SCROG means 'Screen of Green', a take off of 'Sea of Green'. A netting or screen is used to control the plant's height. When a branch grows through the screen by a few inches, it is redirected under the screen, forcing it to grow horizontal. By doing this, the plant releases auxin which makes the nodes branch out, creating more potential colas. When we are ready to flower, we change the cycle, finish training and allow the tops to grow through the screen so they can begin to flower. The technique increases yields and maximizes light efficiency.