- Algal Scum
- Anthracnose
- Bipolaris, Drechslera and Exserohilum Leaf Spot, Crown and Root Rot(formerly Helminthosporium)
- Brown Patch
- Dollar Spot
- Downy Mildew
- Fairy Rings
- Gray Leaf Spot
- Necrotic Ring Spot
- Nematodes
- Pink Snow Mold
- Powdery Mildew
- Pythium Blight, Cottony Blight, Greasy Spot
- Rust
- Seedling Disease
- Slime Mold
- Smut
- Spring Dead Spot
- St. Augustine Decline, Centipede Mosaic
- Summer Patch
- Take-all Patch, Bermuda Decline, Take-all Root Rot
