These zone descriptions will guide you in choosing the right plants for your garden
ZONE 10. High Desert Areas of Arizona, New Mexico, West Texas, Oklahoma Panhandle, and Southwest Kansas
Growing season: April to early Nov. Chilly (even snow-dusted) weather rules from late Nov. through Feb., with lows from 31 degrees to 24 degrees F/-1 degree to -4 degrees C. Rain comes in summer as well as in the cooler seasons.
ZONE 28. Gulf Coast, North Florida, Atlantic Coast to Charleston
Growing season: mid-Mar. to early Dec. Humidity and rainfall are year-round phenomena; summers are hot, winters virtually frostless but subject to periodic invasions by frigid arctic air. Azaleas, camellias, many subtropicals flourish.
ZONE 29. Interior Plains of South Texas
Growing season: mid-Mar. through Nov. Moderate rainfall (to 25″ annually) comes year-round. Summers are hot. Winter lows can dip to 26 degrees F/-3 degrees C, with occasional arctic freezes bringing much lower readings.
ZONE 30. Hill Country of Central Texas
Growing season: mid-Mar. through Nov. Zone 30 has higher annual rainfall than Zone 29 (to 35″) and lower winter temperatures, normally to around 20 degrees F/-7 degrees C. Seasonal variations favor many fruit crops, perennials.
ZONE 31. Interior Plains of Gulf Coast and Coastal Southeast
Growing season: mid-Mar. to early Nov. In this extensive east-west zone, hot and sticky summers contrast with chilly winters (record low temperatures are 7 degrees to 0 degrees F/-14 degrees to -18 degrees C). There’s rain all year (an annual average of 50″), with the least falling in Oct.
ZONE 33. North-Central Texas and Oklahoma Eastward to the Appalachian Foothills
Growing season: mid-April through Oct. Warm Gulf Coast air and colder continental/arctic fronts both play a role; their unpredictable interplay results in a wide range in annual rainfall (22″ to 52″) and winter lows (20 degrees to 0 degrees F/-7 degrees to -18 degrees C). Summers are muggy and warm to hot.
ZONE 35. Ouachita Mountains, Northern Oklahoma and Arkansas, Southern Kansas to North-Central Kentucky and Southern Ohio
Growing season: late April to late Oct. Rain comes in all seasons. Summers can be truly hot and humid. Without arctic fronts, winter lows are around 18 degrees F/-8 degrees C; with them, the coldest weather may bring lows of -20 degrees F/-29 degrees C.