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Last and first frost dates in Fort Worth

United States

In Fort Worth the last spring frost usually comes around 19 February and the first autumn frost around 30 November, which leaves about 284 frost-free days (median of 2016–2025). Tomato seedlings can go into open ground from 1 March to 10 August.

Last spring frostaround 19 February
First autumn frostaround 30 November
Frost-free days284 days
Hardiness zone (USDA-equivalent)official USDA map: 8b

Median of 2016–2025 for the 25 km grid cell of the city: the last day at or below 0 °C in spring and the first in autumn (ERA5 reanalysis via Open-Meteo). In a cold year a frost can come a week or two later — Greenly warns 48 hours ahead.

When is the last frost in Fort Worth?

The last frost in Fort Worth usually comes around 19 February: that is the median of 2016–2025, so in about half of those years the last night at or below 0 °C came later. Hardy crops start before it and frost-tender ones only after it: in the table below arugula can go into open ground from 29 January, while corn waits until 26 February. The first autumn frost follows around 30 November, about 284 days later: harvest or cover frost-tender crops before then.

When to sow and plant

CropSow for seedlingsPlant out in a greenhouseOpen ground
Achocha27 December – 22 August5 February – 1 October26 February – 1 October
Ageratumfrom 14 December—from 1 March
Arugula——sow 29 January – 26 October
Basil22 January – 28 September1 March – 5 November22 March – 5 November
Beet——sow 29 January – 1 October
Bell Pepper31 December – 11 June1 March – 10 August22 March – 10 August
Black-eyed Susanfrom 5 December—from 26 February
Bok Choy1 January – 9 October5 February – 13 November26 February – 13 November
Borage——sow 26 February – 6 October
Broad bean——sow 29 January – 22 August
Broccoli——sow 29 January – 15 August
Brussels Sprouts24 November – 13 July8 January – 27 August29 January – 27 August
Busy Lizziefrom 4 December—from 26 February
Cabbage——sow 29 January – 23 July
Calendula——sow from 29 January
Carrot——sow 29 January – 7 September
Cauliflower27 November – 15 August8 January – 26 September29 January – 26 September
Celeriac20 November – 12 June5 February – 28 August26 February – 28 August
Celery20 November – 22 June5 February – 7 September26 February – 7 September
Celosiafrom 26 Decemberfrom 9 Februaryfrom 2 March
Chamomile——sow 29 January – 26 September
Chayote9 November – 5 June5 February – 1 September26 February – 1 September
Chickpea——sow 29 January – 12 August
Chicory14 December – 6 September—29 January – 1 October
Chili Pepper31 December – 18 July1 March – 16 September22 March – 16 September
China asterfrom 8 Januaryfrom 1 Marchfrom 22 March
Chives——sow 29 January – 17 September
Cilantro——sow 29 January – 27 September
Corn——sow 26 February – 12 August
Corn poppy——sow from 29 January
Cosmosfrom 26 Decemberfrom 9 Februaryfrom 2 March
Cucumber1 February – 18 August1 March – 15 September22 March – 15 September
Daikon——sow 29 January – 24 September
Delphiniumfrom 10 November—from 29 January
Dill——sow 29 January – 7 October
Edging lobeliafrom 4 December—from 26 February
Eggplant31 December – 11 June1 March – 10 August22 March – 10 August
Florence fennel22 December – 22 August5 February – 6 October26 February – 6 October
Foxglovefrom 23 October—from 29 January
Garden sorrel——sow 29 January – 25 September
Green Beans——sow 2 March – 20 August
Hollyhock——sow from 29 January
Hyssop——sow 29 January – 18 August
Kale——sow 29 January – 19 September
Kiwano7 January – 25 August8 February – 26 September1 March – 26 September
Kohlrabi——sow 29 January – 29 September
Leek30 October – 3 June8 January – 12 August29 January – 12 August
Lemon balm——sow 29 January – 21 September
Lettuce——sow 29 January – 4 October
Lisianthusfrom 13 Octoberfrom 8 Januaryfrom 29 January
Lovage——sow from 29 January
Luffa18 January – 19 June1 March – 31 July22 March – 31 July
Marigoldfrom 25 Decemberfrom 5 Februaryfrom 26 February
Marjoram31 December – 6 September—22 March – 5 November
Melon1 February – 5 August1 March – 2 September22 March – 2 September
Microgreens——sow 2 March – 16 November
Moringa23 January – 11 September19 March – 5 November9 April – 5 November
Moss rosefrom 11 December—from 26 February
Mustard greens——sow 29 January – 16 October
Napa cabbage3 January – 16 September5 February – 19 October26 February – 19 October
Nasturtiumfrom 29 Decemberfrom 5 Februaryfrom 26 February
Okra18 January – 30 August1 March – 11 October22 March – 11 October
Oregano9 November – 27 August8 January – 26 October29 January – 26 October
Pansyfrom 13 Novemberfrom 8 Januaryfrom 29 January
Parsley——sow 29 January – 15 September
Parsnip——sow 29 January – 4 August
Peanut23 January – 26 July1 March – 1 September22 March – 1 September
Peas——sow 29 January – 17 September
Petuniafrom 28 Decemberfrom 1 Marchfrom 22 March
Physalis25 December – 23 July8 February – 6 September1 March – 6 September
Pumpkin18 January – 24 June1 March – 5 August22 March – 5 August
Purple coneflowerfrom 7 November—from 29 January
Radish——sow 29 January – 31 October
Sage20 November – 23 August8 January – 11 October29 January – 11 October
Scarlet sagefrom 18 December—from 1 March
Snapdragonfrom 4 Novemberfrom 8 Januaryfrom 29 January
Soybean——sow 22 March – 11 September
Spinach——sow 29 January – 6 October
Stevia21 December – 14 July8 February – 1 September1 March – 1 September
Stock——sow from 29 January
Sunflower——sow from 2 March
Sweet alyssum——sow from 29 January
Sweet Corn14 January – 6 September5 February – 28 September26 February – 28 September
Sweet peafrom 27 Novemberfrom 8 Januaryfrom 29 January
Sweet William——sow from 29 January
Swiss Chard——sow 29 January – 1 October
Thyme——sow 29 January – 12 August
Tomato18 December – 19 June8 February – 10 August1 March – 10 August
Turnip——sow 29 January – 3 October
Watercress——sow 29 January – 14 October
Watermelon1 February – 24 July1 March – 21 August22 March – 21 August
Zinniafrom 12 Februaryfrom 19 Marchfrom 9 April
Zucchini8 February – 23 August1 March – 13 September22 March – 13 September

Planting out: a week after the last frost once the soil is warm enough for the crop; frost-hardy crops three weeks before it; an unheated greenhouse three weeks earlier. Seedlings are sown so they are ready on that day. Each window starts on the Greenly calendar date and ends on the last day that still leaves the crop’s days to harvest (from its card) before the average first autumn frost, plus six weeks of picking for crops harvested over weeks (tomatoes, peppers, aubergines, cucumbers, courgettes, pumpkins, watermelons, beans) — our rule; earlier in the window is safer.

What planting zone is Fort Worth?

The official USDA map (2023, 1991–2020 data) puts the centre of Fort Worth (ZIP 76104) in zone 8b. Zone 8b stands for an average coldest night of 15 to 20 °F (-9.4 to -6.7 °C), so perennials hardy to zone 8b or a colder zone should come through a typical winter here.

Check the official USDA map for Fort Worth: USDA Plant Hardiness Zone Map.

When the soil warms up in Fort Worth

The day the top 7 cm of soil first averages each temperature over a week, median of 2016–2025 (ERA5 via Open-Meteo). The soil reaches 10 °C 31 days before the last spring frost and 15 °C 10 days after it.

SoilDateAgainst the last spring frost
5 °Calready in the first week of January—
10 °C19 January31 days earlier
15 °C1 March10 days later
18 °C22 March31 days later

Frost dates near Fort Worth

Of the nearest cities on our list, the last spring frost ends earliest in Dallas (19 February) and latest in Oklahoma City (14 March).

CityDistanceLast spring frostFirst autumn frost
Dallas49 km19 February5 December
Lawton231 km1 March11 November
Austin276 km19 February13 December
Oklahoma City305 km14 March10 November
Shreveport332 km20 February9 December

Seeds, seedlings and markets in Fort Worth

Within 15 km of Fort Worth OpenStreetMap lists 4 garden centres, 3 farm-supply shops, 1 plant nursery and 1 farm shop (collected 20 October 2026). The nearest garden centre to the city centre is Calloway's Nursery, 6 km away.

Places: © OpenStreetMap contributors, ODbL.

What to grow at home in winter in Fort Worth

Frosts in Fort Worth usually come from about 30 November to about 19 February. These plants have indoor care in their Greenly cards and are harvested quickly, so they can be sown on a windowsill in winter.

Weather in Fort Worth by month

Average weather in Fort Worth over 2016–2025: the warmest month is July. Months that average 20 °C or more by day: March–November (20.3–35.7 °C). Months that average 30 °C or more by day: June–September (31.9–35.7 °C). No month averages below 0 °C at night; the coldest nights, in January, average 3.4 °C. About 1147 mm of rain falls in a year, on 102 days; May is the wettest month (174 mm) and July the driest (48 mm).

MonthDay, °CNight, °CRain, mmRainy days
January13.93.4647
February16.85.4898
March22.210.8989
April25.113.913310
May28.918.617413
June33.12310611
July35.725.4487
August35.225.3859
September31.921.8858
October2715.81287
November20.39.9706
December16.46.5677

Average of the daily highs and lows, rain per month and days with at least 1 mm (ERA5 via Open-Meteo, the same grid cell as the frost dates).

Planted in autumn

CropWhen to plant
Bearded Irisby 31 October
Crocusby 31 October
Daffodilby 31 October
Garlicby 31 October
Grape hyacinthby 31 October
Helleboreby 31 October
Hyacinthby 31 October
Lilyby 31 October
Ornamental onionby 31 October
Peonyby 31 October
Saffronby 31 October
Snowdropby 31 October
Tulipby 31 October
Wild garlicby 31 October

From a month before the first autumn frost, so the roots grow before winter, to the late-planting limit on each crop’s page (about two weeks before the ground freezes, by ten years of weather).