You must have WINDOW and WOODEN BACKGROUND to make WOODEN WINDOW. WOODEN WINDOW is in building category. Plant and harvest in one session. Received experience is a mystery. Keep an eye out for the exp counter. WOODEN WINDOW can be broken. You get at least 1 seed back (maybe more!) from splicing WOODEN WINDOW. Will you strike it rich? You just have to count the gems yourself. Massproducing WOODEN WINDOW can be tricky. You will find out after you have harvested a few.