Texas Planting Guide: What to Grow and When

Texas gardeners face a challenge that most Americans never encounter: a state so large and climatically diverse that a planting guide written for one region can be dead wrong for another. The Panhandle gardener in Amarillo works with winters cold enough to kill citrus and springs so short that warm-season crops must go in immediately after the last frost. Meanwhile, a gardener 700 miles south in Corpus Christi can grow tomatoes in January and barely has a true winter at all.

This Texas planting guide cuts through that confusion. It covers every major region in the state — from the High Plains to the Rio Grande Valley — with specific frost dates, a month-by-month planting calendar, and a list of the best vegetables, herbs, and flowers that reliably perform across Texas climates. Whether you garden in Houston’s Zone 9a humidity or El Paso’s Zone 8b desert conditions, the framework here gives you an accurate, actionable seasonal plan.

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The single biggest shift for new Texas gardeners is accepting that the state operates on an inverted gardening calendar compared to northern states. Summer is not the primary vegetable season — it is survival season. Spring (February–May) and fall (September–December) are when Texas gardens genuinely thrive.

Texas Climate Zones: Know Your Region First

Texas spans USDA hardiness zones 6b through 10a, a range wider than most entire countries. Before any planting decision, knowing your zone determines which crops are realistic and when they go in the ground.

Six distinct gardening regions cover the state, each with different soil types, rainfall patterns, and temperature extremes:

• Panhandle and High Plains (Amarillo, Lubbock) — Zones 6b–7a. Cold winters, late springs, hot dry summers. Short frost-free window of roughly 170–195 days. Alkaline, caliche-heavy soils common.
• North Central Texas (Dallas-Fort Worth) — Zones 7b–8a. Cold snaps possible in winter, long hot summers, moderate rainfall. Last frost typically mid-March.
• East Texas (Tyler, Lufkin) — Zones 7b–8b. Highest rainfall in the state (40–55 inches annually), acidic sandy loam soils, humid. Conditions closest to the US Southeast.
• Central Texas (Austin, San Antonio) — Zones 8a–9a. Limestone-heavy alkaline soils, hot summers, mild winters. Two distinct growing seasons: spring and fall.
• Gulf Coast (Houston, Corpus Christi) — Zones 9a–9b. High humidity year-round, mild winters, extremely hot humid summers. Fungal disease pressure is significant.
• West Texas and Trans-Pecos (El Paso, Midland) — Zones 7b–8b. Low humidity, low rainfall (8–15 inches annually), alkaline soils, large day-night temperature swings. Desert gardening rules apply.
• Rio Grande Valley (McAllen, Brownsville) — Zones 9b–10a. Near-frost-free winters, year-round growing possible, tropical plants thrive. Unique in the continental US for citrus, avocado, and tropical fruit production.

Understanding how climate zones shift and what they mean for plant selection is the foundation of planning any Texas garden. Moving even 200 miles south in Texas can add 6–8 frost-free weeks to your season.

Texas Frost Dates by City

Last spring frost and first fall frost dates define your outdoor planting windows for warm-season crops. Texas A&M AgriLife Extension maintains historical frost data for locations across the state; the table below uses their average dates, rounded to the nearest week for planning purposes.

Source: Texas A&M AgriLife Extension average frost probability data. Frost dates indicate 50% probability; for frost-sensitive transplants, use the last frost date as an absolute minimum and watch the 10-day forecast.

A critical Texas planning note: late cold snaps are common through mid-April in North Texas and the Panhandle even after the average last frost date. “Blue northers” — fast-moving cold fronts that drop temperatures 30°F in a matter of hours — can arrive through late March in Dallas. Always have frost cloth ready until nighttime lows consistently hold above 45°F.

Spring Planting in Texas: February–May

Spring is the first of Texas’s two prime growing seasons. The timing differs dramatically by region: South Texas gardeners start warm-season crops in February while Panhandle gardeners are still waiting out frosts into mid-April.

February: Early Starters (South and Central Texas Only)

In zones 8b–10a (Austin south to the Valley), February is the beginning of the main vegetable season. Soil temperatures have recovered from any winter chill, and warm-season crops can go in the ground by month’s end.

• Direct sow tomatoes, peppers, squash, cucumbers, and beans outdoors (Houston, San Antonio, South Texas) from mid-February onwards.
• Start tomato and pepper transplants indoors under lights for North Texas and Panhandle gardeners — 6–8 weeks before last frost means starting in late February for Dallas, early March for Amarillo.
• Plant cool-season crops everywhere: lettuce, spinach, kale, broccoli, cabbage, and peas tolerate light frosts and can go in February statewide.
• Plant bareroot fruit trees and roses while they’re dormant; Texas A&M AgriLife recommends bareroot planting over container stock wherever available in winter and early spring.

March: The Main Planting Push Begins

March is the most active outdoor planting month for Central and North Texas gardeners. Last frost dates arrive in Dallas between March 13–18, opening the window for transplanting warm-season crops.

• Transplant warm-season vegetables outdoors (Austin, San Antonio, Houston) after any lingering cold fronts have passed — nighttime temperatures above 50°F are your signal.
• Direct sow warm-season crops in South Texas zones 9–10: beans, squash, cucumbers, and melons all establish fast in warming soils.
• Sow a second round of cool-season crops in Central and North Texas before heat sets in: succession planting lettuce and spinach every 2 weeks extends cool-season harvests into May.
• Plant potatoes statewide in March — Irish potatoes go in 2–4 weeks before last frost in most Texas regions. Texas A&M AgriLife recommends certified seed potatoes and planting when soil temperature reaches 45°F.
• Sow warm-season flowers outdoors (South Texas zones 9–10): zinnias, marigolds, sunflowers, and celosias all thrive from direct sowing in March.

April and May: Last Frost Passes Statewide

April brings the last frost to most of Texas. By mid-April, even Amarillo and Lubbock should be safe for warm-season transplants, though experienced Panhandle gardeners wait until May 1 to be certain.

• Transplant tomatoes, peppers, eggplant, basil, and sweet potatoes statewide after last frost has passed and soil is consistently warm.
• Direct sow warm-season crops: squash, cucumbers, beans, and melons go in the ground once soil temperature reaches 65°F (use an inexpensive soil thermometer for accuracy).
• Plant summer bedding plants: marigolds are especially valuable as companion plants alongside vegetables, deterring nematodes in Texas soils and repelling whiteflies — a key pest in the state.
• In South Texas, April–May marks the end of the best spring growing window before heat stress sets in. Harvest cool-season crops immediately and prepare beds for heat-tolerant succession crops.

Summer in Texas: June–August

Texas summers are genuinely difficult for most vegetables. Average daily highs in July exceed 95°F in Dallas, 98°F in San Antonio, and 100°F in parts of West Texas. Combined with high humidity on the Gulf Coast, these conditions exceed the heat tolerance threshold of most common vegetables, and gardeners who push summer planting hard often find yields disappointing.

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The Texas A&M AgriLife approach to summer is clear: focus on survival, heat-tolerant crops, and fall preparation rather than trying to replicate spring performance.

What Actually Grows in Texas Summers

A small list of vegetables genuinely handles Texas heat when mature plants are protected by mulch and consistent deep watering:

• Sweet potatoes — one of Texas’s best summer crops. They thrive in heat and require minimal attention once established. Plant slips in May and harvest October–November.
• Okra — performs well above 90°F and tolerates drought once established. One of the few vegetables that produces better in Texas summers than almost anywhere else in the US.
• Southern peas (black-eyed peas, crowder peas) — heat-tolerant legumes that fix nitrogen for the fall garden.
• Peppers — will survive summer but often stop setting fruit above 95°F. They recover in September when temperatures drop and produce a second heavy flush in fall.
• Herbs: basil (with afternoon shade in South Texas), rosemary, thyme, Mexican oregano — drought-tolerant herbs that handle heat well.

Summer Strategies: Mulch, Water, and Prepare

Three practices define successful Texas summer gardening. First, apply 3–4 inches of organic mulch (shredded wood chips, straw, or compost) to all vegetable beds. This keeps soil temperatures 10–15°F cooler at root level, reduces water needs by up to 50%, and is the single most effective summer heat management tool available to Texas gardeners.

Second, water deeply and infrequently rather than shallowly and often. Drip irrigation or soaker hoses at soil level are dramatically more effective than overhead watering in Texas summers, where overhead spray evaporates rapidly and creates humidity conditions that encourage fungal disease, especially on the Gulf Coast.

Third, use June and July to start fall transplants. Broccoli, cauliflower, kale, and cabbage started from seed in late July will be ready for transplanting into the garden in late August and early September, just as temperatures become hospitable.

Fall Planting in Texas: September–December

Fall is Texas’s most productive and often most overlooked growing season. As temperatures drop from their August peak, the cool-season vegetables that failed in summer suddenly thrive. Fall gardens consistently out-produce spring gardens in most of Texas because cool-season crops like broccoli, kale, carrots, and lettuce taste better and last longer when matured in cooling autumn weather.

The fall planting window runs from late August (for transplant preparation) through December in South Texas. In the Rio Grande Valley, cool-season crops can be planted nearly year-round with winter being the primary productive season for most vegetables.

August–September: Prepare and Plant the Fall Garden

• Direct sow fast-maturing crops the moment daytime highs drop below 90°F — typically early to mid-September in Dallas and Austin, late September in Houston: kale, Swiss chard, spinach, lettuce, radishes, turnips, mustard greens.
• Transplant fall broccoli, cauliflower, and cabbage from transplants started in late July.
• Sow carrots and beets directly — root vegetables need to be sown where they will grow and cannot be transplanted. Aim for soil temperatures below 80°F for good germination.
• Plant fall tomato transplants in early September for zones 8b–9a (Austin, San Antonio, Houston). Fall tomatoes can produce until first frost, which in Houston may not arrive until December. Use heat-tolerant varieties like Celebrity, Sweet 100, and Heatmaster.
• Check out our guide to seasonal planting strategies for timing tips across all US growing zones.

October–November: Peak Fall Harvest and Late Planting

• Continue sowing spinach, lettuce, arugula, Asian greens, and radishes — these fast-maturing crops can be succession sown every 2–3 weeks through October in most of Texas.
• Plant garlic from mid-October onwards. Texas A&M AgriLife recommends planting garlic 4–6 weeks before ground temperatures drop below 50°F, which in most of Texas means October–November planting. Softneck varieties (California Early, Inchelium Red) are generally more reliable in Texas than hardneck types.
• Plant spring-blooming bulbs: tulips in Texas require pre-chilling in the refrigerator for 6–8 weeks before planting (most of Texas lacks sufficient winter cold for natural vernalization). Plant pre-chilled tulip bulbs in November–December, pointing up, 6 inches deep. Daffodils, grape hyacinths, and alliums perform better without pre-chilling and can go in from late October.
• Plant cool-season annuals for winter color: pansies, snapdragons, alyssum, and stock are standard Texas fall bedding plants that bloom from October through March in most zones.

December–January: Winter Growing in South Texas

In zones 9a–10a (Houston, Corpus Christi, the Valley), December and January are productive growing months rather than rest periods. Cool-season crops sown in October are typically producing their best harvests, and new succession plantings of fast crops like lettuce and radishes can still go in.

• Continue harvesting and succession sowing cool-season crops (zones 9–10).
• Start onion transplants indoors for January planting — Texas A&M AgriLife recommends short-day onion varieties for most of Texas (Grano, Texas Early Grano, Contessa). These require specific day-length to form bulbs and are not interchangeable with the long-day varieties sold in northern states.
• In the Rio Grande Valley (zones 9b–10a), January is when tomato and pepper transplants go back in the ground for the spring crop.
• In North Texas and the Panhandle (zones 6b–7b), January is for planning, seed ordering, and cold-frame production of greens.

Texas Month-by-Month Planting Calendar

This calendar uses three zones as reference points: North Texas (Dallas, Zones 7b–8a), Central/South Texas (Austin–San Antonio, Zones 8b–9a), and Deep South Texas (Houston–Valley, Zones 9a–10a). Panhandle gardeners should add 3–4 weeks to all spring dates and can begin fall planting 2 weeks earlier than North Texas.

Top Plants for Texas Gardens

Success in Texas gardening comes down to variety selection as much as timing. Heat-tolerant, drought-adapted varieties consistently outperform standard offerings in Texas summers. This table covers the most reliable performers across Texas regions.

Common Texas Gardening Challenges

Alkaline Caliche Soil

Much of Central, West, and South Texas has alkaline soil underlain by caliche — a calcium carbonate hardpan layer that blocks drainage and root penetration. pH levels of 7.5–8.5 are common, causing iron chlorosis (yellowing leaves) in many plants that prefer slightly acidic conditions.

Texas A&M AgriLife recommends raised beds as the most practical solution for home gardeners in affected areas. Fill raised beds 12–18 inches deep with a mix of topsoil, compost, and expanded shale to create a root environment independent of the native soil. For in-ground beds, amending with sulfur at planting time and using chelated iron fertilizers helps manage pH-related deficiencies.

Summer Pest Pressure

Three pests cause the most Texas vegetable garden damage: squash vine borers (devastating to summer squash in May–July), whiteflies (endemic on the Gulf Coast and South Texas), and soil nematodes (root-knot nematodes damage roots of tomatoes, peppers, and carrots, particularly in East Texas’s sandy soils).

For squash vine borers, plant succession crops of squash rather than depending on a single spring planting, and cover vines with row fabric until flowering. For nematodes, planting French marigolds (<em>Tagetes patula</em>, not African marigolds) as interplanted companions reduces soil nematode populations; this is one of the few cases where companion planting has solid research backing behind it. See our full guide on companion planting strategies for more evidence-based pairing combinations.

Fungal Disease in Humid Regions

Houston, East Texas, and Gulf Coast gardeners face fungal disease pressure — particularly early blight, powdery mildew, and Southern blight — that inland gardeners rarely encounter at the same severity. The combination of high humidity, warm nights, and overhead irrigation creates ideal conditions for fungal pathogens.

The most effective strategies are cultural rather than chemical: space plants to maximize air circulation, water at soil level with drip or soaker irrigation, avoid wetting foliage, remove and discard (not compost) diseased leaves, and mulch to reduce soil splash. Disease-resistant tomato varieties (Celebrity, Juliet, Mountain Merit) are worth seeking specifically in high-humidity zones.

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Frequently Asked Questions

When should I start a vegetable garden in Texas?

The answer depends on your location. In South Texas and Houston (zones 9–10), the cool-season garden starts in September–October and runs through March, with warm-season planting beginning in February. In Central Texas (Austin, San Antonio), the spring warm-season garden starts in late February–March, and the fall garden — which is often more productive — begins in late August. In Dallas and North Texas, late March is the realistic start for warm-season crops outdoors. In the Panhandle, wait until after April 15 for any frost-sensitive transplants.

What vegetables are easiest to grow in Texas?

For spring: tomatoes (with heat-tolerant varieties), peppers, squash, and green beans are reliable producers. For summer: sweet potatoes and okra are genuinely foolproof and actually perform better in Texas heat than most other US climates. For fall: kale, broccoli, Swiss chard, lettuce, and carrots all thrive in Texas autumn conditions and are often easier to grow than their northern counterparts because the fall season is long and mild.

Can I grow a year-round garden in Texas?

In South Texas (zones 9b–10a), year-round gardening is practical. The gardening year is essentially inverted compared to northern states — the productive cool-season window runs October through April, with summer being the rest period. In Central Texas, two distinct growing seasons (spring and fall) cover roughly 7–8 months of active production with strategic summer gap-filling using heat-tolerant crops. In North Texas and the Panhandle, the outdoor growing season covers approximately April through November with indoor seed-starting extending the effective season by another 4–6 weeks.

Sources

• Texas A&M AgriLife Extension — Vegetable Gardening Resources
• Texas A&M AgriLife Extension — Vegetable Gardening for Texas

References

1. Texas A&M AgriLife Extension — Vegetable Gardening for Texas
2. Texas A&M AgriLife Extension — Home Vegetable Gardening in Texas