This is my 2nd year with my container garden. When planting, labels tell you how far apart in open ground. But what in containers? If i followed rules which generally is say 12" apart, i cant do this in a planter if i want a full display. Does cramming in pots make the plants grow bad? I know better to say put 1 plant per pot but if i want a nice full display can i put say 6 or 8 plants in 1 pot at 2 inch apart as long as there is depth and good drainage?