maybe if the plants are fixed on a very tall pole, and spaced some meters from each other, because of the sunrays inclination, all the plants on the pole can ge

maybe if the plants are fixed on a very tall pole, and spaced some meters from each other, because of the sunrays inclination, all the plants on the pole can get sunlight. this will not save space in a big farmland setup, because then the poles need to be spaced from each other in proportion to their height, or they will cover the sun from the neighbour pole, bit this can make small isolated empty spaces useful for growing a lot of plants.