Plant diseases are conditions that negatively affect the health and growth of plants. They can be caused by various factors, including pathogens like fungi, bacteria, and viruses. Environmental conditions, such as excessive moisture or poor soil quality, can also contribute to the development of these diseases. Symptoms may include yellowing leaves, wilting, or stunted growth, which can ultimately lead to reduced crop yields. Managing plant diseases often involves practices like crop rotation, proper watering, and the use of resistant plant varieties. Farmers and gardeners may also apply pesticides or fungicides to control outbreaks. Early detection and treatment are crucial to minimize damage and ensure healthy plant growth.