I am giving this product the benefit of doubt since I can't prove its performance yet. It will take a couple of months though when it gets really hot in the summer in Mississipp. My italian cypress trees have a fungus and I read where this product and Cleary 3336f will heal it. I am still waiting to see the results.
It's too soon to tell if this product has helped me get ride of systemic root rot. Has been only 20 days since application.
I can tell you that DoMyOwn got me this product in just 3 days!!! and that I called the company that makes Garden Phos and talked to a person that was very helpful in discussing the application.