Fungal pathogens attack all stages of the tree growth. Rhizoctonia solani state of Thanatephorus cucumeris is the major pathogen causing high mortality of seedlings in nurseries. In plantations, trees are vulnerable to stem canker, dieback, pink disease, root infection and blister bark disease, etc. Trichosporium vesiculosum, blister bark disease pathogen and Phomopsis casuarinae, causing stem canker and dieback resulting in 10-15% mortality in coastal plantations in Kerala, are the most economically important diseases. -from Authors