Well, I am going to just jump in here.............I have ginormous plants in ginormous pots and hanging baskets and for the most part it is just the one plant (or in the case of the hanging plants, more than one of the same kind). However, after seeing the simply gorgeous huge pots of companion plantings at The Ark Encounter in Kentucky, I knew I just had to try it. I couldn't find a pot as large as what they had there........actually, I was able to find the pot, it's just the almost $200 in freight to GET it here went against my grain. LOL So the best I could do was a 36 inch (I think) and this is what I planted in it. We've not had the best growing weather till a week or so ago, but I'll update pix as the stuff grows.
Contains 1 alocasia (I had that plant already), 1 orange hibiscus, 1 King Tut papyrus, 2 purple coleus, 2 orange begonia, 2 purple and 1 chartruese sweet potato vines, and there is an ivy of some description in the back that you can't see.