Root rot is a common plant disease caused by various fungi that thrive in overly wet soil conditions. When the roots of a plant become waterlogged, they can’t get enough oxygen, leading to decay. Symptoms include yellowing leaves, stunted growth, and a foul smell from the soil. To prevent root rot, it’s essential to ensure proper drainage in pots and garden beds. Using well-draining soil and avoiding overwatering can help keep plants healthy. If root rot occurs, removing affected roots and repotting the plant in fresh soil may save it from further damage.