I was a little incredulous when someone on iNaturalist ID’d this as heavenly bamboo, but I realized why after I googled it. The leaves turn into a dark crimson during the Fall, and it really is dazzling. Interestingly, heavenly bamboo is classified as an invasive species on texasinvasives.org. Who knew a plant with such a nice name could be capable of displacing native species and disrupting plant communities?
http://www.inaturalist.org/observations/5958052