Spathiphyllum Disease Management: Root Rot, Nutritional Disorders, and Viral Control

Managing Diseases and Disorders in Spathiphyllum (Peace Lily) Production

Spathiphyllum faces a root and petiole rot, nutritional disorders, and a viral disease. The lush foliage and flowers that make this plant popular require specific cultural management to maintain quality.

Cylindrocladium Root and Petiole Rot

Cylindrocladium spathiphylli causes lower leaf yellowing/wilting, dark brown leaf spots with halos, and root decay.

Management: Purchase pathogen-free plants. Discard infected plants. Apply protective fungicides.

Magnesium Deficiency

Stunted plants with reduced vigor; interveinal yellowing/bronzing with green veins.

Management: Apply magnesium sulfate (Epsom salts) at 1/4 lb per 10 gallons water.

Marginal Leaf Burn

Leaf tips/margins yellow and die; roots darken and die from over-fertilization.

Management: Leach pots if no slow-release fertilizer. Maintain moderate fertilizer levels.

Viral Disease

Dasheen mosaic virus causes mild light/dark green mosaic on some leaves; other infected leaves symptomless.

Management: Discard infected plants. Maintain greenhouse insect control.

Integrated Spathiphyllum Health Program

Successful production requires: pathogen-free starting material (critical for Cylindrocladium); pasteurized media; balanced fertilization with Mg supplementation; avoidance of fertilizer accumulation (leach if needed); careful watering; regular scouting for root rot symptoms; insect control for virus prevention; and immediate destruction of virus-infected plants. The asymptomatic viral carriers make regular monitoring and clean stock essential.