I have a 17 year old Florida Long Leaf Pine that has a three inch base and is about twenty two inches tall. I re-potted it and after a couple of weeks I noticed a white colored type fungus on the base running up the trunk. Could this be scale or something else? If so what would be a good treatment, the tree itself looks great with dark green needles (that I checked for anything unusual) and appears to be healthy. THANKS, TLR