I am finding vague and contradictory information, and also having a lot of trouble finding pot sizes (inches vs trade size, vs volume) so...just asking direct! I have sugar snap peas, Lincoln homesteader peas, Kentucky wonder pole beans, and dark green zucchini. I would like to know how shallow of a pot I can use (ex. approx. 6g but 14cm deep). I am getting the impression 12"(store label measure) is 5g and the recommended, but am really hoping to use the long shallow planter, and a different 10" panterra (volume unknown 3-5g) without having to buy all new pots. Thank you for any advice/clarification!