Root Rot

Overwatering

To address root rot, start by ceasing watering immediately and allow the soil to dry out completely. If the plant is severely affected, remove it from its pot, trim away any black, mushy roots, and repot into 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 consider using a pot with better drainage to prevent future occurrences.

Leaf Shriveling and Wilting

Underwatering

To address underwatering in String of Hearts, ensure a consistent watering schedule that keeps the soil lightly moist but not waterlogged. Allow the top inch of soil to dry out before watering again. Use a pot with good drainage and a well-draining potting mix to prevent root rot. If the plant is severely dehydrated, soak the pot in a tray of water for 30 minutes to rehydrate the soil evenly. Adjust watering frequency with seasonal changes, watering more in summer and less in winter.

Mealybugs Infestation

Mealybugs are small, white, soft-bodied insects that feed on the sap of the String of Hearts, weakening the plant and leading to yellowing leaves and stunted growth.

To combat mealybugs, start by isolating the affected plant to prevent the pests from spreading. Use a cotton swab dipped in rubbing alcohol to dab directly onto the mealybugs, effectively killing them on contact. For larger infestations, rinse the plant gently with water to remove as many bugs as possible, then apply neem oil or insecticidal soap to the plant, following the product's instructions. Repeat the treatment every 7-10 days until the infestation is cleared. Regularly check the plant and nearby plants to prevent re-infestation.

Fungal Leaf Spot

High humidity combined with poor air circulation

To address fungal leaf spot, it's crucial to improve air circulation around your String of Hearts. Consider relocating the plant to a well-ventilated area or using a small fan to promote air movement. Additionally, reduce humidity levels by spacing plants further apart and avoiding overhead watering. If the infection is severe, you may need to remove the affected leaves and apply a fungicide specifically designed for houseplants, following the product's instructions carefully.