Thats kinda true but you can slightly elongate them into more of an oval than a circle if that makes any sense lol...Like if you had a room that was "deeper" than it was wide you could fit them in there better by stretching them as you fill it with medium and kind of shape it to fit the area that way...the base of the pot will remain whatever shape they made it but you can elongate the top portion to accommodate your area a little better...
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