As mentioned in another polytunnel thread, I'm about to embark upon a small experiment in "outdoor" growing.   I finished erecting a small polytunnel type greenhouse earlier this month, and have been kiting it out to grow the usual tomatoes, peppers, etc. I also want to try growing some weed in there, but in a very discreet way.   I'm planning on popping a single autoflower into my polytunnel. I'll use a 15 litre pot, so if need be the plant can be moved around or taken to an