Riviera, Texas, sits in USDA hardiness zone 9b — a band that supports both cool-season staples and warm-season crops chosen to fit the local frost window.
Reliable performers under these conditions include okra, meyer lemon, california poppy, and artichoke; what your own ground favors still comes down to its soil, sun, and drainage.
Even in Riviera, 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 Riviera 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 Riviera — soil, climate, flood, and parcel records. How we handle your address.
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Riviera — the short answer
Riviera, Texas: USDA zone 9b, about 316 days between hard freezes, across 2K acres of town.
- USDA zone
- 9b
- USDA PHZM 2023
- Last hard freeze (28°F)
- Feb 1
- Kleberg County normal — NOAA 1991–2020, nearest to this town
- First hard freeze (28°F)
- Dec 14
- Kleberg County normal — NOAA 1991–2020, nearest to this town
- Days between freezes
- ~316
- Kleberg County normal — NOAA 1991–2020, nearest to this town
- Town area
- 2K 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 Kleberg County’s — the closest measured record, labelled as such rather than passed off as local.
Hardiness Zone Range
Zone 9b is Riviera's average, not your lot's — a low corner or a tree line moves it. Against Riviera's 316-day season, see what your own ground reads.
Soil varies lot by lot — soil types explained.
What this means for growing in Riviera
Each reading below is measured for Riviera itself — here is what it means for a garden here, and the move an experienced grower makes about it.
Season length
From county recordsRiviera runs about 316 days between hard freezes (read from Kleberg County, the closest normal to Riviera) — 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
MeasuredRiviera sits in USDA hardiness zone 9b.
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 Riviera is in
Riviera sits in the Western Gulf Coastal Plain — EPA Level III, inside the wider Great Plains. That is read at Riviera's own centroid rather than borrowed from Kleberg County.
What Grows in Riviera
Every plant below cleared Riviera's own zone 9b and its 316-day season. Each card opens that plant's Texas profile. How we score.
Is it too late to plant in Riviera?
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 4; tender transplants wait until two to three weeks after the last 28°F hard freeze, which lands near Feb 1 (NOAA 1991–2020 climate normals); and from midsummer, planting counts back from the first fall freeze around Dec 14 — long-season crops need about 90 days of runway, quick greens only 30. In a climate this gentle, “too late” hardly applies — the question becomes which crops prefer the cooler months ahead.
What's on the federal record near Riviera
Closest first, within ~10 miles of Riviera. Listing isn't leaking, and distance isn't exposure.
- KLEBERG COUNTY PCT 3Underground Storage Tanks · 2300 ft
- RR-83-42-502Nitrate · 0.9 mi
- RR-83-42-803Nitrate · 0.9 mi
- SNAPPY FOODS 12Underground Storage Tanks · 1.0 mi
- STRIPES 2479Underground Storage Tanks · 1.0 mi
- 7-ELEVEN STORE 40814Underground Storage Tanks · 1.1 mi
- TETLP RIVIERA LINE 16-F MP 3.65Brownfields · 1.1 mi
- RR-83-42-507Nitrate · 2.2 mi
- NEELY WATER WELL SERVICEUnderground Storage Tanks · 2.3 mi
- RR-83-42-402Nitrate · 2.4 mi
- RR-83-42-504Nitrate · 2.6 mi
- RR-83-42-403Nitrate · 2.6 mi
6 more sites are on the record inside the same radius. See them on the map
Measured from Riviera'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 Riviera.
Sources Checked
within ~10 miles of Riviera
Severity Distribution
within ~10 miles of Riviera
Highest-Severity Sites
A note from Gnorman
What an experienced grower watches for around here
In and around Riviera, Nitrate runs higher than the national average — 56 sites within ~10 miles of Riviera. That's not a problem with your land — it's information about it.
Nitrate: Nitrate contamination primarily comes from agricultural fertilizer runoff and failing septic systems.
Test well water for nitrate if you rely on a private well for irrigation (EPA standard: 10 mg/L).
Check your specific parcel in Riviera
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 Riviera average
Your land is one point inside Riviera
Everything above resolves to Riviera as a whole — one PHZM band, read across 2K acres, with hard-freeze dates borrowed from Kleberg 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 Riviera Average
Riviera Average
- ●USDA Zones 9b, averaged across Riviera
- ●One soil character for all of Riviera
- ●Frost dates read at Riviera's scale: Feb 1 to Dec 14
YOUR Parcel
- ✓Your exact zone, not Riviera's 9b
- ✓Your SSURGO soil type & pH
- ✓Your sun exposure, cast in 3D
See MY Growing Report
Read your specific parcel in Riviera
Pull a site-specific report for your exact address in Riviera, Texas — soil, sun, drainage, frost risk, and scored plant recommendations.
Three things about your lot that Riviera averages can't show:
We read public map data around Riviera — soil, climate, flood, and parcel records. How we handle your address.
25+ data sources read at your address, not the Riviera average
How we know this about Riviera
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 Kleberg 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 Riviera
When does frost risk typically end in Riviera?
The last hard freeze (28°F) in Riviera typically lands around Feb 1, 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 22.
When is the first frost in Riviera?
The first hard freeze (28°F) in Riviera typically arrives around Dec 14, per NOAA 1991–2020 climate normals — the point tender summer crops finish. Lighter frosts run ahead of it, near Nov 30, so the watching starts about Nov 14 — about 316 days after the spring freeze cleared.
How long is the growing season in Riviera?
Measured between 28°F hard freezes, Riviera sees about 316 frost-free days — roughly Feb 1 through Dec 14, per NOAA 1991–2020 climate normals. Tender crops work a shorter one: nearer Feb 22 to Nov 30, about 281 days.
Is the soil safe to grow vegetables in Riviera?
The federal record around Riviera shows 65 documented sites, mostly Nitrate entries (56), the nearest Underground Storage Tanks record about 0.4 miles out — a typical footprint for a growing area, and proximity to a documented site is information, not a diagnosis of any one yard. It's worth seeing which recorded sites sit closest to where you grow, and testing the soil before new food beds near any of them.
How do I protect my plants from frost in Riviera?
From about Nov 14 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 14 (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 14. Hardy greens and roots shrug off light frost and sweeten after it — leave them in.
Everything above is measured at Riviera's scale — its 9b band and its 316-day season. Your yard writes its own version of Riviera'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 Riviera’s own scale
5 of the readings below were taken at Riviera's own scale — the 2,360 acres it covers and 65 documented sites around it; 5 are borrowed from a wider read, named and linked below.
Measured here
- Riviera's own USDA hardiness band, zones 9bUSDA PHZM 2023
- 65 documented contamination sites on the federal record near Riviera, the closest Underground Storage Tanks record about 0.4 miles out from the town centreFederal environmental registers
- Riviera's boundary and the 2,360 acres inside itUS Census TIGER/Line 2025
- Which of 1,086 plants clear zones 9b and a ~316-day seasonGrowable Ground crop-matching engine
- The ecoregion at Riviera's own centroid, the Western Gulf Coastal PlainUS EPA Level III Ecoregions
Inherited from a wider read
- The 28°F hard-freeze dates — Riviera has no normal of its own, so its county's is the closest measured readfrom Kleberg County
- Soil character — no town-scale survey exists, so Riviera's 2,360 acres read through its county's SSURGO summaryfrom Kleberg County
- Growing-degree days and winter chill — measured county-wide only, so the county page carries themfrom Kleberg 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 Kleberg County
What this page can’t tell you
- The soil pH, drainage, sun hours, and frost pockets on any one lot among Riviera's 2,360 acreswhy one lot differs from the next →
- Which side of Riviera you're on — a low spot frosts first and a south wall warms early, and one normal is being asked to speak for all 2,360 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 Riviera-wide figureread your own land →
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