A mystery tree in our yard (we don't know what it is) has a lot of odd little...
A mystery tree in our yard (we don't know what it is) has a lot of odd little growths sprouting from the upper side of many leaves. They're light green, about 1/4 to 1/2 inch long, skinny, maybe 6-10 per leaf. Image attached. I saw a light green caterpillar about an inch long on the underside of one leaf. What is the growth and what should we do? If we have to cut affected branches off, that will affect many branches. Thanks!
Montgomery County Maryland
This looks like a wild cherry with spindle gall. The galls will not hurt the tree. They do not need to be removed. We cannot say what the caterpillar is, but if there is only one, do not worry about it. http://extension.umd.edu/learn/insect-and-mite-galls-plants-hg31 vw