Plants in tidal wetlands can change how iron behaves in the soil. The roots of plants create a special area called the rhizosphere that affects the soil around them. This study looked at how the rhizosphere influences iron in wetland soils. They found that the rhizosphere makes the soil more acidic and increases certain chemicals like dissolved organic carbon and iron. Bacteria that help with iron reactions are more active in the rhizosphere. The rhizosphere also changes the types of iron present in the soil, making it easier for microbes to use. This process helps prevent the buildup of harmful chemicals and boosts the breakdown of carbon in wetland ecosystems.