Sphaeropsis sapinea

Sphaeropsis sapinea is a fungal pathogen that infects pine trees, especially during wet or stressful conditions. It causes a disease known as Diplodia tip blight, leading to brown, diebacked branches, needle loss, and sometimes tree die-off. The fungus enters the tree through wounds or weakened areas, spreading within the tissues. It can affect many pine species and is a concern for forestry and ornamental landscapes due to its potential to reduce tree health and growth. Managing the disease involves proper pruning, avoiding injury, and controlling moisture to reduce the chances of infection.