Texas fall vegetable gardening is productive in ways most northern gardeners don't expect. While summer heat (consistently above 95°F in most of the state) limits summer production to a narrow window, the fall season from August through December offers excellent conditions for both warm-season and cool-season crops.
Per Texas A&M AgriLife Extension, fall planting is often more productive than spring planting in most of Texas because temperatures moderate reliably from September onward, fall insects are typically less severe than spring/summer populations, and many cool-season crops overwinter in zones 8–9.
I do not garden in Texas. This guide is sourced from Texas A&M AgriLife Extension publications.
Texas Regional Zones for Vegetable Timing
Per Texas A&M AgriLife Extension:
| Region | Avg First Fall Frost | Fall Tomato Plant Window | Cool-Season Start |
|---|---|---|---|
| North Texas (Dallas, Amarillo) | October 25–November 15 | August 1–15 | September 15 |
| Central Texas (Austin/San Antonio) | November 15–December 1 | August 15–September 1 | October 1 |
| East Texas | November 15–December 1 | August 1–15 | September 15 |
| South Texas (San Antonio south) | December 1–January 1 | September 1–15 | October 1–15 |
| Rio Grande Valley | Frost-free or January | Year-round warm season | October–November cool season |
Fall Warm-Season Crops
Tomatoes — the most important fall crop
North TX: Transplant August 1–10 | Central TX: Transplant August 10–20 | South TX: Transplant August 20–September 1
Per Texas A&M AgriLife Extension, fall tomatoes are planted from transplants in early-to-mid August to allow the plants to establish before the intense heat breaks and to produce fruit in September–October before first frost. Short-season varieties are critical:
- 'Celebrity' (70 days) — excellent disease resistance for Texas conditions
- 'Sweet 100' or 'Sweet Million' (cherry, 60 days) — faster maturity
- 'Heatmaster' — bred for Texas summer/fall heat
Do not direct-seed fall tomatoes — transplants give you 3–4 weeks head start, which is critical for maturity before frost.
Peppers
North TX: Plant August 1 | Central/South TX: Plant August 1–15
Per Texas A&M AgriLife Extension, fall peppers planted in early August often produce their best crop in September–October as temperatures moderate. They tolerate Texas fall heat better than tomatoes. Banana peppers, jalapeños, and cayenne are especially productive in Texas fall conditions.
Southern Peas (Cowpeas)
Statewide: Plant August 1–September 1
Per Texas A&M AgriLife Extension, Southern peas (Vigna unguiculata — blackeye peas, purple hull peas) are warm-season crops that thrive in Texas's late-summer heat. Direct sow in early August, harvest in September. Extremely heat-tolerant. 'Pinkeye Purple Hull' and 'Mississippi Cream' are common Texas varieties.
Summer Squash (Second Planting)
Statewide: Plant August 1–15
Per Texas A&M AgriLife Extension, a second planting of summer squash in early August produces well in September–October in Texas. The first summer planting typically declines from heat, drought stress, and squash bugs in July; a fresh planting in August avoids peak insect pressure. Direct sow when soil is still above 65°F.
Fall Cool-Season Crops
Broccoli and Cabbage
North TX: Transplant September 15–October 1 | Central TX: Transplant October 1–15 | South TX: Transplant October 15–November 1
Per Texas A&M AgriLife Extension, fall broccoli and cabbage are primary Texas cool-season crops. Start transplants indoors 4–6 weeks before the outdoor transplant date or purchase transplants from garden centers in September. 'Packman' and 'Marathon' are standard fall broccoli varieties for Texas.
Root Vegetables
Statewide: Direct sow September 15–November (varies by zone)
Per Texas A&M AgriLife Extension:
- Carrots: Direct sow when soil cools below 80°F. 'Danvers 126', 'Chantenay Red Core', 'Nantes'.
- Beets: September 15–November 1. 'Detroit Dark Red', 'Chioggia'.
- Turnips: September–October. Quick-maturing (45 days); can be succession-sown.
- Radishes: Sow every 2 weeks September–November.
Greens
Per Texas A&M AgriLife Extension, Texas is one of the best states for cool-season greens because the long mild fall extends the harvest:
- Spinach: Direct sow September–November; overwintering possible in zones 8–9
- Kale: Plant September–November; survives winter in zones 7b–9
- Collards: Plant September–November; a Texas fall staple
- Lettuce: Direct sow or transplant September–November
- Swiss chard: September–November; tolerates light frost
Texas Soil Preparation for Fall
Per Texas A&M AgriLife Extension, Texas soils vary dramatically:
- Black clay (Blackland Prairie): Work when slightly moist, not wet; needs compost for drainage
- Sandy loam (East Texas, Sandy areas): Needs compost for moisture retention and nutrients
- Calcareous limestone (Hill Country): pH 7.5–8.5; amend with sulfur and compost; choose alkaline-tolerant varieties
- Coastal clay (Gulf Coast): Heavy drainage problems; raised beds recommended
Per Texas A&M, add 3–4 inches of compost before every planting and incorporate to 6–8 inches. Texas soils are highly variable but consistently benefit from organic matter additions.
Frequently Asked Questions
When do I plant garlic in Texas? Per Texas A&M AgriLife Extension, garlic is planted in October–November in most Texas zones, 2–3 weeks before the first frost in North Texas, or November–December in South Texas. Softneck varieties (Artichoke group, Silverskin group) perform better than hardneck types in Texas's mild winters, which may not provide sufficient chilling for hardneck types to bulb properly.
Can I grow tomatoes year-round in South Texas? Per Texas A&M AgriLife Extension, in the Rio Grande Valley (zone 9b–10a), tomatoes can be grown almost year-round with the exception of the hottest summer months (July–August). Two main planting windows: February–March for spring harvest, and August–September for fall harvest extending into December. Heat-tolerant cultivars like 'Heatmaster' and 'Solar Fire' are important.
Which Texas pests are specific to the fall garden? Per Texas A&M AgriLife Extension, the most significant fall garden pests in Texas include: aphids on brassicas (increasing in cooler fall weather), cabbage loopers and imported cabbageworm, whiteflies on warm-season fall crops, and thrips. Fall gardens often have lower overall pest pressure than summer plantings because many pest populations decline with cooling temperatures.
What I'd do differently
I don't garden in Texas — Long Island zone 7a is about as different from Dallas as you can get and still be in the US. What I take from the AgriLife Extension literature: the single biggest mistake Texas fall gardeners make is missing the August transplanting window for tomatoes. Everyone thinks of tomatoes as a spring crop, so the August planting feels wrong. But in North Texas, if you miss August 15, you are not getting fall tomatoes. The frost arrives before a September-started plant matures.
The second mistake: planting the same broccoli and cabbage varieties that work in the North. 'Packman' and 'Marathon' are Texas-tested; generic garden center brassica transplants without variety labels are a gamble in Texas heat. Buy named varieties from transplant sources that publish trial data.
Sources
- Texas A&M AgriLife Extension — Texas Vegetable Planting Guide
- Texas A&M AgriLife Extension — Fall Vegetable Gardening