I put my cups in a north facing window. You don't want to cook the cuttings, but some indirect sun light helps in my opinion. You will also need to use an inverted cup, a large ziploc bag or bagggie, or a larger Rubbermaid type container to maintain humidity while the cuttings get started. Vince "Forever Figs" did a nice video on his method, I'll see if i can find it and put it in another post.