Septoria leaf spot is caused by the fungus Septoria lycopersici, which survives in plant debris or on infected plants. Septoria leaf spot symptoms typically begin as plant canopies start to close. Denser foliage leads to high humidity and longer periods of leaf wetness that favor the disease.
How do you stop Septoria?
- Use disease-free seed. …
- Start with a clean garden. …
- Avoid overhead watering. …
- Provide room for air circulation. …
- Mulch below the plants. …
- Plant next year’s tomatoes in a different section of your garden.
What affects Septoria?
Often mistaken for early blight in tomato plants, septoria leaf spot is a common, destructive tomato blight disease. Forms of this disease affect other plants as well, including popular ornamental shrubs and flowers such as dogwoods, hydrangeas, and daisies.
