Treating Tomato Fungus Organically

Yellowing leaves with brown spots often indicate early blight or septoria leaf spot. Before buying expensive neem oil or copper spray, try cultural fixes:

• Water at soil level only—keep foliage dry.
• Remove and destroy affected leaves.
• Mulch to prevent soil splash.
• Stake plants to improve airflow.

If disease progresses, copper-based fungicides (like Soap Shield) or neem oil are effective organic options.