Scrogging Tutorial - Learn How To Scrog In easy 5 Steps

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Scrogging Tutorial – Learn How To Scrog In 5 Easy Steps

Scrogging Tutorial – Learn How To Scrog In 5 Easy Steps

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.

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.

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.

Thanks for reading. Please leave comments or questions below and don’t forget to download my free grow bible.


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Comment Section

22 thoughts on “Scrogging Tutorial – Learn How To Scrog In 5 Easy Steps

By Laura on 21 April 2013 at 19:17

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?

By eldenvron on 29 April 2013 at 11:57

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?

By George on 6 April 2015 at 00:04

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

By 1600p on 4 May 2013 at 09:21

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.

By John on 28 June 2013 at 18:11

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

By Robert Bergman on 28 June 2013 at 18:25

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


By David on 31 October 2013 at 06:16

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!

By Ben on 20 July 2014 at 13:01

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

By Leonard on 28 July 2014 at 23:30

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.

By Bowman on 5 October 2015 at 02:03

no shit? awesome

By sifu on 28 July 2014 at 23:45

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.


By Smok'n Pa. on 26 January 2015 at 17:38

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.

By david myers on 2 March 2015 at 22:52

Good info!

By MIKE PATTERSON on 4 March 2015 at 23:13

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.

By krowl on 31 March 2015 at 01:53

werden die pflanzen 2 mal getoppt??

By brazilian jhon on 23 July 2015 at 06:08

hi robert,

Very interesting information , helped me a lot. One of my big doubts about scrog is what can i do after watering for dont mess up my grow tent, if i cant move the plants its hard to throw away the water and this will elevate the humidity and if i left there will drown my plants roots.

keep growing

By latewood on 23 July 2015 at 18:18

Best method for a SCROG is Ebb and Flow. This allows you to have a reservoir that can be accessed easily for solution changes. Thanks everyone for the great feedback, and I invite you all to join our support forum. :)

By Michael Cicchino on 30 July 2015 at 05:09

Hey gang, glad to have found these growing guides, they are great! My hat is off to you Robert and family! I have so many books on growing marijuana, ( Ed Rosenthal, Jorge Cervantes, to name a few ) and reading your guides has revealed more info to me than all of them. I love how simplistic your explanations are on different aspects of growing and flowering. I have learned a lot and am grateful to you. I have ordered several times from you guy’s and have a lot of the freebe seeds yet to be used. Thanks again, Mike

By Sam on 29 August 2015 at 15:42

I am using LED lights, very good results, very little heat, they won’t burn the plant even touching the leaves.. didn’t even notice it on my hydro bill.

By scottyBgood on 19 October 2015 at 02:15

I am now on my second Scrog screen in my Cabinet with a foot print of 2′ x 3″ and to help the buds along the 3″ edge I have used 45 degree elbows to create a Vscrog. the buds at the edges are a little closer because of light fall off on the edges.

just my thoughts.

By Jennifer ILGM on 19 October 2015 at 16:39

Thanks for sharing!

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