Understanding Gardening Zones
Before we delve into the gardening zone of Oklahoma, let us first understand what gardening zones are. The United States Department of Agriculture (USDA) divides the United States into 11 gardening zones based on the average annual minimum temperature. These zones help gardeners determine which plants can survive in their area and the best time to plant them.
Oklahoma’s Gardening Zone
Now that we know what gardening zones are, let us look at Oklahoma’s gardening zone. Oklahoma lies in the heart of the United States, and the state has a diverse climate, ranging from hot summers to cold winters. As a result, Oklahoma is divided into four gardening zones, which range from Zone 6a to Zone 8a.
Zone 6a
Zone 6a is the coldest gardening zone in Oklahoma, with an average annual minimum temperature of -10 to -5 degrees Fahrenheit. Areas in this zone include northern Oklahoma, including Tulsa and the Osage Hills. Gardeners in Zone 6a should pick plants that can survive in extremely cold temperatures.
Zone 7a
Zone 7a is the second coldest gardening zone in Oklahoma, with an average annual minimum temperature of 0 to 5 degrees Fahrenheit. Areas in this zone include central Oklahoma, including Oklahoma City and Norman. Gardeners in Zone 7a should choose plants that can tolerate cold winters and hot summers.
Zone 7b
Zone 7b is the third gardening zone in Oklahoma, with an average annual minimum temperature of 5 to 10 degrees Fahrenheit. Areas in this zone include south-central Oklahoma, including Lawton and Duncan. Gardeners in Zone 7b should choose plants that can withstand hot summers and mild winters.
Zone 8a
Zone 8a is the warmest gardening zone in Oklahoma, with an average annual minimum temperature of 10 to 15 degrees Fahrenheit. Areas in this zone include southeastern Oklahoma, including Ardmore and McAlester. Gardeners in Zone 8a should choose plants that can tolerate hot and humid summers.
Conclusion
In conclusion, understanding your gardening zone is crucial when deciding which plants to grow in your garden. Oklahoma is divided into four gardening zones, ranging from Zone 6a to Zone 8a. When picking plants for your garden, make sure to choose plants that can survive in your specific gardening zone. Happy gardening!