Chris from Houston, Tx writes
It was suggested by our arborist, but we don't know at what rate?
Honor Guard PPZ Fungicide with 14.3% Propiconazole is labeled for treating Tubakia dryina on Oak trees, at the following rate: Mix 16 fl. oz. of Honor Guard PPZ in 100 gals. of water and apply as a full coverage spray to the point of drip. Apply every 14-28 days, beginning when conditions are favorable for disease development. For Douglas fir needle rust, apply once in May. For tip blight, initiate applications in mid-late winter, and apply 3 times at 2-month intervals. Please read and follow the label accordingly.
Answer last updated on: 01/27/2017
