Where is zone 8 in texas?

USDA Zone 8 In Texas, which encompasses the state's largest geographical area, 8a and 8b include Central Texas. The area from El Paso to Dallas-Fort Worth enjoys the benefits of 8a, while 8b covers the area from the Rio Grande through San Antonio and Austin to Nacogdoches and the state's eastern border. Based on the 1990 USDA hardiness zone map, this interactive version covers the state of Texas, from USDA zone 6a to zone 9b of the USDA.