Plant tomatoes in Texas between late February and mid-March for spring harvest, or in late July and August for fall harvest
Texas spans three hardiness zones and has two distinct growing windows for tomatoes. The spring window opens after your last frost date — which ranges from mid-February in South Texas to mid-April in the Panhandle — and closes when sustained heat above 95°F arrives, usually by late June. The fall window opens in late July when temperatures begin to drop and runs until the first hard freeze, typically in November or December depending on where you live.
Most Texas gardeners get better results from fall planting than spring planting. Spring tomatoes race against the heat; fall tomatoes have cooling weather on their side and produce fruit right into winter in many parts of the state. If you plant only once a year, fall is the safer choice.
Key Takeaways
- Your last spring frost date determines when it is safe to plant seedlings outdoors; this date ranges from February 15 in the Rio Grande Valley to April 15 in the Texas Panhandle.
- Fall planting in late July through August gives tomatoes three to four months of cooling weather and typically produces more fruit than spring planting in Texas.
- Tomatoes stop setting fruit when nighttime temperatures stay above 75°F, so spring plantings often fail to produce before heat arrives.
- Determinate varieties (bush types that ripen all at once) work better for fall planting; indeterminate varieties (vining types) suit spring planting if you have shade cloth ready.
Spring Planting: After Your Last Frost Date
The spring window is short in Texas because heat arrives early. You can plant seedlings outdoors after your last frost date, but you need to know the exact date for your location. The Texas A&M AgriLife Extension publishes frost date maps by county. If you live in Austin, your last frost date is around April 10; in Dallas, April 15; in Houston, March 20; in San Antonio, March 15; in El Paso, April 20; and in Amarillo, May 10.
Start seeds indoors six to eight weeks before that date if you want to grow from seed. Most home gardeners buy seedlings from a nursery instead, which cuts two months off the timeline. Plant seedlings in full sun — at least six hours daily — and water deeply after planting. Tomatoes need consistent moisture; let the soil dry slightly between waterings, but never let it crack.
Spring tomatoes in Texas face a hard important date: when nighttime temperatures stay above 75°F, tomato flowers stop setting fruit. This happens in late May or early June across most of Texas. Any flowers that form after that point will drop without producing fruit. You will harvest what set before the heat, then the plant will go dormant or decline until fall.
Fall Planting: Late July Through August
Fall planting is the Texas tomato season most gardeners should prioritize. Plant seedlings in late July or early August — not from seed, because seedlings take too long to mature. You need plants that are already four to six weeks old and ready to flower within a month of going in the ground. Nurseries often run short of tomato seedlings in summer, so order ahead or grow your own indoors in June.
Fall-planted tomatoes have three to four months of cooling weather ahead of them. Nighttime temperatures drop below 75°F by mid-September in most of Texas, which means flowers will set fruit reliably. The plants will produce steadily through October and into November, and in South Texas and the Gulf Coast, they may keep producing into December or even January if the winter is mild.
Fall tomatoes also avoid the spring pests — spider mites and whiteflies thrive in hot, dry air — and they face fewer fungal diseases because humidity drops as the season progresses. The trade-off is that you must watch for the first hard freeze. Once nighttime temperatures drop to 28°F or below, the plants will die. Harvest everything that is ripe or close to ripe before that date arrives.
Regional Timing Across Texas
| Region | Last Spring Frost | First Fall Frost | Best Planting Window |
|---|---|---|---|
| Rio Grande Valley (Brownsville, McAllen) | February 15 | December 15 | Late July through August; spring planting works but heat arrives fast |
| South Texas (Corpus Christi, Kingsville) | March 1 | December 1 | Late July through August for best results |
| Central Texas (Austin, San Antonio) | March 15 | November 15 | Late July through August; spring planting possible with shade cloth |
| Gulf Coast (Houston, Galveston) | March 20 | November 20 | Late July through August; high humidity favors fall planting |
| North Texas (Dallas, Fort Worth) | April 15 | November 1 | Late July through August; spring window is longer but still risky |
| East Texas (Tyler, Longview) | April 10 | November 5 | Late July through August; humidity and disease pressure favor fall |
| West Texas (El Paso) | April 20 | October 30 | Late July through August; spring window is longer but heat is intense |
| Panhandle (Amarillo, Lubbock) | May 10 | October 10 | Spring planting after May 10; fall window is short |
Choosing Varieties for Each Season
Determinate varieties (bush types that ripen most fruit within two to three weeks) work best for fall planting because they produce heavily before the first freeze arrives. 'Roma', 'San Marzano', 'Mountain Magic', and 'Defiant PhR' are determinate types bred for disease resistance and are widely available in Texas nurseries. Plant them in late July or early August, and they will produce a concentrated harvest in October and November.
Indeterminate varieties (vining types that produce fruit continuously until frost) suit spring planting only if you can shade them when heat arrives. 'Sungold', 'Cherokee Purple', and 'Brandywine' are popular indeterminate types, but they struggle in Texas spring heat without protection. If you plant them in spring, install shade cloth (30 to 50 percent shade) by late May to keep fruit from sunscald and to extend the flowering window.
For fall planting, stick with determinate or semi-determinate varieties. They are bred to finish their crop before cold weather, and they do not need the long, uninterrupted growing season that indeterminate types demand.
Soil Preparation and Watering for Texas Heat and Cold
Texas soil is often alkaline and compacted. Before planting, work in two to three inches of compost or aged manure to improve drainage and lower pH slightly. Tomatoes prefer soil with a pH between 6.0 and 6.8; if your soil tests above 7.0, sulfur can lower it, but compost is faster and easier for home gardeners. Add a balanced fertilizer — something like 10-10-10 — at planting time, then switch to a lower-nitrogen formula (like 5-10-10) once flowers appear to avoid excessive leaf growth.
Water deeply and consistently. In spring, when temperatures climb, tomatoes may need water every two to three days. In fall, as temperatures drop, you can stretch watering to every four to five days. Mulch around the base with two inches of wood chips or straw to keep soil temperature steady and reduce watering frequency. Never let the soil dry out completely, and never leave it waterlogged — both stress the plant and invite disease.
Protecting Spring Tomatoes from Late Freezes
If you plant in spring and a late freeze is forecast after your seedlings are in the ground, cover them with frost cloth, old sheets, or row covers the night before. Leave the covers on until the temperature rises above 50°F the next morning. This works for one or two unexpected freezes, but if your area has a history of late freezes after your frost date, wait an extra week or two before planting.
Spring freezes are less common than they once were, but they still happen. In 2021, a hard freeze in mid-February killed newly planted tomatoes across Central and South Texas. Checking your local frost date is not a may provide — it is a statistical average. If you plant right at the frost date, you are taking a small risk. Waiting one to two weeks after the date gives you a safety margin.
Frequently Asked Questions
Can I plant tomatoes in winter in Texas?
No. Tomatoes are killed by frost and cannot survive freezing temperatures. In South Texas and the Rio Grande Valley, you can plant in late July and harvest into December or January, but once the first hard freeze arrives (28°F or below), the plants will die. Harvest all ripe and near-ripe fruit before that date.
What if I miss the fall planting window?
If you miss late July and August, wait until spring. Fall planting is better in Texas, but spring planting is still possible if you choose heat-tolerant varieties, plant early enough to get fruit before heat arrives, and use shade cloth in late May. Determinate varieties are more forgiving in spring than indeterminate types.
Do I need to start seeds indoors or can I direct seed?
Direct seeding (planting seeds straight in the ground) takes too long in Texas. Seeds take 60 to 80 days to reach flowering size, and by then spring heat has usually arrived. Buy seedlings from a nursery instead, or start seeds indoors in May for fall planting or in January for spring planting.
How much sun do tomatoes need in Texas?
Tomatoes need at least six hours of direct sun daily, and eight to ten hours is better. In spring, full sun is fine. In summer and early fall, if you are growing tomatoes during the hottest months, afternoon shade (from 2 to 5 p.m.) can help prevent sunscald on fruit and heat stress on leaves. In fall, full sun is ideal again.
What is the difference between a frost date and a freeze date?
A frost date is when the temperature drops to 32°F; a freeze is 28°F or below. Tomatoes are killed by frost, so your last spring frost date is the earliest safe planting date. A hard freeze in fall (28°F or lower) will kill the entire plant. Your first fall frost date tells you when frost is possible, but the first hard freeze is what actually ends the season.