A friend of mine gave me a few lengths of cherry and maple tree. I have cut them into sections, cut out the pith and sealed all surfaces except the bark side with two coats of Titebond 3. I wondered about putting them on the shelves in my small 10×12 greenhouse. Any advice would be helpful. I live in the Pacific northwest so it doesn't get real hot, but on a sunny day it can get close to or over 100 degrees inside.