Root Rot

Overwatering

To address root rot in Anthurium friedrichsthalii, first, cease watering immediately and allow the soil to dry out. If the plant is severely affected, remove it from its pot, trim away any black, mushy roots, and repot in fresh, well-draining soil. Ensure the new pot has adequate drainage holes. Going forward, water only when the top inch of soil feels dry to the touch, and avoid letting the plant sit in standing water.

Bacterial Blight

Caused by the bacterium Xanthomonas axonopodis pv. dieffenbachiae, this disease leads to yellowing leaves, water-soaked lesions, and leaf drop.

To manage bacterial blight, start by isolating the affected plant to prevent the spread. Remove and destroy all infected parts of the plant. Ensure good air circulation around your plants and avoid overhead watering to keep the foliage dry. Using copper-based bactericides can help prevent further infection, but it's crucial to follow the product's instructions carefully. Always sterilize your tools after handling infected plants to avoid spreading the bacteria.