It is curently in an eight inch that I cut the fancy curl off the top, drilled 3 extra drain holes and seperated the drain from the pot. So I would asume the I have about half a gallon of soil in the eight inch currently. I want to move to the 24 inch, It is ceramic, but it is a planter so it has holes 3 at the bottom and I add perlite to the soil about a 50 50 mix just wanted to know if I could just stay in the 8 or if I should even move to the 24 inch, Height is not an issue I could easily go to 6 foot tall and a couple feet wide if it will grow that big