Understanding the USDA planting zone you reside in can mean the difference between success and failure in your plants. Flowers that are appropriate for your U.S. growing zone will make sure that your garden is in tip top shape year after year. Rhododendrons and azaleas are generally hardy plants, and if properly cared for can grow in zones 3, 4, 5, 6, 7, 8, and 9.
What Planting Zone Do You Live In?
Below is a link to the USDA planting zones for each state.