We have a tall, multi-cane bush which is showing what appear to be whitish splotches on the branches. I don't know the name of the bush, but it is common in the Chicago area. This bush, which starts out in spring with white buds and then leafs out in green, now has many leaves which are turning brown. We thought it was a lack of water problem, but that does not seem to be the case. How to deal with this? Thanks in advance.
