This link mentions a few sprays for treating pine tip blight. http://www.ksre.ksu.edu/path-ext/factSheets/Trees/Pines/Sphaeropsis Tip Blight of Pines.asp I have to spray quite a few austrian pines that have mostly dothistroma, but a few have diplodia tip blight it seems. I was gonna just mix up my own bordeaux, but am considering using one of these. Anybody used these, or have any other preferences....thoughts? .