Philodendron Diseases

Informational table showing disease name, symptoms, pathogen/cause, and management of Philodendron diseases.
Philodendron Diseases - Articles

Updated: August 8, 2017

Philodendron Diseases
DiseaseSymptomsPathogen/CauseManagement
Bacterial Leaf SpotTranslucent spots on leaf margins become reddish-brown with yellow halos. Large spots are tan and irregularly shaped.Xanthomonas campestris pv. dieffenbachiaePurchase plants free from the disease. Avoid overhead watering. Remove infected leaves.
Bacterial Blight Philodendron selloumSmall very dark green spots on leaves expand rapidly and spread to petioles. Infected leaves collapse in a wet rot that smells foul.Erwinia caratovora pv. Carotovora E. chrysanthemiAvoid overhead watering. Remove infected leaves of plants not severely affected. Water in a manner that keeps the surfaces of leaves and petiole dry at all times.
Cold InjuryVery dark green to brown blotches form between leaf veins.Temperatures below 50° FDo not place plants near air conditioners. Maintain temperatures above 55° F.
Magnesium DeficiencyV-shaped yellow areas form on leaves especially in cool greenhouses.Insufficient magnesiumApply one teaspoon magnesium sulfate (Epsom salts) per gallon of water.
Tip CurlLeaf tips curl downward and leaf margins brown. Roots die.Over-fertilizationReduce fertilizer rate and leach the soil if slow-release fertilizer is not present. Repot if excessive slow release fertilizer was used.