White Mold on Utricularia longifolia Soil: Treat and Prevent

A U. longifolia from a show developed white powdery mold on soil in a bowl with ½" water, near a window indoors.

Mold Is Common, Not Deadly

Caused by poor air circulation, cool temps, low light. Unsightly but not directly harmful.

Treatment

• Sulfur fungicide or Neem oil (garden center). Safe for CPs.
• Follow label directions.
• Watch Sarracenia Northwest fungicide podcast.

Prevention

• Increase air circulation.
• Direct sunlight reduces mold (hard in OR winter).
• Issue diminishes in warmer, sunnier weather.