Plant Hardiness Zones in Iowa
Areas in Iowa Where Plants Are Most Likely to Thrive
Not all plants thrive under the same temperature and climate conditions. Therefore, it is important to know your state’s climate zone so you know what plants you can successfully grow there. Most gardeners use the USDA Hardiness Zone Map to determine what plants thrive in a specific location. The map is based on the average annual minimum winter temperature, divided into 10-degree F zones. Below is the map for Iowa. Iowa is known for its humid climate and extreme temperatures. Thunderstorms and tornadoes are also common in this state. The time in which you should plant your seeds or transplant them outside depends on what zone you live in. We recommend growing lettuce, daylilies, blanket flowers, and poppies here.
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