It will be chilly nights around Houston the next several days, so be aware that the most vulnerable plants may need some protection.
I wrote about it last year too, because such incidents with frost and/or cold winds where plants die or are very damaged that new gardens lose interest or simply give up. You can read about that here. And I wrote about a ugly, but effective way to make life a tad more sheltered for smaller plants here.
For prolonged garden fleece cover may be insufficient, but against cold winds and brief periods of frost, the wrapping will prevent new shoots to get freeze damage, and hopefully prevent that the plant is generally weakened by the cold. Plastic is not really recommended since it creates condensation and prevents air circulation, but for some days it’s fine just as long its not become too hot daytime.
Best of luck against winter winds from me.<3