I'm thinking about making tiers for mine this year, using different sized pots, maybe three; one on top of the other with the largest size on the bottom. I did that once with two different sized barrels, but being totally ignorant at that time I didn't realize the wooden barrels would disintegrate so quickly.
So, clay pots, maybe. It seemed to be a good way to separate the different mint flavors, basil too.
Makes a nice patio display as well and not so far from my kitchen.
