Cloning Marijuana

What is cloning marijuana?

Put simply, marijuana cloning is the process of making an exact copy of your marijuana plant, meaning you can grow marijuana without having to plant a seed.

This guide on how to clone weed will cover everything you need to about cloning, the advantages and disadvantages, the equipment needed and an annotated step by step guide. You’ll never run out of bud again!

Why is it used and how does it work?

In short, the main reason people take to cloning marijuana is that it guarantees a female plant and many growers clone weed as it preserves and repeats the characteristics of their favourite plant.  It’s also a great way to share genetics with other growers.  In some medical marijuana dispensaries it is possible for the grower to purchase their desired genetics as there are marijuana clones for sale.
Marijuana Cloning
In the process of cloning marijuana, cuttings are taken from a “mother plant” in vegetative growth and are rooted to be grown as a separate plant.  In order to survive, marijuana clones must develop a rooting system. Your marijuana clones do this by using energy from carbohydrates stored within the cutting. Taking your weed cuttings from the lower branches means they will root faster and be stronger as these contain higher amounts of sugars than those taken from the tip of the mother plant.

The advantages and disadvantages of cloning marijuana

A female plant will produce 100% female marijuana clones.
Marijuana clones will have exactly the same desirable characteristics of your favoured mother plant.
Cloning marijuana is cheaper and faster than starting from seed.
There is no limit on the number of marijuana clones you can take.
You can clone from a clone.  In fact, it’s good practise to replace the mother plant after a year.

You open yourself up to a strain that is weak in potency and unresistant to pests and diseases.
If mother plant hasn’t been through flowering, you can’t be sure what characteristics the plant is going to have.
You cannot clone auto-flowering strains.
It limits your selection on genetics and pheno types.

How do you know when a plant is ready to be cloned? 

Knowing how to clone weed and when to do it is fundamental to cloning marijuana. You can clone at any stage in a plants life cycle but you really should clone your marijuana when your plant is in vegetative growth.  You are best off waiting until the plant has started to show its sex in pre-flower, which usually takes at least 4 weeks.

Cloning marijuana from a plant that is already in flower is possible,Mother Plant ready for cloning  however, it is not recommended as cuttings taken from a flowering plant can take a month or two to revert back to vegetative growth.

It is recommended that you take up to 50% more cuttings than you will need from the mother plant as some of your marijuana clones will not root and eventually die.  It is important that you do NOT use any supplements or nutrients on new marijuana clones, as this is when they are at their most vulnerable and cannot handle them.

Mother Plants

The plant you have chosen for marijuana cloning is called the mother plant.  Choosing a strong mother plant is important as your marijuana clones will grow exactly the same.

Your mother plant should be healthy as well as disease and pest free.
Pick a mother plant you know is female.
Wait until your mother plant is at least 4-5 weeks old.
Avoid picking a mother that hasn’t shown sex in pre-flower and is already in flower (it can take weeks to revert back to vegetative growth and your marijuana clones will yield less.
Prepare your mother by feeding her with a high phosphorous, low nitrogen fertilizer one week before taking your cuttings.

What rooting medium can be used?

There are numerous choices out there for your clone rooting medium.  Choose a medium that drains very well and withstands leaking without becoming saturated.

Medium Difficulty
Rockwool Easy
Jiffy cubes Easy
Oasis root cubes Easy
Fine vermiculate Moderate
Fine soil Difficult

What rooting hormones are can be used?

Use a rooting hormone that contains Indolebutyric Acid (IBA).  There are a number of different types of rooting hormone you can use that come in the following formats.

Rooting gel – Practical and easy to use.  Gels distribute hormones evenly along the stem.
Rooting liquid – Are the most versatile and consistent for cloning marijuana, penetrating the stems evenly.
Rooting powder – Powders tend to distribute unevenly and penetrate poorly. Recommended behind the others for marijuana cloning.

Marijuana Cloning Soltions


During marijuana cloning, it is recommended to keep clones under a weaker light source.  CFLs are preferred as HID lamps can often be too strong.  A warm light CFL with 2500k lumens 6 inches away from the plant is perfect.  If you only have HID, make sure they are 4 – 6 feet away.

How to clone weed – Step by step guide

There are numerous ways of cloning marijuana, and in the name of simplicity, this marijuana cloning guide will give you a technique that is straightforward and has a high success rate.

You will need the following equipment; rubbing alcohol, razor blades or scissors, hormone, rooting cubes (whatever you have chosen), plastic cups, a 2500k CFL bulb, labels and a marker pen to label your clones.  It’s no good cloning your plants if you don’t know what they are afterwards.

1. Before you start, you will need to make sure that everything you are using has been thoroughly cleaned, including any surface on which you are going to be placing your clones and/or utensils.

2. Choose your mother – Select a mother plant that displays the characteristics you want to reproduce, making sure you choose a healthy plant that is at least 4 -5 weeks old.

3. Select a strong and healthy branch that is 1/8 – 1/4 of an inch across on the mother.  Just above the third node down, make a 45 degree cut across the stem with a sharp blade or scissors.  Do not crush the stem in the process.

4. Trim off the lower two or three leaves making sure you cut them off at the node.  Plants like it when there are one or two trimmed nodes below ground.

5. Trim the remaining leaves in half horizontally across the leaf to keep them from overlapping and lower water evaporation from the clone.

6. Place the cutting into a plastic cup filled to 1/5 with water.  This will help prevent any embolisms from occurring.  Each cup will hold around 5 to 10 clones.

7. Soak the medium you are using with water and make a hole big enough for the cutting.  Put the rooting hormone you have chosen in a separate container (this avoids contamination).  Dip each cutting in the hormone solution up to the first node, making sure the solution has covered the stem evenly (follow the maker’s instructions).  Gently push the cutting into the medium.

8. Lightly water the medium evenly.  It is important that you keep the moisture levels up, as the clone has no roots to supply water to the leaves.  However, you can have too much.  A little tip for telling is by squeezing the medium.  If it drips or it is soggy, it means it has too much water.  Remove any excess water.

9. Label each cutting with the type of plant and the date you’ve taken the clone.

10. Put the clone under a fluorescent light bulb for 18 – 24 hours.  Make sure the marijuana clones are around 4 – 6 inches away from the bulb.

11. A more vigorous root system develops in your clone when the growing medium is a little bit warmer than the room temperature, between 3 to 5 degrees hotter than the ambient room temperature.  The best results come between 75-80°F.  You can heat the medium using either a heat pad or an incandescent light bulb placed below the cuttings.

12. Although some of them may wilt, your marijuana clones should return to normal by the end of the week.  If they have not, remove them from your grow.

13. New rooting systems will take 2-3 weeks to appear.  Check the root development by lifting the grow medium and checking that the roots have developed.  Once they have started to develop, you can move the lights closer (half the distance the lights were set at to begin with).

14. The final step is to transplant the clones, but only once they have developed fully functioning roots, making sure they have not become too big for their containers.

The detailed step-by-step guide on how to clone weed should have you cloning marijuana plants in no time, allowing you to re-grow your favorite strains with ease and precision. You’ll never be out of bud again.


25 comments on Cloning Marijuana
  1. harry fare

    You cannot clone auto-flowering strains.? why not ?

    also- I have cloned females when flowering but the vegetative growth stops
    and you end up with a BONZAI- it just does’nt grow tall.

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    Rating: -4 (from 20 votes)
  2. William

    Hello there my name is ‘” Will ” and was very impressed with your guide and so i copied and pasted it foe future reference. There are other foke’s that i would like to share it with.
    But i do not to infringe on any copy rights.
    It didn’t say who wrote it. So i has no way to give credit to.

    Please advise
    Best Wish’s


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    Rating: -1 (from 9 votes)
  3. Edward

    My clones develop nice roots but the tops die? Any thoughts

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    Rating: +2 (from 18 votes)
  4. mtholster69

    Those of you who need pics can go to YouTube for step-by-step instructions or Google weed cloning. There are tons of sites

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    Rating: 0 (from 6 votes)
  5. Saltwater Boy

    Joyce Twobirds, Chronic pain can be handled by Sour Diesel.Sour Diesel, sometimes called Sour D, is an invigorating sativa named after its pungent, diesel-like aroma. This fast-acting strain delivers energizing, dreamy cerebral effects that have pushed Sour Diesel to its legendary status. Stress, pain, and depression fade away in long-lasting relief that makes Sour Diesel a top choice among medical patients. This strain took root in the early 90’s with cannabis breeder Chem Dog, and it is believed to have descended from Chemdawg, Northern Lights, and a Skunk phenotype. I suffer from multiple disc injuries L1 through S1. I also have P.T.S.D., so I find that stavias help with those conditions. The best place to find out everything you need to know is on
    Good luck and I hope this helps. Stay Irie my friends.

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    Rating: 0 (from 14 votes)
  6. Mickey

    How many times can you clone from a mother plant?
    How many layers of cloning can be done, meaning, how many times can you clone a clone plant strain?

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    Rating: -3 (from 47 votes)
  7. Groot

    ( @ Mark -Can u clone to a grape fruit tree )

    That would be Grafting … Not Cloning

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    Rating: +1 (from 3 votes)
  8. Teenysteev

    Guys, check out Grow420Guide’s channel on YouTube. He has tons of videos from seed to cure. He definitely has some of the best cloning videos I’ve seen.

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    Rating: +14 (from 26 votes)
  9. Greenthumb420

    @ Bonnie weed strains that are gud with helping you sleep are Blue Mystic ,Bubba Kush, Vanilla Kush

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    Rating: +1 (from 7 votes)
  10. Karen

    Bonnie, try grandaddypurple for sleep and pain, & concentrates of the same= no more pain. have a broken back n osteochondrosis that causes severe pain. I’ve also always loved marijuana, lol. Grandaddy purple is great. My dr said NY CSour diesel was great for pain, although I do not prefer reg sour diesel. Bubba kush helps with your response to the pain and is great for daytime. Girlscoutcookie herb is alsi good for pain n the way you react to pain and insomnia.
    The only thing you need to watch for is the time of harvesting as far as couchlock with infica or paranoia with sativa strains. When the trichome liquid is BARELY turning from clear to amber(or clear to ‘not colorless’ but after the end of the trichome is bulbous and tight.)
    If it has ANY color to it after this, usually the first part of the amber color it’s harvest time! Now, UNLESS you prefer it a little different than mainstream or if your plant behaves differently at this time than others as in maturity of the plant, it may be a different harvest
    Any Indica dominant hybrid/topshelf should help pain. Also you can ask your dispensary budtender for advice for pairing bud with medical symptoms and diseases. Good Luck!!.

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  11. Joyce Twobirds

    I have chronic pain, also use marijuana for sleep and eating, can’t get my pain meds do to marijuana use, any ideas?

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    Rating: -1 (from 9 votes)
  12. catluvr

    You didn’t mention the method which is generally 100% successful: Air Layering!

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    Rating: +2 (from 12 votes)
  13. Walli420

    Paulette, The nodes are the growths that are coming out from between the new fan leaves and the main stalk…

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    Rating: -1 (from 9 votes)
  14. Walli420

    Bonnie, any Indica or Indica dominant hybrid. You can also check the crystals (trichomes)on the buds. If its a Sativa, but has yellowish or tan trichomes instead of bright white then it will probably be a good sleeper. Darker colored trichomes induce “couch lock” or not being able to move. One of my favorites for sleep is Headband or my wife really likes LA Confidential…

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    Rating: +5 (from 9 votes)
  15. Paulette Mestas

    Im brand new to this. Pictures on how to do each step would be very helpful. I don’t even know what the node is.

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    Rating: +6 (from 18 votes)
  16. trafficmusik

    Can you email me a picture on where to cut the plant for the cloning process. I will really appreciate it.

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    Rating: +5 (from 21 votes)
  17. bonnie

    I need sleep , can you tell me the name of weed to help me

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    Rating: +9 (from 19 votes)
  18. Rob from renton

    can you show where to take a clone and what to cut off of the clone?.. this site is great and all but I havent got any replys . and its seriously lacking in pictures

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    Rating: +5 (from 23 votes)
  19. Bonnie

    Are there plant that can be used as a sleep aid, I only sleep 2-4 hrs a night, if there are where do I get them , please HELP

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    Rating: +8 (from 16 votes)

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