Have an old dogwood that has either a disease or a fungus and desperately need help in treating or managing this problem. Here are the main details: 1. Leaves are spotted and ends are browning. 2. Bark is split in several places. 3. There is a green 'mold' like substance on bark in some areas. 4. The new saplings are yellowing. 5. There are a couple of young branches that have died. 6. There is some huge, ugly 'thing' growing at the base of the tree in 2/3 places. I have many more photos but can only post so many. Can someone please tell me what to do or point me to another website/individual who can help? Thanks so much.