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

Planting zone for 75104 — Cedar Hill, TX

ZIP code 75104 (Cedar Hill, Dallas County) is in USDA zone 8b: the coldest winter night averages 15 to 20 °F. The median last spring frost is March 20 and the first fall frost November 13.

Where ZIP 75104 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.

Zone8b15 to 20 °F
Coldest night−9.4 to −6.7 °C
Last frostMar 20
First frostNov 13
2012 zone8a

Was 8a 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 8b means →

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Cedar Hill, 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 Cedar Hill, TX

JanFebMarAprMayJunJulAugSepOctNovDec
Blue: frost possible · fading green: frost risk falling or rising (90% → 10%) · green: frost-free
Last spring frostMarch 20median — 50% chance of a later frost
Safe for tender plantsApril 8only 10% chance of frost after
First fall frostNovember 13median — 10% chance by Oct 27
Growing season236 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 8 and returns around November 25.

From the NOAA station Joe Pool Lake, TX — 4 miles away, elevation 591 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 75104

JanFebMarAprMayJunJulAugSepOctNovDec
PeasSow outdoors · Feb 6 – Feb 20
SpinachSow outdoors · Feb 6 – Feb 27
Broccoli, cabbageStart indoors · Jan 9 – Jan 23
Broccoli, cabbageTransplant · Feb 27 – Mar 13
Onion setsPlant outdoors · Feb 20 – Mar 6
PotatoesPlant outdoors · Feb 27 – Mar 13
LettuceSow outdoors · Feb 20 – Mar 6
Carrots, beetsSow outdoors · Feb 27 – Mar 13
TomatoesStart indoors · Jan 23 – Feb 6
TomatoesTransplant · Mar 27 – Apr 10
Peppers, eggplantStart indoors · Jan 9 – Jan 23
Peppers, eggplantTransplant · Apr 3 – Apr 17
BeansSow outdoors · Mar 27 – Apr 10
Sweet cornSow outdoors · Mar 27 – Apr 10
Cucumbers, squashSow outdoors · Mar 27 – Apr 10
Fall lettuce, spinachSow outdoors · Sep 18 – Oct 2
GarlicPlant cloves · Oct 30 – Dec 4
Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 20) and first fall frost (Nov 13) 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 75104 came on Feb 8 — 3 days later than the 1991–2020 average (Feb 5).

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 Cedar Hill, TX.

Soil in Cedar Hill, TX

The soil mapped at the center of ZIP 75104 is Eddy — clay loam, well drained.

TextureClay loamholds water and nutrients; slow to drain and warm up
pH8.2alkaline; most vegetables like 6.0–7.0
DrainageWell drainednatural drainage class
Organic matter1.25%low — add compost
Hydrologic groupDwater soaks in very slowly
Farmland classNot prime farmlandUSDA classification

Map unit: Eddy-Whitewright complex, 8 to 20 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 75104; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Cedar Hill, TX

Summer high97 °Faverage high, August
Winter low33 °Faverage low, January
Hot days101days a year at 90 °F or more
Freezing nights52nights a year at 32 °F or less
Growing degree days6,315base 50 °F — the season’s usable heat
Longest day14 h 18 mindaylight on June 21
Shortest day10 h 00 mindaylight on December 21
Onions to growShort-daysummer days stay under about 14 h 20 min, so long-day varieties won’t bulb
Precipitation41.5 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 58 °F, low 33 °F 58°33° JanFebruary: average high 62 °F, low 38 °F 62°38° FebMarch: average high 69 °F, low 45 °F 69°45° MarApril: average high 77 °F, low 53 °F 77°53° AprMay: average high 84 °F, low 61 °F 84°61° MayJune: average high 92 °F, low 69 °F 92°69° JunJuly: average high 96 °F, low 73 °F 96°73° JulAugust: average high 97 °F, low 73 °F 97°73° AugSeptember: average high 90 °F, low 66 °F 90°66° SepOctober: average high 80 °F, low 54 °F 80°54° OctNovember: average high 68 °F, low 45 °F 68°45° NovDecember: average high 60 °F, low 35 °F 60°35° Dec

Precipitation by month inches

0″1″2″3″4″5″January: 2.80 in precipitation 2.8 JanFebruary: 2.83 in precipitation 2.8 FebMarch: 3.62 in precipitation 3.6 MarApril: 4.10 in precipitation 4.1 AprMay: 4.87 in precipitation 4.9 MayJune: 4.09 in precipitation 4.1 JunJuly: 2.21 in precipitation 2.2 JulAugust: 2.60 in precipitation 2.6 AugSeptember: 3.31 in precipitation 3.3 SepOctober: 4.74 in precipitation 4.7 OctNovember: 3.01 in precipitation 3.0 NovDecember: 3.33 in precipitation 3.3 Dec

NOAA NCEI U.S. Climate Normals 1991–2020 — temperature: Joe Pool Lake, TX (4 mi away); precipitation: Cedar Hill 1.4 N, TX (within 1 mile). Daylight is calculated from latitude.

Nearby ZIP codes

All 8 nearest ZIP codes share zone 8b.

751068b
Cedar Hill, TX · <1 mi
752498b
Dallas, TX · 4 mi
750548b
Grand Prairie, TX · 4 mi
751378b
Duncanville, TX · 5 mi
751168b
Duncanville, TX · 6 mi
751158b
Desoto, TX · 6 mi
750528b
Grand Prairie, TX · 6 mi
751238b
Desoto, TX · 7 mi

All 2 ZIP codes in Cedar Hill → · Texas planting zones →

Questions about 75104

What planting zone is ZIP code 75104?

ZIP code 75104 (Cedar Hill, TX) is in USDA hardiness zone 8b on the 2023 map: the coldest night of an average winter reaches 15 to 20 °F (−9.4 to −6.7 °C).

When is the last frost in Cedar Hill, TX?

The median last spring frost (32 °F) near 75104 is March 20; after April 8 there is only a 10% chance of frost. Data: NOAA 1991–2020 normals, Joe Pool Lake station.

When is the first frost in Cedar Hill, TX?

The median first fall frost near 75104 is November 13, giving a median frost-free growing season of 236 days.

When should I plant tomatoes in 75104?

Start tomato seeds indoors around Jan 23 – Feb 6 and set transplants outside around Mar 27 – Apr 10, one to three weeks after the median last frost.

How much rain and snow does 75104 get?

About 41.5 inches of precipitation a year (NOAA 1991–2020 normals, Cedar Hill 1.4 N station).

How hot do summers get in Cedar Hill, TX?

The average high peaks at 97 °F in August, with about 101 days a year at 90 °F or more.

What kind of soil does 75104 have?

The USDA soil survey maps Eddy at the center of ZIP 75104: clay loam, well drained, pH about 8.2 (alkaline).

Did spring come early in Cedar Hill, TX in 2026?

Spring leaf-out near 75104 came on Feb 8 in 2026, 3 days later than the 1991–2020 average (Feb 5), according to the USA National Phenology Network Spring Index.

What kind of onions grow in Cedar Hill, TX?

Short-day onions: the longest day near 75104 is 14 h 18 min, so summer days stay under about 14 h 20 min, so long-day varieties won’t bulb.

Did the zone for 75104 change?

Yes. The 2012 USDA map put 75104 in zone 8a; the 2023 map puts it in zone 8b. The newer map uses 1991–2020 data and more weather stations.