Excellent info about about the Eugenol, Timothy. It will make it much easier to search for more info on the subject as well.
I especially noted the efficiency against Botrytis cinerea, which I found very interesting. Botrytis is big problems for my lilies, so would be worth trying this to see if it was better than the baking soda spray I currently use or perhaps one can even combine the two or alternate between them.
Now if Eugenol could prove to be efficient on iris leaf spot as well, that would have been awesome.
Edit: spelling
