does anyone know what this could be on the trunk of this Scarlet Oak? It has just began this week. It is occuring in a line of Scarlet Oaks. The white foam is located from the top of the main leader, on scaffold limbs, all the way down the trunk. The leader and limbs are starting to severely crack and split. The foam is very stinky, like yeast.
I think I have figured it out. It seems to be "alcoholic flux" or "white flux" a bacteria that enters through wounds that ferments the sap causing it to ooze. Since the sap ferments it forms gas. This gas needs to be released due to pressure build up so it has to find a way out. I think this is what the cracks are from. There isn't a prevention or control method. Now I will focus on preventing other invaders like borers from entering these new wounds.
