Texas growing zones range from 6b to 10a. The coldest area indicated on the Texas USDA plantation map is 6b, located in the northern part of the state. The rest of Texas enjoys very warm weather all year round, including the winter months. The remaining areas of Texas include zones 7a, 7b, 8a, 8b, 9a, 10a, and 10b.
Winter lows can drop to -5 degrees F. or reach 20 degrees F. One way to determine which plants will thrive in Central Texas is to understand the USDA hardiness zones. Central Texas is a unique region with its own particular climate, and it's important to choose plants that are adapted to this climate to create a successful landscape.
While the Texas zone map doesn't guarantee that plants will survive, it does provide a very solid framework for planning a garden. If you're looking for some ideas for plants that can grow well in your garden, here's a list of common plants used in gardening that will thrive in USDA hardiness zone 8b.