Leaves gradually turn yellow, brown, and drop.
Symptoms often start on the lower leaves and progress up the plant.
Affected plants often have poor vigor and show non-specific symptoms of general decline. Control can be achieved by using a sterile potting mix and clean pots. It is also helpful to avoid overfertilizing and overwatering, especially in the crown area of the plant. It is important to never let the plant sit in standing water. Highly symptomatic plants can be rogued and removed since recovery is unlikely.