Hmm.. grow size. Me and my friend build this flowering box like 1 year ago, but for various reasons decided it was not safe at the time. I realized just recently as I started the project back up that the thing was an awkward size for 2 plants. It is 22" x 30" x 5' . It probably should just have been 4' tall, but I guess I will just prop the pots up a foot or two. Anyway, the important measurement, I suppose is the 22" x 30" canopy. Growing Papaya -- hoping for a couple oz. but I really don't know what to expect.