Hello,
in my long lasting battle with Phytophthora I found a good table of active substances (components) of fungicides which work on Phytophthora.
I am posting it here.
Have in mind the best way how to battle the disase is prevention, but sometimes it is good to know what helps. Because names of the fungicides vary through countries, but you can find the right ones throught the active substances.
It is a list of fungicides which can be bought in Slovakia, but it includes a list of active substances working on Phytophthora, which can be used internationaly when searching for the right fungicide.
Hope it can help somebody.