You could plant okra now and it should make it. Wait until August and you could plant southern peas (early August) and snap beans (mid August). Check with the Agrilife extension service in your county. They will probably have a list of what grows in your area and planting dates. Most things in Texas are grown in the spring and fall. We actually don't have a long growing season, but two short ones, spring and fall. Few things can survive our summers.

In fall planting remember that you usually have to plant before it cools off to give plants enough time to make before frost.

Last year I just gave my tomatoes room and let them fall over and re-root themselves. I didn't even know they would do that but it allowed them to stay vibrant through the hottest part of the summer. I second the okra suggestion. They thrive in hot weather. I'm trying tepary beans this year and they're supposed to be planted after the rains. I'm planning on planting them in place of my corn that's almost ready for harvest.

mid-summer? for me, nothing. I plant in Feb and again in Sept...lol!

Peppers do very well in the heat. I just seeded some okra, they loves the heat. I plan on planting some peppers very soon. (have the seeds sprouting indoors first)

I'm new to this whole gardening thing and have no real advice or experience but I have been reading...a lot...and I am in the process of getting ready to start planting for a fall garden here.

I am using this chart from the Texas Agrilife for direct sowing for a fall garden (and transplants further down the page)...thought I'd share. You might find it helpful.

http://aggie-horticulture.tamu.edu/archives/parsons/fallgarden/falldirect.html

Thanks for all the suggestions. Wanton, that's an interesting suggestion on the tomatoes that I haven't heard before. I have two indeterminate-style cherry tomato plants growing in the back of the garden up (and over!) the back fence; they're about 8-10 feet long now. One thing I've wondered about them is if I cut them back, since they're indeterminate style, will they re-grow their central vines and produce a second crop? And if so, how far back should I cut them?

That suggestion is purely a suggestion. I have done both but I wouldn't swear that I did them totally successfully. I think the cutting it back worked better. I think I waited to long to cut them back. ALSO my gardens are hit and miss. I will start something and then get involved in TOO MUCH OTHER STUFF and I drop the ball. I don't want you cutting your tomatoes down and then blame me when it doesn't go to expectation.LOL. I am barely hanging on to this years garden because of job demands. Birds are discovering my tomatoes this year. I think the ones I planted in July did really well. Pick a quick performing tomato for fall.