Leaf cupping in a mulberry tree
We have a few mulberry trees in our yard, and lately we have noticed that two of them have leaves that seem to be cupping. One of them is only partial, while on the other the whole tree seems to be affected. Is this an insect or disease? If so, how do we treat it (if necessary) I have attached a picture of the affected tree. Thank You!
Aphid problems: http://extension.colostate.edu/topic-areas/insects/aphids-on-shade-trees-and-ornamentals-5-511/