Oregon I believe is the mold capital, rampant here. So much that my apartment has a permanent fan sucking out moisture and it is always on to keep the moisture out of the apartment and the walls inbetween. The fan is barely audible. But with 9 months of rain, you can imagine. Here you do not have a problem knowing which direction is north - it is the side of the tree with all the moldy moss. There are some real good titles here. If he is trying to grow mold, bear in mind how dangerous it is to inhale the spores.