I am growing basil and mint on the balcony and people have been telling me about buying a "12 inch pot". So, I just got 2 massive 12 inch pots. 12 inch in diameter. I was like "surely these plants need something big if their roots spread fast", but did I misunderstood something? Did they mean 12 inch in height?
Here is a photo of the basil and its 12" clay pot. :)