- Alternaria leaf spot of crucifers
- Alternaria leaf spot on cabbage
- Alternaria leaf spot on kale
- Bacterial leaf spot on cauliflower
- Black leg on kale
- Black rot on Brussels sprouts
- Black rot on cabbage and other crucifers
- Black rot on ornamental kale and ornamental cabbage
- Chimera (genetic disorder)
- Clubroot on cabbage and Bok choy
- Downy mildew on cabbage
- Downy mildew on seedlings
- Fusarium yellows
- Head rot (soft rot) of broccoli
- Heat stress damage to broccoli heads
- Powdery mildew
- Turnip mosaic virus
- White mold