The biggest pot I have free at the moment is 2.6 gallon (5 L). I think, I'll be able to hide a couple of 2.6 pots from masons. If pots are bigger, it's a problem to move them. It is not so easy.
If the contest rules accepts this kind of pots, I'll star tomorrow.
Yeah I don’t see why not honestly. Perhaps you could just add another 2.5 gallons when the masons are finished?
When masons have gone I'll plant no one but many more :) The problem is 'when'. I think they will go in a month more or less.