Diagnosis Complete
Root Rot (Pythium / Phytophthora spp.)
Analyzed September 4, 2026
Primary Diagnosis
Root Rot (Pythium / Phytophthora spp.)
Diagnostic note
The affected Anthurium/Araceae leaf exhibits severe chlorosis accompanied by a prominent central brown necrotic lesion. These symptoms strongly suggest root stress caused by overwatering and subsequent fungal root rot (Pythium/Phytophthora), which prevents nutrient/water transport. However, localized bacterial blight (Xanthomonas) can cause very similar yellow-to-brown lesions.
What the AI detected
- Severe generalized yellowing (chlorosis) of the leaf blade
- Large dark brown to black necrotic patch with irregular margins
- Brown stippling and secondary necrotic spots along yellow tissue
- Interveinal chlorosis near healthy green tissue
Alternative possibilities
Treatment plan
- 1Isolate the affected plant from other house plants to prevent spread.
- 2Prune off heavily diseased and yellowing leaves using sterile shears.
- 3Allow the potting medium to dry out significantly between waterings; check soil moisture before adding water.
- 4Ensure the pot has adequate drainage holes and is not sitting in standing water.
Treatment guidance informed by published plant pathology research.
Photo tips for better accuracy
Diffuse natural light
Shade or overcast is best — direct sun creates glare that hides lesion detail.
Frame the affected area
Fill the frame with the sick leaf. More detail = more accurate result.
Plain background
White or neutral surface behind the leaf reduces visual noise.
Multiple angles
If symptoms are subtle, try 2–3 shots from slightly different angles.