Victor, Do you have info on the tree-borne bacteria that provides the seed for rain to form around. Bill mentions it in his "Trees" video as well as in the Designer's Manual but I want more detail. Also, does Bill have and e-mail address? If you don't have information, do you know someone who does that I could contact? Thanks, Kate Brown Here Kate is a resource of people on this list who can help, lets give it to them. Yours Vic Guest