The Texas Department of Agriculture keeps a running list of what's in season and when, but the Dallas Farmers Market also sends out a handy list of what's locally in season in each week's email blast:
FruitsAccording to the Texas Department of Agriculture's Produce Availability Chart, we've got some good stuff coming very soon: blackberries, blueberries, cantaloupes, honeydew, field peas, squash and zucchini.
Strawberries, grapefruit
Greens
Arugula, collards, kale varieties, Swiss chard, lettuces, salad mix, Napa cabbage, spinach, micro greens
Brassica
Broccoli, cabbage, cauliflower
Roots
Red beets, golden beets, carrots, kolabrabi, sweet potato, spring onions, leeks, turnips, radishes, rutabaga
Vine Ripe
Tomatoes, green beans, cucumbers
Herbs
Cilantro, dill, fennel, mint, sage, marjoram, oregano, rosemary, lavender, thyme
Mushrooms
Shiitake, oyster, portabello
Flowers and plants
Edible flowers, flower bouquets, vegetable and herb transplants
Things to stock up on since they'll be out of season soon: broccoli, celery, kale, kohlrabi, oranges, beets and spinach. Things change, of course, with weather and seasonal differentials, but it's helpful to know what's comin' and what's goin', theoretically.