White Mold Sclerotinia Rot

White mold sclerotinia rot appears on carob, mescalbean, and Texas privet as a soft, wet rot of stems and crowns, often accompanied by white, cottony fungal growth. Infected plants may collapse suddenly, especially in cool, moist conditions. The disease is most damaging to young plants and those stressed by poor drainage or high moisture levels around the root zone.

This soilborne pathogen persists for years in infected soil, so location matters enormously. Never replant susceptible species where the disease has occurred without addressing drainage first. Space plants for good air movement, water only at the base and early in the day, and avoid overfertilizing since tender new growth is most susceptible. Remove and destroy infected plants immediately to prevent spores from persisting in your garden.