Dan from Hollywood, Fl writes
Banrot WP Fungicide is labeled to treat both Phytophthora and Thielaviopsis bud rots in palms by bud drench, but it is only for use in commercial greenhouses. Whether treatment for your plants is possible will depend on the age of the plants and severity of the problem. This article from the University of Florida Extension has great information about these pathogens and treatment options.
Answer last updated on: 10/19/2017