Gardening Regions for Texas

Texas Gardening
USDA Hardiness
avg minimum
Zone IZone 6 -10 to 0 F
Zone IIZone 70 to 10 F
Zone IIIZone 810 to 20 F
Zone IVZone 9A20 to 25 F
Zone VZone 9B25 to 30 F

Refer to the USDA Hardiness Zone Map to compare the temperature extremes in your area to those of the Texas zones when making planting decisions.