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

Planting zone for Sulphur Springs, TX

Sulphur Springs, TX is in USDA zone 8b across its 2 ZIP codes. The median last spring frost is March 15 and the first fall frost November 14.

Sulphur Springs on the zone map

Outlined: its 1 ZIP code areas · 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.

Zone8b15 to 20 °F
ZIP codes2
Last frostMar 15
First frostNov 14
Growing season245 days

8b 2 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Sulphur Springs, 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 Sulphur Springs, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 15median — 50% chance of a later frost
Safe for tender plantsApril 4only 10% chance of frost after
First fall frostNovember 14median — 10% chance by Oct 29
Growing season245 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 2 and returns around November 28.

From the NOAA station Sulphur Springs, TX, elevation 495 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 Sulphur Springs

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 1 – Feb 15
SpinachSow outdoors · Feb 1 – Feb 22
Broccoli, cabbageStart indoors · Jan 4 – Jan 18
Broccoli, cabbageTransplant · Feb 22 – Mar 8
Onion setsPlant outdoors · Feb 15 – Mar 1
PotatoesPlant outdoors · Feb 22 – Mar 8
LettuceSow outdoors · Feb 15 – Mar 1
Carrots, beetsSow outdoors · Feb 22 – Mar 8
TomatoesStart indoors · Jan 18 – Feb 1
TomatoesTransplant · Mar 22 – Apr 5
Peppers, eggplantStart indoors · Jan 4 – Jan 18
Peppers, eggplantTransplant · Mar 29 – Apr 12
BeansSow outdoors · Mar 22 – Apr 5
Sweet cornSow outdoors · Mar 22 – Apr 5
Cucumbers, squashSow outdoors · Mar 22 – Apr 5
Fall lettuce, spinachSow outdoors · Sep 19 – Oct 3
GarlicPlant cloves · Oct 31 – Dec 5
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 15) and first fall frost (Nov 14) 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 75482 came on Feb 8 — about the same time as the 1991–2020 average (Feb 7).

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 8b in Texas

620 plants native to the lower 48 states, recorded in Texas, and rated by the USDA to survive 15 °F or colder — the bottom of zone 8b. Each links to its USDA PLANTS profile.

Trees 70

American basswood100 ft · blooms late spring · low shade tolerance · to −46 °FAmerican beech80 ft · blooms mid spring · low shade tolerance · to −44 °FAmerican elm120 ft · blooms early spring · medium shade tolerance · to −46 °FAmerican sycamore100 ft · blooms spring · medium shade tolerance · to −34 °FArizona cypress50 ft · blooms spring · low shade tolerance · to −23 °FArizona walnut50 ft · blooms late spring · high shade tolerance · to −33 °F

Shrubs 137

alderleaf mountain mahogany15 ft · blooms late spring · medium shade tolerance · to −41 °Faloe yucca15 ft · blooms early summer · medium shade tolerance · to −1 °FAmerican beautyberry6 ft · blooms early summer · medium shade tolerance · to −8 °FAmerican holly40 ft · blooms mid spring · low shade tolerance · to −20 °FAmerican hornbeam30 ft · blooms mid spring · low shade tolerance · to −34 °FAmerican snowbell10 ft · blooms spring · medium shade tolerance · to −16 °F

Wildflowers & perennials 204

alkali buttercup1 ft · blooms late spring · low shade tolerance · to −38 °Falpine mountainsorrel1 ft · blooms mid summer · medium shade tolerance · to −43 °FAmerican bur-reed3 ft · blooms indeterminate · medium shade tolerance · to −33 °FAmerican century plant6 ft · blooms indeterminate · high shade tolerance · to 12 °FAmerican eelgrass1 ft · blooms mid summer · high shade tolerance · to −33 °FAmerican licorice4 ft · blooms late spring · medium shade tolerance · to −38 °F

Grasses 188

alkali sacaton3 ft · blooms mid summer · high shade tolerance · to −38 °FAmerican cupscale3 ft · blooms early summer · high shade tolerance · to −18 °FArizona cottontop4 ft · blooms late summer · high shade tolerance · to −13 °FArizona fescue2 ft · blooms late spring · high shade tolerance · to −23 °FArizona threeawn2 ft · blooms mid summer · high shade tolerance · to −3 °Fautumn bluegrass1.5 ft · blooms late spring · medium shade tolerance · to −8 °F

Vines 14

American bittersweet15 ft · blooms spring · low shade tolerance · to −38 °FAmerican wisteria50 ft · blooms spring · low shade tolerance · to −3 °Fcatbird grape30 ft · blooms late spring · medium shade tolerance · to −13 °Fcupseed30 ft · blooms late spring · low shade tolerance · to −3 °Fdevil's darning needles15 ft · blooms mid summer · medium shade tolerance · to −38 °Ffrost grape83 ft · blooms late spring · medium shade tolerance · to −23 °F

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 Sulphur Springs, TX.

Soil in Sulphur Springs, TX

The soil mapped at the center of ZIP 75482 is Freestone — fine sandy loam, moderately well drained.

TextureFine sandy loamdrains and warms fast; dries out and needs more feeding
pH6.0slightly acidic; most vegetables like 6.0–7.0
DrainageModerately well drainednatural drainage class
Organic matter2.8%moderate
Hydrologic groupC/Dslow when drained; wet otherwise
Farmland classprime farmlandUSDA classification

Map unit: Freestone fine sandy loam, 1 to 3 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 75482; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Sulphur Springs, TX

Summer high95 °Faverage high, August
Winter low34 °Faverage low, January
Hot days94days a year at 90 °F or more
Freezing nights49nights a year at 32 °F or less
Growing degree days6,139base 50 °F — the season’s usable heat
Longest day14 h 21 mindaylight on June 21
Shortest day9 h 57 mindaylight on December 21
Onions to growIntermediateday-neutral types bulb best; long-day varieties may not bulb fully
Precipitation46.5 inper year, rain and melted snow

Average high and low, by month

20°30°40°50°60°70°80°90°100°110°32 °FJanuary: average high 55 °F, low 34 °F 55°34° JanFebruary: average high 60 °F, low 38 °F 60°38° FebMarch: average high 67 °F, low 45 °F 67°45° MarApril: average high 75 °F, low 52 °F 75°52° AprMay: average high 82 °F, low 62 °F 82°62° MayJune: average high 90 °F, low 71 °F 90°71° JunJuly: average high 94 °F, low 74 °F 94°74° JulAugust: average high 95 °F, low 73 °F 95°73° AugSeptember: average high 89 °F, low 66 °F 89°66° SepOctober: average high 78 °F, low 54 °F 78°54° OctNovember: average high 66 °F, low 44 °F 66°44° NovDecember: average high 57 °F, low 36 °F 57°36° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 3.30 in precipitation 3.3 JanFebruary: 3.63 in precipitation 3.6 FebMarch: 4.43 in precipitation 4.4 MarApril: 4.31 in precipitation 4.3 AprMay: 4.30 in precipitation 4.3 MayJune: 4.27 in precipitation 4.3 JunJuly: 3.03 in precipitation 3.0 JulAugust: 2.92 in precipitation 2.9 AugSeptember: 2.96 in precipitation 3.0 SepOctober: 4.90 in precipitation 4.9 OctNovember: 3.98 in precipitation 4.0 NovDecember: 4.47 in precipitation 4.5 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Sulphur Springs, TX (2 mi away); precipitation: Sulphur Springs, TX (2 mi away). Daylight is calculated from latitude.

ZIP codes in Sulphur Springs

754828b
15 to 20 °F
754838b
15 to 20 °F

Texas planting zones →

Questions about Sulphur Springs

What planting zone is Sulphur Springs, TX?

Sulphur Springs, TX is in USDA hardiness zone 8b on the 2023 map (8b: 15 to 20 °F).

When is the last frost in Sulphur Springs, TX?

The median last spring frost is March 15 and the median first fall frost is November 14 (NOAA 1991–2020 normals, Sulphur Springs station).

When can I plant a garden in Sulphur Springs, TX?

Cool-season crops like peas and spinach go in around Feb 1 – Feb 22; tomatoes, peppers, beans and squash after about Mar 22, once frost risk has passed.

What kind of onions grow in Sulphur Springs, TX?

Intermediate onions: the longest day is 14 h 21 min, so day-neutral types bulb best; long-day varieties may not bulb fully.

How much rain and snow does Sulphur Springs, TX get?

About 46.5 inches of precipitation a year (NOAA 1991–2020 normals).