Hi everyone, I am another newbie too greenhouses and composting. I am building my own 8 x 8 greenhouse using baby barn trusses and 6 ml poly. I have researched building one on the web, but I haven't found anything on what to put on the floor. I had intended to dig down a few inches and put crushed stone for the floor. Is this okay? Or should I pour concrete? Also, for location, I have a spot that gets sunlight all day and all year long. It is completely open area. Or I have a spot near maple trees that gets good sun most of the day but in early evening will be shaded by the trees. Which one is better? Glad for anyone to reply. Thanks