do u have to have 1sq ft for each plant???

do u have to have a space of 1sq ft for each plant, or can u have less?? :confused: ??

Thanks for any replys. :) .

PEACE TO ALL. :cool: .

;) lookin a 10ft x 10ft room plants 3 to 4 feet tall can only fit 12 to 15 plants depends on space and size of plants, do sea of green