Another big gardening freak here -- it's such a gratifying activity!
When I lived in California, we grew produce in every nook and cranny of the yard and had something happening year round -- lettuce, spinach, herbs and onions always, with tomatoes, squash and corn in the summer. Now we live in Oregon and have a MUCH larger garden space! We do save money but not time. It's a very worthwhile trade-off so far as I'm concerned.
My summers are taken up with hours of canning and preserving whatever we don't eat fresh. I haven't purchased prepackaged tomatoes, jams, peas, corn, berries or fruit for years. We also grow asparagus, cantaloupes, squash, beans, broccoli, cauliflower, cabbage, potatoes, garlic, onions, leeks, peppers, beets, arugula, lettuce, spinach, chard, carrots, herbs, celery, cucumbers and rhubarb -- just about anything you can think of. We also grow plums, pears, figs, apples and grapes. It sure makes eating healthfully a lot easier. Pulling weeds and digging around keeps me more active as well.
We're lucky to live on acreage and raise most of our own food... in addition to our vegetable garden, we raise our own beef and keep chickens/ducks for eggs. Now, if only I can learn to eat much less of it all!!
Good luck with your garden. Growing in Texas is obviously very different than growing in Oregon, but if I can give you any tips, just say the word.
All the best, Rae