Leaf Browning and Crisping

Underwatering

To address leaf browning and crisping caused by underwatering in Anthurium pendulifolium, ensure the plant is watered regularly, allowing the top inch of soil to dry out between waterings. Use lukewarm water to avoid shocking the plant's roots. If the plant is severely dehydrated, soak the pot in a water-filled basin for about 10 minutes to rehydrate the soil thoroughly. Adjust your watering schedule according to seasonal changes, as indoor heating during winter can increase soil dryness.

Root Rot

Overwatering and poor drainage conditions, often exacerbated by fungal pathogens like Phytophthora and Pythium species.

To manage root rot, ensure the plant is in well-draining soil and reduce watering frequency. If the plant is already affected, remove it from its pot, trim away any black, mushy roots, and repot in fresh, sterile potting mix. Consider using a fungicide recommended for root rot, but ensure it's safe for use on anthuriums. Improving air circulation around the plant can also help prevent the issue from recurring.