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The tell tale sign of SOD is the bleeding black exudate that runs out of the trunk wood Sean. Just got the go ahead to treat the two infected CLO's with Agri-Fos mixed with PentraBark today, as an R&D project. These are lightly infected trees, both in the 48" DBH range. I'll be taking pics...

Another important aspect of combating P. ramorum are Camellias and Rhododendrons being host plants that spread the disease. So if your clients with susceptible oak species have either of these plants on their properties? Removal of them ASAP is the wise recommendation IMO. Rhododendron Flower...

Thanks for the feedback Bodean, I appreciate it. LIFE CYCLE/BIOLOGY OF PATHOGEN Phytophthora species are funguslike organisms, related to algae, which occur worldwide. They are water loving and produce plentiful spores in moist or humid conditions. Most known Phytophthora species are...

Thanks Willie. That tree's a goner IMO. The pathologists say that too much water renders the tree more susceptible to SOD. So your client's lawn being over the tree's root system may be why the tree got nailed so badly? Jomo

Thanks guys. I'm going to give a mixture of Agri-Fos n PentraBark a try as a trunk spray. More of an R&D project that I'll only charge the client for materials. S.O.D.'s pretty much a death sentence here locally, unfortunately. Jomo

Thanks Guy. Agri-Fos is of course a phosphate derivative labeled for use to treat Phytopthora ramorum in CA. However only minimally as a curative in lightly infected Q. agrifolia, and more of a preventive in healthy oaks in that particular species. Hopefully some of the NorCal Bay Area lads'll...

I've got 4 mature coastal live oaks in close proximity to each other. Two of which are lightly infected with S.O.D.(Phytopthora ramorum). The other two appear to be healthy. Have any of you had any hands on success whatsoever treating S.O.D. with Agri-Fos fungicide systemically in California...