I came across this on reddit, there's a lack information about it on the net. From my understanding apart from providing awesome nutrients to the plant, you need to prune it in this way to get the desired shape.
If anyone knows anything about this, please comment below, it would be great to hear your thoughts.
Found this video on youtube, from my understanding this isn't open anymore and was perhaps replaced with a "Frozen" exhibit. "This is part of the Disney World tour at Epcot called "Behind The Seeds". It is a behind the scenes look at the "Living With The Land" attraction"
Common mistakes when building a terrarium.