odrexanswered grow question 3 years ago A Scrog (screen of green) is a training method used to manage the canopy of the plant(s). As a plant stem grows, you pull it to trellis net holes that are further away. This will cause the offshoots to receive increased light exposure and grow upwards with more uniformity. This results in an increased yield as lower bud sites receive greater light exposure. Usually, the apexical dominance of the cannabis plant means that the top cola of the plant receives more light.
The primary purpose to shift the plant growth from being vertically dominant to horizontal. This means the plant will grow wider instead of taller which means they take up less vertical space (good for tent grows).