Oklahoma spans USDA Plant Hardiness Zones 6a, 6b, 7a, 7b, and 8a. The zones vary across the state, with northern and central areas generally in zones 6 and 7, and the southeastern part reaching zone 8a. This range reflects Oklahoma's diverse climate, from humid subtropical in the east to semi-arid in the west
. Specifically:
- Zones 6a and 6b cover cooler areas with average minimum winter temperatures between -10°F and 0°F.
- Zones 7a and 7b cover much of central Oklahoma, including Oklahoma City, with minimums from 0°F to 10°F.
- Zone 8a, found in the southern edge of the state, has milder winters with minimums from 10°F to 15°F
Knowing your specific zone helps determine what plants will thrive and when to plant, considering frost dates and temperature extremes typical for your region in Oklahoma
