When to Plant Tomatoes in Texas (It Is Earlier Than You Think)

Most new Texas gardeners plant tomatoes too late. Northern garden books say to wait until all danger of frost is long past and the soil is thoroughly warm, which translates to May planting, and a May-planted tomato in most of Texas grows into a handsome green bush that never hands you a ripe fruit. Tomatoes quit setting fruit once daytime highs push into the 90s and nights stay warm, and across much of the state that weather arrives by mid June.

The real deadline is not the last frost. It is the first stretch of serious heat, and you count backward from that. In most of Texas the spring tomato window opens within a week or two of the average last frost, and along the Gulf Coast and in the Rio Grande Valley it opens in February.

The Heat Deadline Nobody Mentions

Tomato pollen loses viability in sustained heat. Once days run above roughly 90 degrees and nights hold above the mid 70s, blossoms drop without setting fruit, no matter how healthy the plant looks. A transplant needs about six to eight weeks in the ground before it starts setting fruit in earnest, so the arithmetic is unforgiving: a plant set out in mid March in Central Texas flowers in late April, sets fruit through May, and ripens a crop before the shutdown. One set out in early May barely gets started before the blossoms begin dropping.

This is why extension agents across the state preach early planting. You are not trying to grow tomatoes through a Texas summer. You are trying to sneak a full crop into the mild eight or ten weeks between the last frost and the first heat wave.

Planting Dates by Zone

Under the 2023 USDA map, Texas runs from zone 6b in the far northern Panhandle down to 10b at the southern tip of the coast. Anchor your planting to your zone's average last spring frost, plant at or shortly after it, and keep frost cloth within reach for the first few weeks.

• Zones 10a and 10b (McAllen, Brownsville, Laredo, the Rio Grande Valley): frost is rare; set transplants out from late January into February.
• Zone 9b (Corpus Christi, Victoria): last frost late January to mid February; plant from mid February through early March.
• Zone 9a (Houston, San Antonio, Beaumont, upper Gulf Coast): last frost mid February to early March; plant late February through mid March.
• Zone 8b (Austin, Waco, San Angelo, College Station, the Hill Country): last frost early to mid March; plant mid to late March.
• Zone 8a (the DFW area, Abilene, Tyler, Texarkana): last frost mid to late March; plant late March into the first week of April.
• Zone 7b (Lubbock, Wichita Falls): last frost late March to early April; plant in early to mid April.
• Zone 7a (Amarillo and the central Panhandle): last frost early to mid April; plant mid to late April.
• Zone 6b (far northern Panhandle): last frost mid to late April; plant late April to early May. Cooler summer nights up there take some pressure off the heat deadline.

Varieties That Beat the Clock

Variety choice matters as much as timing. Look for early or midseason maturity, roughly 65 to 75 days from transplant, and for hybrids with a reputation for setting fruit in warm weather. The 85-day giant beefsteaks that do fine in Ohio usually run out of calendar here.

• 'Celebrity': the dependable determinate standby, widely sold across Texas, with strong disease resistance.
• 'Early Girl': one of the fastest slicers to ripen, a good hedge in short-window years.
• 'Tycoon': a heat-tolerant hybrid that has become a favorite with Texas growers.
• 'Sun Gold' and 'Juliet': cherry and grape types keep setting fruit after the big slicers give up, often well into summer.
• 'Cherokee Purple': the heirloom worth the gamble, but plant it on the early edge of your window.
• Roma and other paste types: sturdy producers for sauce and canning in the same 70-something-day range.

Protecting February and March Transplants

Planting near the frost date means accepting some cold-night duty. Harden transplants off for several days outdoors before planting, then set them deep, burying the stem up to the first true leaves; tomatoes grow roots all along a buried stem and anchor faster for it.

Keep protection simple and close at hand. Frost cloth draped over plants handles a light frost; an overturned five gallon bucket works for a plant or two; water-filled plant protectors let coastal and southern gardeners push a week or two earlier still. An unprotected tomato dies at even a brief freeze, so watch the ten day forecast rather than the calendar. In the Panhandle and West Texas, a windbreak of some kind earns its keep as much as the frost cloth does.

Round Two: Fall Tomatoes

Texas gives you a second chance most states never get. Transplants set out from late June through mid July, kept alive through the worst of summer with shade cloth and steady water, begin setting fruit as soon as September nights cool, then ripen through the long mild fall.

First frost dates make the case. The DFW area in zone 8a typically holds until mid November, Austin and the Hill Country in 8b until late November, and Houston and San Antonio in 9a until early or mid December, which leaves ample ripening time. The Panhandle is the exception; with first frosts arriving from mid October in zone 6b, a fall crop up there is a genuine gamble.

Rules of Thumb

Local garden centers are their own planting calendar: when the tomato racks fill up with transplants, the window in your area is opening. A few rules cover the rest.

• Plant within two weeks of your average last frost, with frost cloth ready.
• Buy transplants unless you started seed indoors six to eight weeks ahead.
• For spring, choose varieties that mature in 75 days or less.
• Mulch deeply and switch to drip or soaker watering as heat builds.
• Mark early July on the calendar for the fall crop.