Yeah Aspen, I think the Wiltpruf is 1:8 mixture maybe? One part being Wiltpruf and eight parts water. I think that's what I do it at anyway but the package may be labeled for 5-10 parts water per one Wilpruf. If I don't put it on my Sekkan Sugi cryptomeria, they can brown out, especially the one on the southwest side of the house. I think I'm going to put it on my Nellie Stevens hollies too as they have suffered some winter damage the past couple years. I don't know how long I can practically be spraying the cryptomeria because both of them are up to the roof gutter, which is about 15' high. This year I'm going to stand on the roof to spray the tops...Lol
