- Azalea Gall
- Cedar-Apple Rust
- Cenangium Canker
- Coleosporium Needle Rust of Pine
- Cyclaneusma Needle Cast
- Cytospora Canker of Ornamentals
- Douglas-Fir Needle Casts
- Fir Fern Rusts
- Hemlock Twig Rust
- Juniper Tip Blight
- Lophodermium Needle Cast of Pine
- Pine-Pine Gall Rust
- Ploioderma Needle Cast
- Red Pine Decline
- Scleroderris Canker
- Sphaeropsis (Diplodia)
- Spruce Needle Rust (Weir’s)
- White Pine Blister Rust