Diplodia is a genus of fungi that primarily affects plants, particularly trees and shrubs. It is known for causing diseases such as Diplodia tip blight in conifers, which leads to needle browning and dieback. The fungus thrives in warm, humid conditions and can spread through spores, impacting the health and growth of affected plants. In addition to conifers, Diplodia can also infect other plant species, leading to various symptoms like wilting, leaf spots, and fruit rot. Effective management includes proper sanitation, pruning infected areas, and applying fungicides when necessary to protect plants from severe damage.