In the process of growing cannabis, we often hear about training methods including ScroG, LST, SOG, Lollipopping, Main-lining and Super Cropping. Today, we will focus on the ScroG technique, which is more suitable for Sativa or varieties with more branches. It can not only maximize the light absorption of the plant, but also effectively manage the growth of the plant. But what exactly is the ScroG technique, how does it work, and how to start implementing it?
Basic principles of ScroG technology
ScroG technology improves light efficiency and space utilization by using a flat grid to guide and support the growth of plants. In ScroG, plants are trained to keep their main growth point (top) on the same horizontal plane, ensuring that every part receives light equally, thus promoting more balanced growth and development.
Start preparations for ScroG planting
To successfully implement the ScroG technique (more suitable for Sativa or multi-branched varieties), you will need the following tools and materials：
A sturdy screen, usually made of metal or plastic.
Sufficient brackets to hold the screen in place.
Suitable scissors for pruning and shaping the plants.
Detailed steps of ScroG technique
1. Setting up ScroG screen grid
You need to install the ScroG screen. The height of the screen should be adjusted according to your planting environment and plant variety. Usually, 20 to 40 cm above the base of the plant is the most ideal. You can use metal or plastic mesh with a mesh size of about 5 cm, which can maintain support and facilitate the insertion and management of plants.
2. Training plants
When the plant begins to grow taller and approaches the screen, select the main branches and stronger side branches of the plant and gently guide them through the mesh, then use soft binding wire or thin rope to gently secure them (to avoid damaging the plant) so that the branches of the plant are evenly distributed on the screen so that each branch can fully receive light and air.
3. Pruning and trimming
In order to allow the plants to concentrate on growing on the grid, regularly prune the lower branches and leaves to improve ventilation and prevent the occurrence of mold and disease. For overly dense areas, appropriately prune some branches to prevent light blocking, and for those branches that pass too far through the screen, they should be appropriately shortened or guided back to a more suitable position to maintain a neat ScroG structure.
4. Flowering stage
When all the main branches of the cannabis are evenly distributed on the screen and the height and shape of the plant meet the ideal expectations, you can start to control the light cycle to promote the plant to enter the flowering stage, changing the light cycle from 18 hours light/6 hours dark to 12 hours light/12 hours dark to guide the plant to flower.
5. Water and Nutrition Management
Keep the soil moderately moist and adjust the nutrient supply according to the growth stage of the plant. During flowering, the supply of phosphorus and potassium may need to be increased to support the growth and maturity of the flowers.
6. Monitor and adjust
During the entire ScroG planting process, adjust the management strategy according to the growth of the plant and the external environment (such as temperature and humidity changes). At the same time, pay attention to any signs of pests and diseases and deal with them in time to ensure the healthy development of the plant. Finally, judge the best harvest time by observing the color of the trichomes on the flowers.
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