Livestock grazing in South Texas rangelands affects plant diversity. A study compared grazed and ungrazed areas, finding more diverse and abundant plants in grazed sites. Important annual plants like hooker plantain and Rough buttonweed were more common in grazed areas, while Lazy daisy was more frequent in ungrazed sites. Golden dalea, a beneficial perennial, was also more common in grazed areas. Long-term absence of grazing harms plant communities, so a grazing system with moderate stocking rates during the dormant season is recommended to enhance plant diversity and abundance.