Fungal diseases have started in earnest on shade trees. This group of fungi includes anthracnose, apple scab, and others. Most have irregular dead areas along the leaf tips, margins, and between the veins. We have had this group of diseases most years, and have seen that trees generally survive quite well. This year will be worse on trees with borderline health, because of the freeze. There is no cure for a disease that has infected a leaf, but usually it is not life threatening.