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

Planting zone for Rule, TX

Rule, TX is in USDA zone 8a across its 2 ZIP codes. The median last spring frost is March 28 and the first fall frost November 7.

Rule on the zone map

Outlined: its 2 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.

Zone8a10 to 15 °F

ZIP codes2

Last frostMar 28

First frostNov 7

Growing season225 days

8a 2 ZIPs

Frost forecast — next 7 nights

live from the National Weather Service

Loading the forecast for Rule, 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 Rule, TX

JanFebMarAprMayJunJulAugSepOctNovDec

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

Last spring frostMarch 28median — 50% chance of a later frost

Safe for tender plantsApril 14only 10% chance of frost after

First fall frostNovember 7median — 10% chance by Oct 25

Growing season225 daysfrost-free, median

A hard freeze (28 °F) usually ends around March 15 and returns around November 17.

From the NOAA station Haskell, TX, elevation 1,591 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 Rule

JanFebMarAprMayJunJulAugSepOctNovDec

PeasSow outdoors · Feb 14 – Feb 28

SpinachSow outdoors · Feb 14 – Mar 7

Broccoli, cabbageStart indoors · Jan 17 – Jan 31

Broccoli, cabbageTransplant · Mar 7 – Mar 21

Onion setsPlant outdoors · Feb 28 – Mar 14

PotatoesPlant outdoors · Mar 7 – Mar 21

LettuceSow outdoors · Feb 28 – Mar 14

Carrots, beetsSow outdoors · Mar 7 – Mar 21

TomatoesStart indoors · Jan 31 – Feb 14

TomatoesTransplant · Apr 4 – Apr 18

Peppers, eggplantStart indoors · Jan 17 – Jan 31

Peppers, eggplantTransplant · Apr 11 – Apr 25

BeansSow outdoors · Apr 4 – Apr 18

Sweet cornSow outdoors · Apr 4 – Apr 18

Cucumbers, squashSow outdoors · Apr 4 – Apr 18

Fall lettuce, spinachSow outdoors · Sep 12 – Sep 26

GarlicPlant cloves · Oct 24 – Nov 28

Start seeds indoorsSow or plant outdoorsFall plantingMedian last & first frost

Counted from the median last spring frost (Mar 28) and first fall frost (Nov 7) 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 79547 came on Feb 9 — about the same time as the 1991–2020 average (Feb 10).

average
Feb 102026
Feb 9

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 8a in Texas

601 plants native to the lower 48 states, recorded in Texas, and rated by the USDA to survive 10 °F or colder — the bottom of zone 8a. 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 Rule, TX.

Soil in Rule, TX

The soil mapped at the center of ZIP 79547 is Devol — loamy sand, well drained.

TextureLoamy sanddrains and warms fast; dries out and needs more feeding

pH6.7neutral; most vegetables like 6.0–7.0

DrainageWell drainednatural drainage class

Organic matter0.75%low — add compost

Hydrologic groupAwater soaks in fast

Farmland classNot prime farmlandUSDA classification

Map unit: Devol-Nobscot complex, 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 79547; soils change within a few hundred feet, so a home soil test (pH, nutrients) is still the best guide.

Climate in Rule, TX

Summer high95 °Faverage high, July

Winter low29 °Faverage low, January

Hot days110days a year at 90 °F or more

Freezing nights63nights a year at 32 °F or less

Growing degree days5,711base 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

Precipitation26.4 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: Haskell, TX (10 mi away); precipitation: Rule 0.5 Nw, TX (within 1 mile). Daylight is calculated from latitude.

ZIP codes in Rule

Texas planting zones →

Questions about Rule

What planting zone is Rule, TX?

Rule, TX is in USDA hardiness zone 8a on the 2023 map (8a: 10 to 15 °F).

When is the last frost in Rule, TX?

The median last spring frost is March 28 and the median first fall frost is November 7 (NOAA 1991–2020 normals, Haskell station).

When can I plant a garden in Rule, TX?

Cool-season crops like peas and spinach go in around Feb 14 – Mar 7; tomatoes, peppers, beans and squash after about Apr 4, once frost risk has passed.

What kind of onions grow in Rule, 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 Rule, TX get?

About 26.4 inches of precipitation a year (NOAA 1991–2020 normals).