Planting Date FinderZone, frost date, planting window

Planting calendar for Grand Prairie, TX

Direct answer. In Grand Prairie, TX, the median last 32°F date at ARLINGTON MUNI AP, TX US (USW00053907) is March 9, and the median first 32°F date is November 21. The station is 4.5 miles from the city point. Crop windows come from Texas A&M AgriLife Extension. Where that guide counts weeks from a frost date and does not name a 10%, 50%, or 90% level, those weeks are applied to these median dates.

Median last 32°F March 9. Median first 32°F November 21. Frost dates for Grand Prairie.

A wall calendar surrounded by vegetables, herbs, seed packets, and watering cans.
Median last 32°F is March 9. Median first 32°F is November 21. The 50% growing-season length is 256 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Last 32°F in spring

NCEI’s probability is the chance the last spring minimum of 32°F or lower occurs on or after the date.

ProbabilityDateHow to read it
90%February 18Earlier date. A last 32°F on or after this day is common.
50%March 9Median.
10%March 28Later date. A last 32°F on or after this day is uncommon.

First 32°F in fall

NCEI’s probability is the chance the first autumn minimum of 32°F or lower occurs on or before the date.

ProbabilityDateHow to read it
10%November 3Earlier date. A first 32°F on or before this day is uncommon.
50%November 21Median.
90%December 7Later date. A first 32°F on or before this day is common.

32°F growing-season length

Days between the last spring 32°F and the first autumn 32°F. The figure is a length the season meets or exceeds at that probability, from NCEI, not a subtraction done on this site.

Probability the season is at least this longDays
10%282
50%256
90%229

28°F threshold

10%50%90%
Last, on or afterMarch 14February 25January 29
First, on or beforeNovember 14December 4December 30
Season at least319 days285 days254 days

36°F threshold

10%50%90%
Last, on or afterApril 15March 24March 3
First, on or beforeOctober 22November 8November 26
Season at least257 days229 days204 days

Station ARLINGTON MUNI AP, TX US (USW00053907). Completeness flag R, 18 years used for the 32°F dates. NCEI’s annual probability of at least one day at or below 32°F is 100%. Freeze dates are conditional on that threshold occurring. Elevation 192 m. The same probability language applies to the 28°F and 36°F rows when those dates passed the same quality checks.

Questions

Which frost date do the crop weeks use?
Weeks after the frost-free date use the median last 32°F date, March 9, when the guide does not name a probability. Weeks before the first freeze use the median first 32°F date, November 21. Both medians are 50% dates in the NOAA 1991–2020 normals for the station on this page. The page says when that anchor was used.
Where do the crop dates come from?
Crop dates come from the extension guide cited on this page, not from a second calendar invented here. The publisher and the title are printed with the source note. A month without a day is expanded to the first and last day of that month, and the page says so. A phrase without two dates stays a phrase.
Is this planting calendar a forecast?
No. The frost dates are 1991–2020 climate normals at the station 4.5 miles from the city point. The crop windows are the cited guide’s ranges, shifted only when that guide itself used weeks. A cold spring can still fall past the median. The National Weather Service forecast covers a particular night. This page does not.

Crops in the cited guide

SowTomatoesSpringMarch 16 – May 4As printed1 to 8 weeks afterFallAugust 15 – August 29As printed12 to 14 weeks before70-90 days to harvestSowPeppersSpringMarch 16 – May 4As printed1 to 8 weeks afterFallAugust 1 – August 29As printed12 to 16 weeks before60-90 days to harvestSowEggplantSpringMarch 23 – April 20As printed2 to 6 weeks afterFallAugust 1 – August 29As printed12 to 16 weeks before80-90 days to harvestSowCucumberSpringMarch 16 – April 20As printed1 to 6 weeks afterFallAugust 29 – September 12As printed10 to 12 weeks before50-70 days to harvestSowSummer squashSpringMarch 16 – April 6As printed1 to 4 weeks afterFallAugust 8 – August 29As printed12 to 15 weeks before50-60 days to harvestSowWinter squashSpringMarch 16 – April 6As printed1 to 4 weeks afterFallAugust 15 – August 29As printed12 to 14 weeks before85-100 days to harvestSowSnap beans, bushSpringMarch 16 – April 6As printed1 to 4 weeks afterFallSeptember 12 – September 26As printed8 to 10 weeks before45-60 days to harvestSowSnap beans, poleSpringMarch 16 – April 6As printed1 to 4 weeks afterFallAugust 1 – August 15As printed14 to 16 weeks before60-70 days to harvestSowSweet cornSpringMarch 16 – April 20As printed1 to 6 weeks afterFallAugust 15 – August 29As printed12 to 14 weeks before70-90 days to harvestSowLettuceSpringJanuary 27 – March 23As printed6 weeks before or 2 weeks afterFallAugust 15 – September 12As printed10 to 14 weeks before40-80 days to harvestSowSpinachSpringJanuary 13 – March 2As printed1 to 8 weeks beforeFallAugust 1 – November 7As printed2 to 16 weeks before40-60 days to harvestSowCollards and kaleSpringJanuary 27 – February 24As printed2 to 6 weeks beforeFallAugust 29 – September 26As printed8 to 12 weeks before50-80 days to harvestSowBroccoliSpringJanuary 27 – February 10As printed4 to 6 weeks beforeFallAugust 1 – September 12As printed10 to 16 weeks before60-80 days to harvestSowCabbageSpringJanuary 27 – February 10As printed4 to 6 weeks beforeFallAugust 1 – September 12As printed10 to 16 weeks before60-90 days to harvestSowCarrotsSpringJanuary 27 – February 10As printed4 to 6 weeks beforeFallAugust 15 – August 29As printed12 to 14 weeks before70-80 days to harvestSowRadishesSpringJanuary 27 – April 6As printed6 weeks before / 4 weeks afterFallSeptember 26 – November 14As printed1 to 8 weeks before25-40 days to harvestSowBeetsSpringJanuary 27 – February 10As printed4 to 6 weeks beforeFallSeptember 12 – September 26As printed8 to 10 weeks before50-60 days to harvestSowEnglish peasSpringJanuary 13 – February 24As printed2 to 8 weeks beforeFallAugust 29 – November 7As printed2 to 12 weeks before55-90 days to harvestSowSouthern peasSpringMarch 23 – May 18As printed2 to 10 weeks afterFallAugust 29 – September 12As printed10 to 12 weeks before60-70 days to harvestSowOnions, from plantsSpringDecember 30 – February 10As printed4 to 10 weeks before80-120 days to harvestSowGarlicFallOctober 10 – October 24As printed4 to 6 weeks before140-150 days to harvestSowIrish potatoesSpringJanuary 27 – February 10As printed4 to 6 weeks beforeFallAugust 1 – August 15As printed14 to 16 weeks before75-100 days to harvestSowSweet potatoesSpringMarch 23 – May 4As printed2 to 8 weeks after100-130 days to harvestSowOkraSpringMarch 23 – April 20As printed2 to 6 weeks afterFallAugust 1 – August 29As printed12 to 16 weeks before55-65 days to harvestSowWatermelonSpringMarch 16 – April 20As printed1 to 6 weeks afterFallAugust 1 – August 15As printed14 to 16 weeks before80-100 days to harvestSowCollardsSpringJanuary 27 – February 24As printed2 to 6 weeks beforeFallAugust 29 – September 26As printed8 to 12 weeks before50-80 days to harvestSowSwiss chardSpringJanuary 27 – February 24As printed2 to 6 weeks beforeFallAugust 15 – August 29As printed12 to 14 weeks before45-55 days to harvestSowTurnipsSpringJanuary 27 – February 24As printed2 to 6 weeks beforeFallAugust 29 – November 7As printed2 to 12 weeks before30-60 days to harvestSowPumpkinSpringMarch 16 – April 6As printed1 to 4 weeks afterFallAugust 15 – August 29As printed12 to 14 weeks before75-100 days to harvestSowBrussels sproutsSpringJanuary 27 – February 10As printed4 to 6 weeks beforeFallAugust 15 – September 12As printed10 to 14 weeks before90-100 days to harvestSowCauliflowerFallAugust 1 – September 12As printed10 to 16 weeks before70-90 days to harvestSowMustardSpringMarch 16 – April 20As printed1 to 6 weeks afterFallAugust 1 – September 12As printed10 to 16 weeks before30-40 days to harvest

Grand Prairie, TX

Zone 8bAverage annual extreme minimum 15°F to 20°F

Median last 32°F is March 9. Median first 32°F is November 21. The 50% growing-season length is 256 days. The green band runs from the median last frost to the median first frost. Thin ticks mark the 10%, 50%, and 90% dates.

Outside the median season Growing seasonTicks: 10%, 50%, and 90%

Texas. Nearest qualified station: ARLINGTON MUNI AP, TX US (USW00053907), 4.5 miles. Median last 32°F March 9. Median first 32°F November 21. The 50% growing-season length is 256 days.

Open the ZIP page · Crop guides for Texas

32°F probabilities at this station
10%50%90%
Last 32°F on or afterMarch 28March 9February 18
First 32°F on or beforeNovember 3November 21December 7

Column order matches the NCEI file: for the last freeze, 10% is the later date and 90% is the earlier date. How to read the probabilities.

A wall calendar surrounded by vegetables, herbs, seed packets, and watering cans.

Planting calendar

Windows below are from Texas A&M AgriLife Extension, Texas Home Vegetable Gardening Guide, retrieved 2026-10-10. Table 8 is statewide and is written as weeks before or after the frost-free date (spring) and the first freeze date (fall). It is not a single calendar date for every Texas city.

Date checks use your device’s calendar and appear after the page loads.

State crop pages: Tomatoes · Peppers · Eggplant · Cucumber · Summer squash · Winter squash · Snap beans, bush · Snap beans, pole