Due to a combination of reasons, it is advisable to select landscape trees that require zero care. 
Here is a list of trees that will be able to survive without watering and can tolerate excessive drought:


1. Texas Persimmon
2. Gum Bumelia
3. Prickly Ash  
4. White Shin Oak  
5. Western Soapberry 
6. Mesquite
7. Prairie Flameleaf Sumac
8. Texas Live Oak
9. Texas Ash
10. Netleaf Hackberry
11. Ashe Juniper
12. Cedar Elm
13. Osage Orange
14. Arizona Walnut
15. Pecan