sun exposure, cast in 3D

See MY Growing Report

Free Report

Read your specific parcel in Coyanosa

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

Three things about your exact spot that zone averages miss:

Your soil pHYour frost-free daysYour sun & shade

We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.

25+ data sources analyzed in seconds

Key Growing Facts for Coyanosa, Texas

  • USDA Hardiness Zones: 9a-10b (USDA PHZM 2023)
  • Last Hard Freeze (28°F): Jan 17 (town normal, NOAA 1991–2020 Climate Normals — light frosts can follow for a few weeks)
  • First Hard Freeze (28°F): Dec 24 (town normal, NOAA 1991–2020 Climate Normals — light frosts can arrive a few weeks earlier)
  • Days Between Hard Freezes: ~341 (town normal, NOAA 1991–2020 Climate Normals)
  • Land Area: 138 acres (US Census TIGER 2025)

Zone data: USDA ARS Plant Hardiness Zone Map 2023. Climate data: NOAA NCEI. Boundaries: US Census TIGER/Line 2025.

Frequently Asked Questions

What hardiness zone is Coyanosa, Texas?

Coyanosa sits in USDA hardiness zones 9a-10b, per the USDA Plant Hardiness Zone Map 2023. Zones reflect average annual extreme minimum temperatures from 1991–2020 weather data.

Is it too late to plant in Coyanosa?

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 1; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Jan 17 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 24 — long-season crops need about 90 days of runway, quick greens only 30. Here the calendar nearly circles: cool-season crops take the winter shift, and the next window is always close.

When does frost risk typically end in Coyanosa?

The last hard freeze (28°F) in Coyanosa typically lands around Jan 17, per NOAA 1991–2020 climate normals — an earlier marker than the light-frost dates many planting charts quote. That marks the hard freeze, not the last light frost — light frosts can still bite for a few more weeks, so tender transplants usually wait another 2–3 weeks.

When is the first frost in Coyanosa?

The first hard freeze (28°F) in Coyanosa typically arrives around Dec 24, per NOAA 1991–2020 climate normals — the point most tender summer crops finish. Lighter frosts usually reach a couple of weeks earlier, so watch the forecast from late summer on and harvest or cover tender plants before the first cold night.

What vegetables grow in Coyanosa?

Coyanosa's zones 9a-10b support a wide range — strong performers include Pecan, Tomato, Okra, Bluebonnet, and Jalapeno. What actually takes on any one site comes down to its soil, sun, and drainage, and we score each plant against the real conditions at your address.

Which hardiness zone is Coyanosa, really?

Officially, Coyanosa sits in USDA zones 9a-10b (USDA PHZM 2023) — but a zone is a 30-year average of winter's coldest night across an area, and it can't see any one yard. A south-facing slope, a tree line, or a low frost pocket can shift a single site by half a zone either way, which is why neighboring gardeners often quote different numbers. We read the conditions at your exact address — soil, sun, slope, and frost — and score 1,112 plants against what's actually there.

Is the soil safe to grow vegetables in Coyanosa?

The federal record around Coyanosa is light — 19 documented sites across the 9 federal source types we checked — 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 Coyanosa?

As the season closes around the first 28°F hard freeze near Dec 24 (NOAA 1991–2020 climate normals), a few moves buy time: cover tender plants with floating row cover or an old sheet on still, clear nights, water the soil the afternoon before a freeze so it holds warmth overnight, and harvest frost-tender crops like tomatoes, peppers, and basil before the first hard night. Hardy greens and root crops shrug off light frost and often sweeten after it, so leave them in.

Everything on this page is a Coyanosa average. Your yard writes its own version — we read soil, sun, drainage, and frost at your exact address. Try it for 14 days — no card required.