Robert Bergman

October 28, 2016

Pruning is always done by tomato farmers to increase the yield. The small shoots between the branches and the trunk are removed so all the energy is used to maximize fruit production. But also for marijuana plants it’s very effective to remove these useless shoots so the plant can develop bigger buds. Using this technique you will get a few big, hard and heavy buds instead of many smaller ones.

Pruning is mostly done by professional cannabis growers who wants to yield the maximum amount of weed per square meter. Because there is no energy wasted on the small buds and small leaves the top ones will grow bigger and heavier. The top buds will also get more light because they’re all at the same height. Download my free marijuana grow bible at this link for more information about pruning techniques.


Pruning should only be done during the vegetation stage because the plant needs time to recover and grow big leaves.  Wait at least 3 days after pruning before forcing them into flower. Make sure your marijuana plants are growing again and drink enough water. Go easy on the fertilizers and give them a few days to recover. If you have mastered this technique and do it at the right time it will definitely pay off. No more small and fluffy buds. You will only get big, hard, and heavy marijuana buds.

Check this video and try it with one plant first to see how it reacts before you fuck up all your plants.

If you use the SCROG (Screen of Green) method you also have to prune your marijuana plants. Place a screen at 50 cm above your plants. Take the top out of every plant when it’s 10 centimeters from the screen and wait until the new tops grow through the screen. Wait until they grow 10 centimeters through the screen, gently bend them and connect them to the screen. Prune your marijuana plants after the first shoots have grown through the screen. Wait a few days and force them into flowering. During the first two weeks of the flowering phase your marijuana plants will keep growing. Check this article for maximum yields how much marijuana can one plant produce?


Combine the pruning and the SCROG technique and you can grow 1 gram of marijuana per watt of light. So if you have 1 600watt HPS bulb you should be able to grow 600 grams of cannabis. Temperature, humidity and other factors also have to be right of course.

Prune your own plants?

If you want start growing marijuana download my free grow guide and order some high quality seeds at this link here. We ship seeds to the US, CA and many other countries. For any growing related question please visit the marijuana support page.


The founder of I Love Growing Marijuana, Robert Bergman, is a marijuana growing expert that enjoys sharing his knowledge with the world. He combines years of experience, ranging from small-scale grows to massive operations, with a passion for growing. His articles include tutorials on growing... [read more]


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  1. By Andy ,24 Feb 2013
    really nice article. for me as a beginner, it was really interesting and useful! thanks
  2. By Midowo ,04 Sep 2013
    I know this technique but I don't understand how it can work because if you stress your plant by removing those lower branches it would stuns the growth and those lower leafs are also giving energy to those top buds.
  3. By carrie222 ,13 Oct 2013
    Midowo comment: no offense man, but if it works, as is evidenced by many growers and articles (and you haven't tried it in your own grow environment), what difference does it make if you understand (or don't) the how it […]Read More
  4. By adrian ,22 Oct 2013
    can you use the scrogging method with auto strains
  5. By illusionist808 ,04 Aug 2014
    Yeah... I gotta agree with Andy. I'm a new medicinal user & to me, this is gonna be worth it's weight in gold (or green~LoL). I can't wait to give all these great ideas a try. I'm really interested in […]Read More
  6. By Dan ,03 Jul 2016
    To prune or not to prune, that is the question. Actually I think it's when to prune not if. I'm surprised there is no mention of growing, pruning and harvesting by the moon phases. It is well documented and proven […]Read More
  7. By Simon ,06 Jul 2016
    Good article! I think other side we should care about is watering for plants. According to my experience, using some water gel (like potassium polyacrylate) can increase 15% yield at least.
  8. By Artemis2318 ,17 Oct 2016
    Hi! Great article. But I just want to say that not all marijuana strains respond well to pruning. Its still better to research well about the specific strain you are growing. Anyway, this is helpful info especially for new growers.
  9. By Rowa ,05 May 2018
    With the ( renewed resurgence) of interest in home grown weed plants, I have had only a 20% harvest rate, seeded insides and then gone wild, but my quality was top shelf, crystallized, purple strains, I like to grow outdoors […]Read More

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