Root Rot

Overwatering

To address root rot in calla lilies, first, cease watering immediately to allow the soil to dry. If the plant is in a pot, ensure it has adequate drainage holes. Affected plants should be removed from the soil, and any brown or mushy roots trimmed off. After trimming, treat the remaining healthy roots with a fungicide recommended for root rot and replant in fresh, well-draining soil. Adjust your watering schedule to prevent future occurrences, ensuring the soil is moist but not waterlogged.

Bacterial Soft Rot

Erwinia carotovora

Bacterial soft rot is a challenging condition, as it can rapidly destroy calla lily bulbs. To manage this, ensure good drainage and avoid overwatering. Infected plants should be removed and destroyed immediately to prevent the spread of bacteria. Sterilize any tools used with a solution of 1 part bleach to 9 parts water to avoid contaminating healthy plants. Unfortunately, chemical treatments are often ineffective, so preventive measures and good cultural practices are key to controlling this disease.