What size are those bags? If I am gu-estimating the size correctly they look like 5 gallon. I had 6 plants in a 2 X 3 area and in 2 gallon plastic bags and they took over so I ended up taking one or 2 out. I like the plastic nursery bags, they are taller than the cloth bags, and since I am looking for smaller plants I don't care much about them air pruning.   Its kind of cool how the roots grow into bottom folds of the bags