Left to their own devices, cannabis plants grow taller than they do wide. The ScrOG technique aims to bring the lower branches up and the upper branches down, stretching them across an evenly distributed plane. By placing a screen above the growing medium, cultivators can weave branches through the mesh as plants grow and mature. By redirecting individual branches and running them lengthwise across the screen, growers achieve a flat horizontal canopy.
But why ScrOG in the first place? Well, the technique offers plenty of advantages, including:
You’ll start to guide your plants through the screen as soon as they start making contact with it. We recommended positioning the screen around 20cm above the base of your plants, so their rate of growth will determine when exactly you start to ScrOG.
Start the “tucking” process as the apex of each plant begins to grow through the screen. Wait for each tip to grow 5cm above the screen. Proceed to tuck each individual shoot under the screen and direct them through the next square away. Tucking will lay the foundation of the ScrOG process, so be mindful of the direction you want each branch to grow towards.
Continue this process throughout the vegetative phase. Switch to a 12/12 light cycle to induce flowering when the screen becomes mostly filled.
Continue to tuck and weave each branch over the next 2–3 weeks as your plants begin to stretch. This increase in growth will allow you to fill out the screen before your plants enter the true flowering stage and slow their growth.
Avoid tucking and weaving your plants too early. It might be tempting to rush ahead, but they’ll only grow well beyond the screen. Training your plants into the mesh too early—during the early vegetative phase—will lead to extra work. You might even run out of room on your grid.
Although ScrOG setups can look complex, the technique requires little work. Even if you have limited experience growing cannabis, you can jump right into the technique and produce good results. Just make sure to follow the guidance below, and you’ll be in for a happy harvest.
With or without training, growers should always tailor strains to their preferences, spatial limitations, and climate. Some genetics are far more compatible with the ScrOG technique than others. Check out the best characteristics for the job below.
You’ll need to select the correct pot size to optimize your grow. This variable will shift depending on how many plants you want to incorporate into your ScrOG. Consider the following factors:
Growing multiple plants in a ScrOG means you can harvest several of your favourite strains. You can grow high-THC and high-CBD varieties together, and even match plants based on their terpene profiles.
As one of the most important factors when growing several plants, the correct spacing will help minimise mould formation while encouraging the best yield possible. The goal: Fit in as many plants as possible for best results, while keeping them far enough apart to increase light exposure and aeration.
You’ll get away with squeezing four small/medium-sized plants per m² in a maximum pot size of 11l.
Building a ScrOG screen is easy peasy. If you’ve ever constructed flat-pack furniture or hung a picture on the wall, you’re more than qualified. Make sure you have the following resources and equipment, and you’re good to go.
After a couple of weeks in the seedling stage, your plants will enter the vegetative phase. You’ll need to tick the following tasks off your checklist to ensure your plants are fully compatible with the ScrOG method.
Keep weaving throughout the early flowering phase until your screen becomes filled. Secure branches in place using soft garden ties.
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