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Printer Friendly Version. Understanding the USDA planting zones you live in can mean the difference between success and failure in your garden. Planting plants, vegetables and flowers that are appropriate for your US growing zone will make sure that your garden is happy and healthy year after year.
If you are looking for the growing zones in Iowa, you will need to refer to the USDA plant hardiness zone map. The USDA hardiness map above, for Iowa growing zones, can help you determine what planting zone you live in. The Iowa plant zones range from zones 4-6.