no such thing as too big ... a common compromise is the #5 pots, approximately 11" diameter, 12" tall ... this is first time Ive gone this big, and for indoors, I think they will be sufficient ... for years I used 10" clay pots with good results, too ... I prefer clay pots because they 'breathe', the excess nutrient 'salts' leach thru the clay, if over-fertilized, BUT they need water more frequently ... these new #5 are plastic, and seem to be just fine ... my little girls look good in them, like black patent-leather shoes ... lol ...:smokin: