Perrywinkle
Mame
I have a bougainvillea with a robust trunk whose bark is getting a bit mush from our humid summers. The tree is perfectly healthy, it's only the outtermost bark that has gotten soft with all the rain, the inner cambium and actual deadwood are fine. Can lime sulfur be applied to this bark to keep it from rotting? I know you apply to deadwood, but I can't find much information general application to the trunk.