What to Plant in August in North Texas (Your Fall Garden Starts Right Now)
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August in North Texas is not the month most people want to think about gardening. The heat is relentless. The afternoons are brutal. And yet August is one of the most important gardening months of the entire year in this state, because what you do right now determines whether you have a fall garden worth harvesting or bare, empty beds in October.
Here is the reality of Texas gardening: your fall season does not start when it starts to cool off. It starts in the heat of August, when you get seeds in the ground and transplants established before temperatures moderate enough for cool-season crops to thrive. If you wait until September feels manageable, you have already missed your best window for several key crops. The gardeners with full, productive fall beds in October started in August.
This guide walks you through exactly what to plant, when to do it, how to deal with the heat, and what most beginners get wrong their first August.
What August Is Actually For in North Texas
Before the plant list, it helps to know how to think about August as a gardening month.
August serves two purposes simultaneously in North Texas. First, it is the last window to get a few warm-season crops in the ground for one final summer harvest. Green beans, cucumbers, and summer squash planted in early August in North Texas can still produce a solid harvest before the first frost in mid-November if you move quickly. Second, and more importantly, August is when you start transitioning to fall. You are beginning to remove spent summer crops, amend soil, and start warm-season transplants indoors or plant cool-season seeds directly into the ground as soon as soil temperatures allow.
The first frost in North Texas arrives around mid-November. Working backward from that date, broccoli, cauliflower, and cabbage transplants need to go into the ground in late August or September to have enough time to mature. That means the seeds for those transplants needed to be started indoors in June or July. If you did that, those transplants are likely ready now. If you did not, buying transplants from a nursery in late August is the next best option.
Step 1: Start Removing and Clearing Summer Crops
Before you plant anything, assess what is worth keeping and what needs to come out.
Spring tomatoes that have stopped producing and are heavily diseased should be pulled. Do not put diseased plant material in the compost bin. Disease spores survive composting and come back as problems next season. Bag it for yard waste collection instead.
Pepper plants that still look healthy should stay. They are almost certainly going to push a strong fall flush once temperatures moderate in September and October. Keep them alive, mulched, and watered.
Okra that is still producing can stay until it stops. Once it does, pull it out and clear that bed for fall planting.
Any bed that is empty or about to be emptied needs to be amended before replanting. Work two to three inches of finished compost into the top layer. Depleted summer soil does not magically recover on its own, and cool-season crops planted into tired soil will underperform from the start.
Step 2: What to Plant in August
Direct Sow in the Ground Now
These crops can go directly into the soil in August and will produce a fall harvest if you get them in quickly.
Green beans and bush beans: Plant seeds in early August. They germinate fast in warm soil and can produce a fall harvest before frost arrives. Choose a variety with 50 to 55 days to maturity for the best chance of finishing before mid-November.
Cucumbers: Still viable if you plant in the first two weeks of August. They produce quickly and will keep going until frost.
Summer squash and zucchini: Plant early in the month. Fast-maturing varieties can produce a solid second harvest before the season closes.
Beets and carrots: Both can go in the ground in August in North Texas. They need consistently moist soil to germinate in the heat. Plant them, water daily until they sprout, and mulch around them with straw once seedlings are a few inches tall.
Mustard and arugula: Both germinate quickly and produce leafy greens faster than most crops. Direct sow in August for September and October harvests.
Set Out Transplants
This is the most important August planting task. If you started broccoli, cauliflower, or cabbage seeds indoors six to eight weeks ago, those transplants are ready to go into the ground in late August.
If you did not start seeds indoors, visit local nurseries and garden centers in mid to late August. They typically receive their first fall transplant deliveries in August, and broccoli, cauliflower, cabbage, and kale transplants are usually available. Buy them as soon as they appear and get them in the ground.
Set transplants out in the late afternoon or evening, never at noon during August heat. Water thoroughly at planting. Provide shade cloth over new transplants for the first week if possible. Thirty percent density shade cloth draped over stakes is enough. It reduces transplant shock significantly and gives roots time to establish before plants face the full force of August sun.
Fall Flowers
Pansies, snapdragons, and ornamental kale typically appear in nurseries in late August or early September. As soon as you see them available, buy transplants and get them into beds or containers. They need time to establish before they bloom, and plants put in late August will be in full swing by October.
Step 3: Manage the Heat During Planting and Germination
August planting in North Texas requires specific management that does not apply in spring or fall.
Water newly planted transplants every morning for the first week to two weeks. Young transplants in August soil have small root systems that cannot go searching for water on their own. The soil surface can dry out completely within hours in the August heat. Check it daily and water before it gets to that point.
For direct-sown seeds, keep the top inch of soil consistently moist through the entire germination period. This may mean a gentle watering twice a day during the hottest stretch. Use a watering can or the mist setting on your hose to avoid washing seeds out of position.
Mulch everything immediately after planting. Three inches of straw around transplants and between rows of direct-sown seeds keeps the soil temperature lower and slows evaporation dramatically. Try using straw as a mulch until seeds germinate, which provides protection from the summer sun without smothering the seedlings as they emerge.
Common Mistakes to Avoid
Waiting until mid-August or September for everything. A few crops are genuinely time-sensitive in August. Green beans and cucumbers planted after mid-August run out of growing season before frost. Get them in the ground in the first two weeks of the month.
Planting transplants at noon in August sun. This is one of the most reliable ways to lose a transplant before it has a chance. Late afternoon or evening planting is not optional in August Texas heat. It is the difference between a transplant that survives and one that fries.
Skipping soil amendment between seasons. A bed that grew tomatoes all summer is depleted. Planting fall crops directly into it without adding compost produces weak, underperforming plants that never hit their stride.
Not buying transplants as soon as they appear in nurseries. Fall broccoli and cauliflower transplants typically sell out fast once they arrive. Check your local nursery starting in mid-August and buy when you see them rather than waiting until you are ready to plant.
Forgetting to water seeds daily during germination. Beet and carrot seeds planted in August soil can fail to germinate simply because the soil surface dried out before they had a chance to sprout. Keep the moisture consistent until you see green.
Beginner Tips That Make August Easier
Set a daily reminder on your phone to check on any freshly planted transplants or germinating seeds. In August heat, a single missed morning watering can set new plants back significantly.
If you are limited on space, containers work well for fast-growing fall crops like mustard, arugula, and beans. A large pot on a patio shaded in the afternoon can produce a meaningful harvest without taking up any in-ground bed space.
Buy a bag of straw specifically for August and September planting. It is inexpensive, easy to apply, and more effective at protecting germinating seeds from surface heat than wood chips, which can get too hot in direct August sun.
Water in the early morning rather than the afternoon. Morning watering lets the soil hold moisture through the hottest part of the day, which matters more in August than any other month.
Quick Recap
August in North Texas is a two-part gardening month. The first half is for getting fast warm-season crops like beans and cucumbers in the ground for one final harvest. The second half shifts toward fall transition: clearing spent summer plants, amending soil, and getting fall transplants into the ground before the temperature window opens up in September. Mulch everything, water daily for new plantings, plant in the evening rather than midday heat, and do not wait on fall transplants once they appear in nurseries.
Get August right and you will be harvesting into November and beyond.
Ready to keep the momentum going? Check out our guide to what to plant in September in North Texas for everything you need to know about the full fall planting window, timing, and how to set up your garden for the best fall harvest of the year.