Seedling diseases are illnesses that affect young plants, particularly during their early growth stages. These diseases can be caused by various pathogens, including fungi, bacteria, and viruses. Common symptoms include wilting, yellowing leaves, and stunted growth, which can lead to significant losses in crops if not managed properly. Preventing seedling diseases involves good practices such as using disease-resistant seed varieties, maintaining proper soil drainage, and ensuring adequate air circulation. Additionally, sterilizing tools and containers can help reduce the spread of pathogens. Early detection and treatment are crucial for protecting young plants and ensuring healthy development.