Mustard (genus) with Cercosporella? Rare but Treatable

Cercosporella on Mustard (genus): What to Know?

Cercosporella on Mustard (genus) (Sinapis) is a fungal condition with moderate severity. Mustard (genus) has low susceptibility to this disease. Cercosporella is a group of leaf-spot fungi that cause spotting and blight on many plants, especially in cool, damp, or crowded conditions. Early symptoms are small tan to gray spots with darker borde...

Mustard (genus) is a easy-care plant.

Unlike most plants, Mustard (genus) has natural resistance to Cercosporella. Best treated with preventive measures rather than reactive treatment. Unlike bacterial infections, Cercosporella on Mustard (genus) can be managed with organic fungicides.

• ✓ Start with healthy, certified seed or transplants and avoid plants with leaf spots.
• ✓ Provide proper spacing to improve airflow.
• ✓ Water in the morning at soil level to keep leaves as dry as possible.
• ✓ Mulch bare soil and avoid working among plants when foliage is wet.
• ✓ Fertilize moderately and avoid heavy, quick-release nitrogen that encourages soft, disease-prone growth.
• ✓ Remove and dispose of plant debris at the end of the season and keep beds weeded since some weeds can host these fungi.
• ✓ Rotate crops and avoid continuous plantings of lettuce, beets, or brassicas in the same bed.
• ✓ Use row covers or simple rain shelters during long wet spells if practical.
• ✓ Keep a garden log to spot patterns and act early next season.