Ever seen a tree blow bubbles? Well, that’s not quite what’s happening here. A bubbling bole (tree trunk) like this has a few potential natural causes: 🌳 Heavy rains flowing down a trunk collect dust and salts from the tree’s bark. This combined solution can get agitated and aerated as it travels along the bark’s ridges, creating a soapy suds that has no effect on the tree. 🌳 Bacterial slime flux is caused by bacterial fermentation inside the tree, which builds pressure in the wood through gas