Texas Gardening: Your Guide to Planting in August
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Why August Is a Key Month for Texas Gardening
August in Texas can feel like a furnace. But don’t let that heat fool you! This month offers a golden opportunity for gardeners. It’s prime time for planting a variety of vegetables and flowers that thrive in the warm climate. Whether you’re a seasoned pro or just starting, understanding what to plant during this time can make all the difference in your garden’s success.
August may feel like the middle of summer in Texas, but it is one of the most important months for starting a productive fall garden. Warm-season vegetables can still be planted in many areas, while cool-season crops should be started from seed for transplanting when temperatures begin to fall.
The best vegetables to plant in Texas during August include bush beans, southern peas, cucumbers, summer and winter squash, carrots, beets and warm-season transplants such as peppers and eggplants. Gardeners can also start broccoli, cabbage, cauliflower, kale, collards and other cool-season crops in protected seed trays.
Your exact planting dates depend on where you live. North Texas gardeners generally plant fall crops earlier because the first frost arrives sooner. Central Texas, including Montgomery, Austin and San Antonio, has a longer planting window. South Texas and the Gulf Coast can often wait until late August or September for heat-sensitive crops.
Quick Answer: What Can You Plant in Texas in August?
| Plant now outdoors | Start in protected seed trays | Plant as transplants |
|---|---|---|
| Bush beans | Broccoli | Tomatoes |
| Southern peas | Cabbage | Peppers |
| Cucumbers | Cauliflower | Eggplant |
| Summer squash | Kale | Broccoli in North Texas |
| Winter squash | Collards | Cabbage in North Texas |
| Carrots | Lettuce late in the month | Herbs |
| Beets | Swiss chard | |
| Mustard greens late in the month | Brussels sprouts | |
| Turnips late in the month | Artichokes in Central Texas |
Planting dates vary by region and weather. During extreme heat, start small seeds inside a greenhouse with shade cloth, in an air-conditioned seed-starting area or beneath bright grow lights.
Best Vegetables to Plant in August in Texas
Bush Beans
Bush beans grow quickly and can produce before the first frost. Direct-sow them in well-drained soil and choose a variety with a short maturity period. Keep the seedbed evenly moist during germination, especially when afternoon temperatures exceed 95°F.
North Texas gardeners should plant early in August. Central and South Texas gardeners usually have a longer window extending into late August or early September.
Southern Peas
Black-eyed peas, purple hull peas and cream peas tolerate Texas heat better than many vegetables. They are reliable choices for early and mid-August planting in warm regions. Plant them in full sun and avoid excessive nitrogen, which can produce leaves instead of pods.
Cucumbers
Fast-maturing cucumbers can provide a fall harvest when planted in August. Select disease-resistant varieties and grow vines vertically to improve airflow. In Central and South Texas, afternoon shade can reduce heat stress while young plants become established.
Summer and Winter Squash
Summer squash develops quickly enough for a fall crop in much of Texas. Winter squash needs more time, so choose a short-season variety and plant early in the month. Watch for squash vine borers, squash bugs and powdery mildew.
Carrots
Carrots are an excellent fall crop, but their small seeds require consistent moisture to germinate in hot soil. Texas A&M notes that carrots are planted from August through November in different parts of the state.
Sow seeds shallowly in loose soil and cover the row with a thin layer of compost or temporary shade fabric. Remove the covering as soon as seedlings emerge.
Beets
Begin planting beets in August where the weather is starting to moderate, particularly in North Texas. In hotter areas, wait until late August or early September. Both the roots and leaves are edible, making beets especially productive in small gardens.
Peppers and Eggplants
Healthy pepper and eggplant transplants can establish in August and produce through fall. Existing spring plants may also recover and begin setting fruit again as nighttime temperatures decline.
Give new transplants temporary afternoon shade for approximately one week and keep their root zones consistently moist, not waterlogged.
Fall Tomatoes
August is the final practical window for fall tomato transplants in many parts of Texas. Choose vigorous, heat-tolerant plants and smaller-fruited varieties that mature quickly. North Texas gardeners generally need to transplant earlier, while South Texas gardeners have more time.
Use 30% to 50% shade cloth during establishment, mulch the root zone and protect flowers from extreme afternoon heat. Tomatoes often begin setting fruit more reliably once nighttime temperatures cool.
Cool-Season Crops to Start in August
August is the time to start many fall vegetables, even when it is still too hot to plant them directly in the garden.
Start these crops in seed trays:
- Broccoli
- Cabbage
- Cauliflower
- Brussels sprouts
- Kale
- Collard greens
- Swiss chard
- Lettuce
- Parsley
- Artichokes in suitable regions
Keep seed trays out of direct afternoon sun. Most cool-season seeds germinate more successfully when their growing medium stays below the extreme temperatures common in an unshaded Texas greenhouse.
Once seedlings develop several true leaves, gradually expose them to outdoor conditions before transplanting. This process, called hardening off, reduces transplant shock.
August Planting by Texas Region
North Texas
Dallas, Fort Worth, Amarillo and surrounding areas have a shorter fall growing season. Plant fast-growing fall crops early and pay close attention to days to maturity.
Good August choices include:
- Bush beans
- Cucumbers
- Summer squash
- Carrots
- Beets
- Broccoli and cabbage transplants
- Kale, collards and Swiss chard
- Turnips and mustard greens later in August
Central and East Texas
Gardeners around Austin, Waco, College Station, Montgomery and much of East Texas can plant warm-season crops during early August and begin transitioning to fall crops later in the month.
Good August choices include:
- Southern peas
- Bush beans
- Cucumbers
- Summer and winter squash
- Fall tomato transplants
- Pepper and eggplant transplants
- Carrots and beets later in the month
- Broccoli, cabbage, cauliflower, kale and collards in seed trays
Houston and the Gulf Coast
Houston-area gardeners must manage heat, humidity and heavy rainfall. Warm-season crops remain suitable, but many cool-season crops should be started under protection and transplanted later.
Good August choices include:
- Southern peas
- Bush beans
- Cucumbers
- Squash
- Peppers
- Eggplants
- Fall tomatoes
- Broccoli, cabbage, kale and collards in cooled or shaded seed trays
- Carrots and beets near the end of the month or when soil temperatures moderate
South Texas and the Rio Grande Valley
South Texas has the longest warm season. Continue planting heat-tolerant vegetables while preparing cool-season seedlings for later transplanting.
Good August choices include:
- Southern peas
- Peppers
- Eggplants
- Cucumbers
- Squash
- Bush beans
- Tomatoes where local timing permits
- Cool-season crops started under shade for fall planting
What to Plant in a Texas Greenhouse in August
A greenhouse makes August planting more predictable, but it must be managed carefully. An unventilated greenhouse can become much hotter than the outdoor air and damage seeds, flowers and young plants.
Use your greenhouse in August to:
- Start broccoli, cabbage, cauliflower, kale and collard seedlings.
- Protect young transplants from heavy rain and pests.
- Grow herbs beneath filtered light.
- Establish fall tomatoes, peppers and eggplants.
- Prepare succession plantings for continuous fall harvests.
For summer greenhouse growing in Texas, prioritize ventilation, shade and airflow. A 40% to 50% shade cloth is often useful during the hottest period, although the ideal density depends on the crop, greenhouse glazing and local conditions. Open roof vents and doors, run circulation or exhaust fans and water early in the morning.
Do not automatically water every plant on the same schedule. Check the growing medium first. Containers can dry rapidly, but continually saturated soil encourages root disease.
August Herbs to Plant in Texas
Heat-tolerant herbs can still grow well in August. Consider planting:
- Basil
- Oregano
- Thyme
- Rosemary
- Sage
- Mint in containers
- Chives
- Parsley from protected seed starts
- Cilantro late in the month or once temperatures cool
Basil appreciates warmth but needs consistent water. Rosemary, oregano and thyme prefer excellent drainage and should not remain wet for long periods.
Flowers to Plant in August in Texas
Flowers support pollinators and make a vegetable garden more productive and attractive. Depending on your region, August options include:
- Marigolds
- Zinnias
- Sunflowers early in the month
- Celosia
- Gomphrena
- Cosmos
- Fall wildflower seeds toward the end of the month
- Cool-season flower seeds started under protection
How to Protect New Plants From August Heat
Plant at the Right Time of Day
Transplant in the evening or on an overcast day. This gives plants time to begin recovering before the next period of intense sunlight.
Use Temporary Shade
Provide shade for new seedlings and transplants during the hottest part of the afternoon. Remove or reduce it gradually as plants become established.
Water Deeply
Water early in the morning so moisture reaches the root zone before temperatures peak. Frequent shallow watering encourages shallow roots. Seedbeds are the exception because they must remain consistently moist during germination.
Add Mulch
Apply two to three inches of clean organic mulch around established plants while keeping it away from the stems. Mulch moderates soil temperature, slows evaporation and suppresses weeds.
Watch for Pests
Inspect leaf undersides for spider mites, whiteflies, aphids, caterpillars and squash bugs. Early detection is easier than controlling a large infestation.
Simple August Planting Plan for Texas Gardeners
Early August: Plant bush beans, southern peas, cucumbers, squash and fall vegetable transplants appropriate for your region.
Mid-August: Start broccoli, cabbage, cauliflower, kale, collards and other cool-season seedlings under shade or in a temperature-controlled area.
Late August: Begin direct-sowing carrots, beets, turnips, mustard greens and other fall crops as local soil temperatures moderate.
Repeat small plantings every 10 to 14 days when space and weather allow. Succession planting extends the harvest and reduces the risk of losing an entire crop to one heat wave or storm.
Frequently Asked Questions
Is August too late to plant a garden in Texas?
No. August begins the fall gardening season across much of Texas. Fast-growing warm-season vegetables can still produce before frost, while cool-season vegetables can be started for autumn and winter harvests.
Can I plant tomatoes in Texas in August?
Yes, in many regions, but use healthy transplants rather than seeds. Choose fast-maturing or smaller-fruited varieties and provide temporary shade while the plants establish. Exact timing depends on your expected first frost.
What vegetables tolerate Texas heat in August?
Southern peas, peppers, eggplants, okra and some squash varieties tolerate heat relatively well. Even heat-tolerant plants require consistent moisture when newly planted.
When should I start broccoli for a Texas fall garden?
Many Texas gardeners start broccoli in protected seed trays during August and transplant it after temperatures begin to cool. North Texas gardeners generally start and transplant earlier than gardeners along the Gulf Coast or in South Texas.
Can lettuce be planted in August in Texas?
Lettuce seeds struggle in hot soil. Start them in a cool, protected place late in August or wait until outdoor temperatures moderate. Heat-tolerant varieties and afternoon shade improve the chance of success.
Does a greenhouse help with fall planting in Texas?
Yes. A properly ventilated and shaded greenhouse protects seedlings from heavy rain, pests and rapid weather changes. It also provides an organized space for starting fall crops before outdoor conditions become suitable.
Grow More of Your Own Food This Fall
August is not the end of the Texas growing season—it is the beginning of the next one. With thoughtful crop selection, heat protection and succession planting, your garden can continue producing through fall and, in many parts of Texas, into winter.
A durable polycarbonate greenhouse gives Texas gardeners more control over seed starting, rain, wind, pests and seasonal temperature changes. Explore greenhouse options at House Your Greens and start building a more productive year-round garden.
Consider a Greenhouse
If you want to extend your growing season or protect your plants from extreme weather, consider investing in a greenhouse. A well-constructed greenhouse can provide a controlled environment, ideal for nurturing young plants. For tips on choosing the right model, check out Best Greenhouse for Texas: How to Choose the Right Model.
Conclusion
August is not just a month of heat; it’s a fantastic time for planting in Texas. With the right choices and a little care, you can create a lush garden that will bring joy and beauty to your home. So grab your tools, select your seeds, and enjoy the gardening adventure ahead. Happy planting!
By House Your Greens Editorial Team · Updated 2026-08-01