Once you acquire 25 banana trees, it becomes a banana plantation. Now, instead of 75 bananas, you get a free 20%! That's right, you now get 90 bananas! But that's not all. With a banana plantation, you can also recruit monkeys to do some work for you! They hate balloons so make sure not to have any of those, but whatever! You should find their services useful for your wars against the wall and other players.