It's never to late for a garden It may be late for the specific vegetables you want but if you are flexible in what you want to grow and willing to water maybe several times a day you can grow a garden in Louisiana all year.

I do not want to be specific about plants because I am by no means an expert but the Louisiana Extension service (and your local nursery) have great resources about what to plant when.

I would think you could still plant heat happy varieties of tomatos, peas and beans, Peppers like the heat and so does Okra.

Just remember that water and feading are very important to potted plant gardens during our hot summers.

Al