Data: 2023 USDA zones (PRISM/OSU) · NOAA 1991–2020 normals · updated Oct 29, 2026

Planting zone for 77575 — Liberty, TX

ZIP code 77575 (Liberty, Liberty County) is in USDA zone 9b: the coldest winter night averages 25 to 30 °F. The median last spring frost is February 21 and the first fall frost December 1.

Where ZIP 77575 is

Outlined: the ZIP code area · tap the map for the zone at any spot · scroll or pinch to zoom

Not the official USDA Plant Hardiness Zone Map. Zones come from the 2023 USDA hardiness-zone data by the PRISM Group, Oregon State University; we re-mapped and recolored them. The official map is at planthardiness.ars.usda.gov.

Zone9b25 to 30 °F

Coldest night−3.9 to −1.1 °C

Last frostFeb 21

First frostDec 1

2012 zone9a

Was 9a on the 2012 map — half a zone warmer now. The zone is the one at the center of the ZIP code; hilly ZIPs can span two zones. What zone 9b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Liberty, TX…

Forecast data: National Weather Service (api.weather.gov), public domain. This is not a warning service — for official frost and freeze warnings see weather.gov.

Frost dates in Liberty, TX

JanFebMarAprMayJunJulAugSepOctNovDec

Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free

Last spring frostFebruary 21median — 50% chance of a later frost

Safe for tender plantsMarch 17only 10% chance of frost after

First fall frostDecember 1median — 10% chance by Nov 9

Growing season286 daysfrost-free, median

A hard freeze (28 °F) usually ends around January 30 and returns around December 22.

From the NOAA station Liberty, TX — 3 miles away, elevation 36 ft. NOAA NCEI U.S. Climate Normals 1991–2020, 32 °F threshold. Low spots and valleys can freeze later in spring than the station.

When to plant vegetables in 77575

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Jan 10 – Jan 24

SpinachSow outdoors · Jan 10 – Jan 31

Broccoli, cabbageStart indoors · Dec 13 – Dec 27

Broccoli, cabbageTransplant · Jan 31 – Feb 14

Onion setsPlant outdoors · Jan 24 – Feb 7

PotatoesPlant outdoors · Jan 31 – Feb 14

LettuceSow outdoors · Jan 24 – Feb 7

Carrots, beetsSow outdoors · Jan 31 – Feb 14

TomatoesStart indoors · Dec 27 – Jan 10

TomatoesTransplant · Feb 28 – Mar 14

Peppers, eggplantStart indoors · Dec 13 – Dec 27

Peppers, eggplantTransplant · Mar 7 – Mar 21

BeansSow outdoors · Feb 28 – Mar 14

Sweet cornSow outdoors · Feb 28 – Mar 14

Cucumbers, squashSow outdoors · Feb 28 – Mar 14

Fall lettuce, spinachSow outdoors · Oct 6 – Oct 20

GarlicPlant cloves · Nov 17 – Dec 22

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Feb 21) and first fall frost (Dec 1) with the rules of thumb U.S. extension services publish. Cool-season crops take a light frost; warm-season crops do best once the soil is above about 60 °F.

When spring arrived in 2026

In 2026, spring leaf-out near 77575 came on Jan 11 — 13 days earlier than the 1991–2020 average (Jan 24).

average
Jan 242026
Jan 11

JanFebMarAprMayJun

The Spring Index marks the day when accumulated warmth is enough for lilac and honeysuckle to leaf out — a widely used signal that the growing season has started. Source: USA National Phenology Network, www.usanpn.org — Spring Indices, first leaf, 2026 (data as of 2026-09-08) and 30-year average 1991–2020 (CC BY 4.0).

Native plants for zone 9b in Texas

646 plants native to the lower 48 states, recorded in Texas, and rated by the USDA to survive 25 °F or colder — the bottom of zone 9b. Each links to its USDA PLANTS profile.

Source: USDA, NRCS. 2026. The PLANTS Database (plants.usda.gov), National Plant Data Team — state distribution, native status and the “Temperature, Minimum” characteristic. Check light, moisture and soil needs before buying; local nurseries and your state native plant society can confirm what thrives in Liberty, TX.

Soil in Liberty, TX

The soil mapped at the center of ZIP 77575 is Buna — very fine sandy loam, well drained.

TextureVery fine sandy loamdrains and warms fast; dries out and needs more feeding

pH5.3strongly acidic; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter3%moderate

Hydrologic groupCwater soaks in slowly

Farmland classFarmland of statewide importanceUSDA classification

Map unit: Buna very fine sandy loam, 3 to 8 percent slopes.

Soil Survey Staff, Natural Resources Conservation Service, USDA. Soil Survey Geographic (SSURGO) Database, via Soil Data Access, accessed 2026-10-29. The soil at the center point of ZIP 77575; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Liberty, TX

Summer high94 °Faverage high, August

Winter low41 °Faverage low, January

Hot days101days a year at 90 °F or more

Freezing nights14nights a year at 32 °F or less

Growing degree days7,200base 50 °F — the season’s usable heat

Longest day14 h 05 mindaylight on June 21

Shortest day10 h 12 mindaylight on December 21

Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb

Precipitation62.8 inper year, rain and melted snow

Average high and low, by month

Precipitation by month inches

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Liberty, TX (3 mi away); precipitation: Liberty, TX (3 mi away). Daylight is calculated from latitude.

Nearby ZIP codes

6 of the 8 nearest ZIP codes are in a different zone — elevation and distance from water change winter lows quickly.

Mont Belvieu, TX · 17 mi

Texas planting zones →

Questions about 77575

What planting zone is ZIP code 77575?

ZIP code 77575 (Liberty, TX) is in USDA hardiness zone 9b on the 2023 map: the coldest night of an average winter reaches 25 to 30 °F (−3.9 to −1.1 °C).

When is the last frost in Liberty, TX?

The median last spring frost (32 °F) near 77575 is February 21; after March 17 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Liberty station.

When is the first frost in Liberty, TX?

The median first fall frost near 77575 is December 1, giving a median frost-free growing season of 286 days.

When should I plant tomatoes in 77575?

Start tomato seeds indoors around Dec 27 – Jan 10 and set transplants outside around Feb 28 – Mar 14, one to three weeks after the median last frost.

How much rain and snow does 77575 get?

About 62.8 inches of precipitation a year (NOAA 1991–2020 normals, Liberty station).

How hot do summers get in Liberty, TX?

The average high peaks at 94 °F in August, with about 101 days a year at 90 °F or more.

What kind of soil does 77575 have?

The USDA soil survey maps Buna at the center of ZIP 77575: very fine sandy loam, well drained, pH about 5.3 (strongly acidic).

Did spring come early in Liberty, TX in 2026?

Spring leaf-out near 77575 came on Jan 11 in 2026, 13 days earlier than the 1991–2020 average (Jan 24), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Liberty, TX?

Short-day onions: the longest day near 77575 is 14 h 05 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 77575 change?

Yes. The 2012 USDA map put 77575 in zone 9a; the 2023 map puts it in zone 9b. The newer map uses 1991–2020 data and more weather stations.