The October 2006 “Tree Tips” column about oak tree problems discussed anthracnose and that a spring spray would help control that disease. What kind of spray would be best for my 2 very tall trees?

Since your trees are “very tall,” it is likely you cannot reach them while standing on the ground to prune or to spray. As such you need to call a professional. Also, the equipment used to help prevent anthracnose diseases in oaks requires the power of commercial grade hydraulic sprayers to propel the protectant.

Call a certified arborist who can examine your oak trees for problems, make an accurate diagnosis, and determine if they are in need of a preventive spring spray. A reputable arborist will be licensed by the state not only in tree knowledge but also in chemical application. They have the proper equipment and protective gear that are necessary when dealing with these products. They know the correct mixture and application regime to accomplish what is needed.