Anyone recognize this. I would like to know if it is a disease or a bug. Trees have been in for 4 to 5 years. This is the first year I really noticed they did not leaf out allot this spring.The Maples have some skelentonising on the leafs that are there, but it starts as light color tracks. The Ash also has a thin canopy, and the leafs that are there are curled and brown tip. These trees are all on the same property, zone 4 Wisconsin, clay soil.