What is SOG and SCROG
Both SOG and SCROG are LST (low-stress training) techniques to control the growth of plants. This is done by creating a horizontal plane of buds which further ensures that they receive light uniformly and grow at the same rate. The science behind these advanced growing techniques is- the lower branches of high-value plants neither absorb much light nor do they make good colas. Thus, a system is created that focuses on the top part of the plant to produce huge colas and juicy buds in considerable less time.
The whole concept is to boost up the yield and ease the growing process.
How to SOG?
It’s useful for growers who face a problem with height in their indoor grow room. The maximum number of cuttings is taken from established females. A rule of thumb for flowering plants is to grow 1 plant per square foot, all at the same time. When the plants are in the same phase of growth, they will create a “green canopy” that traps maximum sunlight on the top of the plants. Concentrate on providing light to the top and use the space in the most effective way. One the set up is complete, you can place them under a “low-stress training” period. The idea is to stop the plant growing vertically without damaging the buds.
The technique is simple:
- Divide your grow room into three sections: first for mother plants on 18-24 light cycle, second for growing the clones (cuttings taken from female plants) on 24/0 hrs light cycle and third for flowering on 12/12 photoperiod.
- Take cuttings (clones) from the mother plants, transfer them to rooting solution in the second section of the grow room and quickly grow them in short bushes.
- Do the arrangement to restrict vertical growth.
- The final step is forcing the clones to flower by keeping them in 12/12 light cycle.
- Harvest them when buds pop up.
How to SCROG?
As the name suggests, the screen is the quintessential element of SCROG. It is usually a chicken wire or something sturdy enough like a strung rope to hold back the growing canopy. Furthermore, the size of the screen depends on the area of the room and the power of the lamp. The standard measurement is :
Screen Size for SCROG
150hps screen size 1.75ft x 1.75ft
250hps screen size 2.25ft x 2.25ft
400hps screen size 2.91ft x 2.75ft
600hps screen size 3.45ft x 3.45ft
1000hps screen size 4.4ft x 4.5ft
Placement of Screen
The screen is set at a specific height above the plant medium. This height varies from 8” to 24” depending on the light used to grow with. You can hang the light with chains and adjustable so that one can raise it if needed. A basic idea is given here to calculate the distance between the screen and the plants.
150hps 10-12 inches
250hps 12-15 inches
400hps 16-20 inches
Technique for Growing
The basic technique from mother to clones to flowering remains the same. However the difference is, the plants here are kept in a longer vegetative phase than SOG. The time taken for harvest automatically increases by 1-3 weeks due to the extended veg period. They are trained to grow horizontally under the screen, which acts as a support for the plant. Good luck and if you need any extra help, check out our Hydroponic FAQs forum.