Fact Sheets

Broccoli, Cole crops: Black rot

Broccoli, Cole crops: Black rot categories: Broccoli, Cole Crops Broccoli, Cole crops Diseases Vegetables revision date: 2023-01-04 12:00 Biology Black rot is a bacterial disease affecting most cultivated and weedy plants in the mustard family. Cabbage and cauliflower are the primary cultivated hosts in Washington. The bacteria enter via wounds or at the leaf margins. […]

Broccoli, Cole crops: Clubroot

Broccoli, Cole crops: Clubroot categories: Broccoli, Cole Crops Broccoli, Cole crops Diseases Vegetables revision date: 2023-01-04 12:00 Clubroot symptoms on cabbagePhoto by: L.J. du Toit Biology Clubroot is a disease that affects plants in the mustard family. It is caused by a soil-borne fungus-like organism. Affected plants develop abnormally large roots which may become swollen […]

Broccoli, Cole crops: Downy mildew

Broccoli, Cole crops: Downy mildew categories: Broccoli, Cole Crops Broccoli, Cole crops Diseases Vegetables revision date: 2023-01-04 12:00 Downy mildew symptoms on broccoliPhoto by: R.S. Byther Biology Downy mildew is a fungal disease typically found on leaves of broccoli, cabbage, and other plants in the mustard family including weeds. Leaves first show pale green to […]

Broccoli, Cole crops: Oedema

Broccoli, Cole crops: Oedema categories: Broccoli, Cole Crops Broccoli, Cole crops Diseases Vegetables revision date: 2022-12-07 12:00 Oedema symptoms on top and bottom of geranium leafPhoto by: R.S. Byther Biology Oedema is a physiological problem. Symptoms are usually seen on the lower side of leaves, but may occur on any part of the plant. Watery […]