Until this episode the show was barely watchable, (barely mainly because of the main judge and poor editing) yet somehow still enjoyable. Then it comes this flowery pile of garbage where the TWO referees are annoying stuck ups.
The competitors are requested not only to build a 3m (10ft) wide hybrid sculpture of plants and garbage (yes, literal garbage), but to balance it on a pole (although juggling the sculpture is NOT part of the requirements). So the competitors have to guess a design not knowing in advance which materials/plants they'll have access to or the max load the pole can stand, but still put their best to face a clearly unfair challenge.
Now, imagine if, to add spice, the structural integrity of the poles were not tested in advance, so one might just break at the soldering point... But don't worry, if the pole breaks: you won't get disqualified because using the pole is not mandatory.
Obviously, the team that fails the non-requirement is sent home.