Explore our visual guide to 8 common Philodendron diseases and problems with
treatment tips.
Bacterial Leaf Spot
Bacterial Leaf Spot
Trim spotted leaves and throw away. Shower then spray fungicide. Watch closely for weeks; if signs return, repeat the steps until resolved. If not, discard.
Stem Rot
Stem Rot
Cut spots and powder cuts. Spray with fungicide. Remove from soil, trim black roots, treat roots, repot in fresh soil. Watch closely; if signs return, repeat the steps until resolved.
Root Rot
Root Rot
Remove from soil and check roots. Trim black, soft spots and treat the rest with fungicide. Repot in fresh soil. Watch carefully; if signs return, repeat the steps until fully resolved.
Spider Mites
Spider Mites
Isolate the plant. Prune heavily impacted areas. Treat everything with insecticidal soap. Repeat every 3-5 days until no more signs of pests appear.
Mealybugs
Mealybugs
Isolate the plant. Remove bugs by hand. Cut off heavy spots. Shower and treat entire plant with insecticidal soap, being thorough. Repeat every 3-5 days until no more signs of pests appear.
Thrips
Thrips
Isolate the plant and cut off heavily spotted parts. Shower and treat entire plant with insecticidal soap. Reapply every few days until no more signs of infestation appear.
Excessive Sunlight Exposure
Excessive Sunlight Exposure
Too much direct sun can burn leaves, turning them odd colors from stress. Position the plant where it receives bright, indirect light. If burning appears, move it to shade.
Overfertilization
Overfertilization
If leaves drop from too much food, flush soil with water to remove mineral buildup causing stress. Feed every 4-6 weeks when active. During winter, reduce feeding.
Read my extensive philodendron disease guide with pictures.