Watermelon Peperomia (Peperomia argyreia)
- What it saw
- Irregular brown-to-rust spots on the underside of a leaf — the pattern of a fungal infection, not a pest. No frass, webbing, or feeding damage found.
- Why now
- Late summer heat and humidity are prime time for leaf-spot fungi, especially indoors where air doesn't move.
- Organic fix easy
- Prune and toss the spotted leaves. Let the top inch of soil dry between waterings, stop watering from overhead, and give it a little airflow.
- If it keeps spreading medium
- Organic copper fungicide, or a chlorothalonil product for a stubborn case.
"Monitor closely. Implement cultural improvements first."
