Landscaping in Texas with the use of plants that are native to the land will not only provide you a beautiful presentation, but an easily sustainable and low maintenance experience. A great resource to learn more is the Texas A&M Native Plant Database. Texas A&M also has a vast amount of great articles on plant selections tailored to your design goals.

Here are a few links :

https://aggie-horticulture.tamu.edu/ornamentals/natives/tamuhort.html

https://agrilifeextension.tamu.edu/solutions/best-plants-trees-grow-texas-landscapes/