Dwarf Mistletoe
All native conifers
Management: Pruning, Removal of infected specimens
Planting of resistant species

Rusts
All native pines, Engelmann Spruce, Firs
Cause for loss of Western White Pine's
Management: Planting of resistant species

Heart Rots
All native conifers
Management: Planting of resistant species to specific fungi, Maintain proper harvest intervals, Minimize damage to trees such as scaring and pruning damage

Root Rots
All native conifers
Management: Planting of resistant species to specific fungi, Maintain proper harvest intervals

Needle Casts
All native pines, Western Larch, Douglas-fir
Management: Pruning, Fungicides, minimize tree stressors

Blights
All native species
Management: Fungicides