SOG and SCROG are two different tecniques of growing. With SOG, you grow four plants per square feet in single cola style. They look like spikes when they are done. Most SOG growers shoot for between 1/4 and 1/2 ounce per plant ... so they grow a LOT of plants.
SCROG growing done is with fewer plants, with strains that like to stretch. The ideas is to end up with a great harvest from a few plants. The plants are trained under a screen, like chicken wire. All growth below the main canope, except for the main branches is trimmed off. As the plants stretch under the screen, the bud sites are poked through the holes in the screen and they grow upward from there into lots of small colas.
Vi