Scrogging Marijuana Tutorial

I love marijuana how to scrog

Many of you marijuana growers have probably heard the term “ScrOG” before. Much like many growing techniques, scrogging marijuana strives to make the process a little bit easier and a lot more beneficial. The term “ScrOG” is an abbreviation of “Screen of Green.”

The idea behind the scrog method is to optimize your lights and to bring lower buds up to the top of the canopy where they could produce higher yields. It’s a method that has been around for a while (prior to high-intensity discharge—HID—lamps) and has been used effectively, even with basic fluorescent lights.

Here is the Scrog Tutorial:

Scroggin in 5 steps
How to Scrog?
When to Scrog?
When to flower?
Scrog yields

Don’t want to read? Watch the video!

Scroggin in 5 easy steps


1. Place a screen at 20 to 25 inches from the pots
2. Cut off the top cola of each plant
3. Prune bottom branches when top hits the screen
4. Force into flowering 2 days after pruning bottom
5. Attach all branches horizontally to the screen

Perhaps the most important thing to have with this setup is a scrog screen, generally some kind of wire or even a tight rope. A sturdy screen that can hold back the top canopy and has 2-inch by 2-inch squares built in will certainly be adequate. Screens are also the most important aspects of scrogging.

Is this a good article? Then please visit our sponsor for a second:

Thanks! Here is more free knowledge on growing marijuana:

You are effectively “training” the marijuana plants to grow in your desired direction without having to do anything harsh that could affect growth adversely. The distance between pots and the screen should be 20 to 25 inches

This is particularly useful for individuals who either have limited vertical space or limited light emission. Having a screen over the top of the plants, keeps them lower, but it also allows the light to concentrate more evenly on each of the plants. In addition, horizontal growth will still produce useful plants in the long run. Download my free marijuana grow bible at this link and learn to grow like a pro!


How to scrog?


But, the scrogging method isn’t all about setting up a screen and watching your marijuana grow. Although very little work is involved in general, you will still need to take great care if you want to scrog correctly.

One of the first things you’ll want to do is cut the top colas off of each plant when the plant is around 10 inches tall. This encouraged the plant to create new branches that you can manipulate in any way you please. The ideal way to manipulate the new branches is to wait until they have reached the screen. At this point, the tops of the branches will be slightly poking through one of the holes in the screen.

You’ll want to continue to take each branch from each plant and move them over to the next hole so that horizontal growth can continue relatively unimpeded. Or bend and attach all the branches to the screen with some wire horizontally.

When to scrog?


Obviously, if you let the plants continue to grow vertically, you’ll run out of space. However, if the marijuana plants are “trained” to grow horizontally, you will ultimately get more yield and a better canopy later on.

Just before the top of the plant hits the screen, cut off all the small branches and side shoots at the bottom. This give a boost to the top colas because there will be no energy wasted on the growth of useless and small side shoots and fluffy buds.

The process of taking the branches out of one hole in the screen and placing them in a hole farther away from the plant base is often referred to as “tucking.” This should be carried out with the utmost care as any breakages can cause your marijuana plants to reduce growth. Some marijuana growers like to make their screens adjustable so that they can raise the “ceiling” if the growth becomes too abundant. This is really beneficial if you want to keep your plants in vegetative state for as long as you can.

Another way to ensure that the plants produce higher yields is by maintaining a relatively even canopy all the way across. This will involve cutting off the top portion of a plant to shorten it and also make room for deviations in the branches. The more branches you have, the more you can continue tucking. Since the growth is diversified and the light is hitting every viable part of the plants, the yield will increase when harvest time comes around.

When to flower?


Because scrogging represents an indoor growth technique, the shift between vegetative state and flowering state will be up to the individual grower. The timing should be ideal, but there are many different factors in play. For instance, if you’re using a hydroponic system, you might be able to take the plants from vegetative growth into flowering within a matter of only 3 to 4 weeks. If the plants are in soil, it should take around 6 to 8 weeks.

Forcing flowering is something that almost takes an intuition. You can see when the plants have sort of maxed out in their vegetative state. You will obviously want to visualize how much the plants will continue to grow once they enter flowering. When you decide to go for it, put the plants on a 12/12 light regimen.

Then, growth will start to increase as the plants begin to flower extensively. Carefully train all branches and shoots through their individual slots in the screen. I always force my marijuana plants into flower just before they start to grow through the screen.

Scrog yield


From there, the yield will start to take shape, and you’ll be rewarded with almost double the buds of a normal crop. Be sure to take extra caution while training the plants during flowering. They will naturally start to stretch through the holes in the screen and it’s important to not be too rough with them. Keeping the area below the canopy well-ventilated will also help reduce the risk of mold.

After that, you can start harvesting and enjoying your increased “ScrOG” crop. Have you ever grown marijuana in scrog before? And what are your experiences? Please let me know. And don’t forget to like or share :)

Want to try scrogging yourself? Start by buying quality cannabis seeds. I selected some very fine strains and our shop ships them for free. Worldwide :-)

Happy growing,


Do you value this information? Then please visit our sponsor for a second:

Thanks! Here is more free knowledge on growing marijuana:

Do you want to learn more about growing marijuana?

Let me give you my Marijuana Grow Bible! Just tell me where to send it.
You will get the detailed Plant Care Guide as a bonus. All for free.

Enjoyed my article? Share it with your friends. Click a social button down here and make the world a greener place

14 thoughts on “Scrogging Marijuana Tutorial

  1. Hello, i am learning so much with all this information, but at the same time i am very sad because i realize that my plants are growing very slow :( you said that i might be able to take the plants from vegetative growth into flowering within a matter of only 6 to 8 weeks in soil, but i have like 5 weeks with mines and they are 11 cm and only 5 sets of leaves. I have them indoors, with soil, fluorescent bulbs.
    Dont know what i am doing wrong, maybe the seeds were too old?

    • I have seen videos of scroggs where they use the vegetable trellis netting, this is what I thought I would try. My only issue is the spacing you mention in between pots. I have all of my pots centered under my main light ( a 90 watt led grow lamp) and three 200 watt cfls on the sides of the pots to cover the lighting they might not pick up from the led lamp. Will a scrogg screen help me increase yeild even though my space between pots has to be so limited?

    • What kind of bulbs are you using and how many watts each? I grow with cfl bulbs also and it’s going great till now. Im into flowering for three weeks using scrog method. No problems or complains at all. I would gladly help you if you need something

  2. Laura, it could be anything. However, I’d say based on your description, you may have a lighting issue. Get better lighting. And check your nutes.

  3. how many plants can i grow with scrog in a 4x4x6 tent? I have 1000 w MH/HPS and good ventilation/smell control but heat topped out at 85f. 8 oz first time, didn’t veg long enough under cfl lights

    • Hi John,

      I would recommend between 10 and 20 plants. With 10 plants you have to veg a little longer but the investment in marijuana seeds, soil and containers is lower. If you grow on soil use 6 gallon pots if you go for 10 plants and 3 gallon pots with 20 plants. Choose a dominant sativa marijuana strain like amnesia or super silver haze because they tend to grow tall. Rule of thumb; switch to 12/12 when plants are touching each other


  4. Amazing information! I’ve learned a lot and look forward to applying this knowledge. One question I have is about the stage where the plant starts growing through the screen, and your clipping it down with a tie to make it grow horizontal. You say the “the branch keeps growing, repeat the previous steps.” Do you mean- continue to tie down the branch multiple times across different “squares” when it grows up/vertical every couple inches?

    Lastly, if you don’t mind, could you please give a brief description of what a good “horizontal field” looks like?

    Thanks so much! I really appreciate it! Once again, your information is invaluable!

  5. Hello i am wanting to grow outside but woried about people passing and smelling it what seeds are the least smelling when in flower ? thanks

  6. On my 3rd grow using scrog nets using rdwc 2 containers with 10″ net pods with 2 ladies per net pod total 4 plants, last grow had 3 sour diesel and a new one catatonic. All plants scroged to a pvc frame with mason line and screws to form 2″ squares 2 frames that tie together and form a 4′ by 10′ scrog I use two 600 watt lights my last yield produced from these four plants was 23 oz cleaned.

  7. Hi All, Notsure if this is the correct thread for this post.

    I have access to two L= 7.2m H=2.4m, W=2.4m spaces. My questions. How many lights?, Fan sizes? Best medium, cocoa, clay balls, soil? Strain? Fertilizer program and method to get the biggest yields.


  8. Great information, I’ve tried different variations of this SCROG method without knowing I was doing it. Thanks your Lordship for the information. My next attempt will be with greater knowledge and preparation.

  9. You learn every day, I grow indoor, and for the first time in almost 18 months have had great crops until my last one. My plants started to curl in the leaves however I was still doing the same things as before,a friend said to me it must be heat,so I lifted the lights and still no change,then it clicked,the lights were good however the U V had gone out of them and all they were doing was heating instead of lighting .So friends don,t run your lights for any more the 5 crops before you change your lights.Hope this fixes some problems.

Leave a Reply

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong> <img src="" alt="" width="" class="" style=""> <span style="">