M-39 Strain

While some people use cannabis for the mere purpose of satisfying their curiosity or as a way to prove themselves deserving of belonging to a particular clique, others actually have a deeper respect towards the plant.

For avid supporters of cannabis – and we mean those who give greater importance to their medicinal value and other benefits rather than their social benefits, they believe that these plants are worthy of recognition.

That being said, there are quite a number of strains in the market today that have been recognized for their significant contribution to the cannabis community. Take the M-39 strain, for example. In 2013, it belonged to Time magazine’s Top 10 Canadian strains of all time.

Now, let us see what makes this strain worthy of such award.

The M-39 strain is a cross between the Northern Lights No. 5 and Skunk No. 1 that was originally developed by the Super Sativa Seeds Club. Back then, the Northern Lights No.5 was thought to be a different type of strain called Basic No. 5.

It was created in Canada and is considered to be one of the oldest forms of cannabis strains. For many years, M-39 was considered as more of a commercial strain that does not really do much in terms of potency but was only good for business.

It is important to note that the M-39 strain we know today is actually just a clone-only strain.

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    Information about M-39:

    ORIGINNorthern Lights No. 5 and Skunk No. 1
    EFFECTSRelaxed – 10
    Sleepy – 8
    Hungry – 7
    Happy – 6
    Euphoric – 5
    Dry eyes – 3
    Headache – 2
    Paranoid – 1
    Dizzy – 1
    FLAVORSWoody, skunky, tobacco, citrus, lemon, pine
    MEDICALStress – 10
    Insomnia – 8
    Fatigue – 8
    Depression – 5
    Pain – 4
    FLOWERING TIME OUTDOORSMid to late October
    THC CONTENT %12% to 20%
    INDICA / SATIVA %60%/40%
    INDOOR YIELD10 to 14 ounces per square meter
    OUTDOOR YIELD18 ounces per plant
    GROWTH LEVELEasy to grow
    RESISTANCE TO DISEASEResistant to mold

    * 10 is the highest
    * 1 is the lowest


    With a THC level of at least 12% and a maximum of 20%, the M-39 strain has a relatively moderate to high potency level.

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    However, some of the strain’s notable physical and cerebral high includes giving users a sense of euphoria, uplifted mood, improved focus and creativity, feeling relaxed and sleepy, and improved appetite.

    M-39 Effects
    M-39 Effects – Image powered by Marijuana.com

    With 60:40 ratio of Indica/Sativa content, you can tell how the strain has a more balanced high compared to other types of strains in the market. That being said, it can be a good choice for a daytime or afternoon pot session.


    The fragrance of M-39 may not be as attractive as other strains. It is known to have a diesel-like aroma which, for the uninitiated, might be compared to diesel fuel. But the aroma of M-39 infuses the classic smell which some users find appealing and suggestive of strong potency.

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    Surprisingly, its diesel-like aroma does not entirely affect its actual taste. The M-39 strain is known to have a flavor that seems like a combination of tobacco, lemon, pine, and citrus, as well as the addition of a woody and skunky overall taste.

    Adverse Reaction

    Just like every other strain in the market, the M-39 also has the potential of causing some of the most common adverse reactions of cannabis in general.

    M-39 Adverse Reaction
    M-39 Adverse Reaction

    These unfavorable reactions include dry mouth, dry eyes, headache, dizziness, and paranoia. The severity may vary, but out of these five negative reactions, there is a greater possibility of contracting dry mouth depending on your body’s level of tolerance to the strength of the strain.


    Every well-informed cannabis user knows that the CBD level of a cannabis says a lot of how useful the strain can be for medical usage. Basically, it is the strain’s scientific evidence to prove its medicinal value.

    However, as you can tell, M-39 strain has no known CBD level or at least a well-supported data about this particular information. Regardless of the lack of verified information, users claim that the strain can still be useful in various medical conditions based on both its mental and physical effects.

    It is known to help reduce stress and anxiety, improve the user’s mood which will further help address depression and can even aid in cases of insomnia and nausea. It is also said to be effective in alleviating chronic pain, fatigue and increase your appetite.

    Other sources would tell you that the strain may be helpful for those people suffering from Glaucoma, Attention Deficit Hyperactivity Disorder and Bipolar Disorder.

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      This is another aspect of the M-39 strain that has a very limited information available to the public.

      M-39 Growing
      M-39 Growing

      However, here are some useful data that you can refer to in case you plan on cultivating your own M-39 at home.

      Fortunately for this particular strain, it can easily be grown either indoors or outdoors. This is generally due to the fact that the plant is highly resistant to mold just like most Indica-dominant strains. However, expert growers say that the M-39 grows better and quicker indoors.

      At the same time, it does not grow excessively tall which makes it a lot easier to trim and maintain its branches.

      Note that there are no specific weather conditions suggested by growers and other related sources. This part may take a few trial and errors before you can actually determine the perfect environment for your strain.

      Flowering Time


      When grown indoors, one can expect for the flowering time to last about 8 to 9 weeks before they are ready for harvest. Once they are mature enough, your expected indoor yield should be 10 to 14 ounce per square meter.


      As for the outdoor cultivation, the flowering time should be until mid to late October. After such time, you are expected to gain an outdoor yield of 18 ounces per plant.

      Have you ever smoked or grown your own M-39? Please let me know what you think about this marijuana strain in the comments below.


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      Robert Bergman

      Robert Bergman is an Amsterdam-based marijuana grow expert who has years of experience from small grows to massive operations. His passion for growing led him to develop his own Gold Leaf strain. Now, Robert is dedicated to sharing his knowledge with the world.... [Read full bio]


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