Root and crown rot with dark, mushy roots, stunted growth, and lower leaf yellowing; can also cause a leaf blight in very humid conditions.
Cause & development
Calonectria spathiphylli (formerly classified under Cylindrocladium) is named for and specifically documented on Spathiphyllum (Peace Lily). EPPO code CALOSA.
Favorable conditions
•Warm temperatures with high humidity
•Overwatering and poor drainage
•Contaminated potting mix or propagation stock
Management
1Let soil dry between waterings and ensure good drainage