hehehe Moggle, you are going to have a self sufficient balcony! So wanna see photos! Your pot growing prompted me to fill some the other day and already the deck and steps are looking packed and lubberly!
p.s. Bet you could, if you got a decent deep pot and just one crown. I understand from Hugh that depth of planting is all important. Course, you could always do the bag of compost type pot, just slit the top and plant half way down in it. Oooo.....sets the old grey matter working....