With the open branching you have with those two, you could do more plants. I was just looking at my room that currently has 9 plants in a 4' X 3' space. There is a large Toof Decay and a large Alien X Triangle that I probably couldn't do any more than 6 of as they are so large and full. (Large is 30-32"). ON the other hand the Fantasmo's are as tall but not even 1/2 as much "bulk" so 9 of those would fit in very nicely.So, I guess i haven't answered a damn thing.