What is SCROG?

The acronym SCROG, or “screen of green,” refers to an indoor cannabis training method. There are many various methods for indoor growers to maximize their area, but scrogging is one of the most popular.

The goal of SCROG is to teach cannabis growers to maximize light use and create the most top buds, or colas, from their plants. It’s highly probable that just one big cola will result if you don’t train your plant before putting it in a pot with other plants. With SCROG, each branch becomes a large cola. This encourages growers to achieve high yields from as few as one to five plants.

To grow a SCROG, growers set a Net—which resembles a huge metal grid—about 15 inches above their indoor cannabis plants. After cannabis branches emerge through the net, cultivators bend the stalks and connect them to the screen in order for them to grow outwards rather than up.

Scrogging is usually done in tandem with another procedure known as topping. Topping is the practice of pruning your cannabis plants’ tips to induce outward development. You’re assisting them to grow additional branches and become bushier by topping your plants. Then, when you scrogg, it helps expose every inch of those branches to lights so that they may be utilized most effectively indoors.

Scrog vs. Sog

Another type of crop growing technique that promotes high yields is the sea of green (SOG) approach. In some respects, it’s the polar opposite of SCROG. SCROG grows just a few plants and develops numerous, highly developed bud sites. SOG, on the other hand, employs many plants (30 to 40) and concentrate on one main cola development.

The cannabis plants are switched into flowering after a few weeks to a month. This causes the clones to go into overdrive, as their stalks thicken and they begin to create a single magnificent bloom.

The SOG approach is considerably more rapid than SCROG. Professional growers frequently utilize the SOG technique for quick results. SCROG is better suited for beginning gardeners because it allows for quicker growth and harvesting of a larger number of plants over a shorter period of time.

Indicas grow well with SCROG, but sativas are better suited to the SOG approach. In most jurisdictions, you may only cultivate up to 6 plants in a SOG system. This limits the number of plants that may be grown in some regions. Overall, both techniques produce similar yields.

Why Use The SCROG Method?

Indoor growing cannabis can be pricey because the lights required to stimulate healthy development consume a lot of power. That’s why the SCROG technique was developed. With the SCROG method, each developing region receives the same amount of light, resulting in many large colas while also utilizing the whole grow room most efficiently. Plus, there are no taller plants to cast shadows on shorter ones, thus everything is about equal height in the green screen.

Scrogging is a great technique for indoor growers in both illegal states and those with a small number of legal plants they can cultivate. It’s fantastic in Canada, where at-home growing is permitted but most provinces only allow each household to grow four plants. Four plants cultivated using the SCROG technique will produce more high-quality flowers than four plants cultivated without it. Furthermore, all of the buds will be top-shelf quality colas. There will never be soft buds on bottom branches that don’t fully mature.

Scrogging is also useful for growing sativas in garages. Sativas, unlike indicas, are tall plants that continue to develop throughout bloom. Although this isn’t an issue outside, it is certain that they will reach the ceiling if cultivated inside. As a result, many indoor cultivators utilize a green screen to limit sativas while still increasing their yield and using less light.

Scrogging has another advantage: indoor growers may lower the brightness of their grow lights to the lowest level possible. It’s significant because light intensity is one of the most important elements of successfully growing marijuana inside. In addition, if some plants are taller than others, lowering grow lights isn’t an option since the tallest ones might be damaged.

Since they’re all the same height with the screen of green approach, burning tall plants won’t be an issue. Just make sure your grow room doesn’t exceed 77 degrees Fahrenheit to avoid killing or damaging plants. In essence, scrogging gives you the best quality buds for your energy expenses or the greatest “buds for your money.”


Why, you ask, would one use ScrOG? There are several reasons for using ScrOG. It has a number of benefits, including:

  • Light exposure: One light shines down on both ScrOG and HPS. The task of growing cannabis in an outdoor grow space is made even more difficult because there are no two-way lighting systems. When novice cannabis plants have one main cola that rises above the rest of the plant, it’s important to position the light rig higher than this zone. A lighting rig may, however, hang freely over each flower in a ScrOG garden when compared to other types of gardens.
  • Yield: Each bud site receives enough light to allow the plant to reach its maximum photosynthetic capacity, resulting in enhanced growth and resin production. This sort of training also transforms the overall stem and middle cola into a variety of shapes.
  • Aeration: Two layers of vertical green screens shield the plant from direct sunlight. By increasing ventilation above and below the plant, a fan may help to prevent fungal infections by preventing overheating.
  • Maximise space: A single scrogged plant in a little area may produce a greater yield than several smaller, untrained ones. This technique may be used by covert home growers to the greatest extent. Cultivators can even combine many plants into a single ScrOG for cultivation.


You’ll be able to lead your plants through the screen as soon as they come into contact with it. We recommend placing the screen at a height of 20cm above your plants’ base, ensuring that their growth rate determines when you begin ScrOGing.

Begin tucking as each plant’s apex begins to emerge through the screen. Allow each tip to grow 5cm over the screen after it has grown 5cm above the surface. Tuck each shoot beneath the screen and direct them on their way toward the next square away, one by one. The process of tucking will lay the groundwork for ScrOG, so be careful about how you want your branches to develop.

Continue with the procedure throughout the vegetative phase. When the screen is completely filled, change to a 12/12 light cycle to induce blooming.

Tuck and weave each limb over the next 2–3 weeks as your plants grow. This will allow you to fill out the screen before your plants enter their true-blooming period, slowing down their development.


It’s best to wait until the buds have a good set before tucking and weaving them. It might be tempting to move forward, but your plants will grow significantly beyond the screen. It’s not easy training your plants into the mesh too early, when they’re still in their vegetative phase—you’ll have to do extra work. You could even run out of space on your grid if you try this technique too soon after planting.


The procedure for using ScrOG isn’t difficult, but it does require some effort. Even if you don’t have a lot of experience with marijuana cultivation, you can easily get started and produce fantastic results. Simply follow the recommendations outlined below to ensure a successful harvest.


Growers should alter strains to match their tastes, geographical constraints, and local conditions, even if they have received no training. Some strains are far more suited to the ScrOG approach than others. The following are some of the finest features for the position.

  • Stretchy sativas: The most common kind of cannabis, indica strains are short and squat. They’re thin, with long stems that stretch out when pulled. Growers can simply twist their branches and fill out a ScrOG with ease. Of course, you may grow smaller and bushier indicas as well; just use more plants to get the most efficiency from your area.
  • Strain matching: In a ScrOG system, growers can grow many different strains in the same area at once. For a greater range of blooms, try growing various strains with similar average heights.


You’ll want to pick the appropriate pot size to get the most out of your ScrOG. This parameter varies with the number of plants you intend to grow in your ScrOG. Take into account these factors:

  • Multiple plants: Spacing is crucial if you want to grow many plants in a lesser space (more on that below). As a result, each plant will need a smaller container. The 11l pot will take the fewest amount of room while growing effectively.
  • Single plants: When you use a single plant in your ScrOG setup, you may raise the pot size. A 25l container will provide your plant enough space to establish a robust root network and wide canopy.
  • Fabric pots: The ScrOG method drastically improves aeration of the canopy, which is especially beneficial in hydroponics. The Aqua Breathe layer in the RQS Fabric Pot allows for greater oxygen levels and better moisture retention.


Multiple plants in a ScrOG may be harvested from numerous individual strains. You can grow high-THC and high-CBD varieties together, as well as match plants based on their terpene profiles.

The proper spacing is one of the most essential elements in producing a large number of plants, since it will aid in the reduction of mould formation while also encouraging the maximum yield. The objective: to fit as many plants as possible for optimum results while keeping them far enough apart to enhance light exposure and aeration.

In a maximum container size of 11 liters, you may house four small/medium-sized plants per m2.

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