Black Widow Strain

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Black Widow is a Sativa dominant strain. Throughout history, ‘black widow’ has not only been used as a nickname for famous people, but most especially, the infamous ones.

From suicide bombers to serial killers, musicians to sportspeople, book to TV and movie fictional characters, people have always found good use for the nickname.

So, where did the nickname came from? It is probably taken from a species of spider with deadly venom, aptly named Black Widow.

While the Sativa Black Widow certainly is not deadly, it was also not always called by that name.

Regardless, it is exceptionally potent and guaranteed to turn grumpy to jolly, as it gives a tremendous boost to how one is feeling and brings them on a cerebral high.

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    From what we have gathered, the original strain called White Widow was a creation of Green House Seeds.

    One of the co-owners, Shantibaba, took the parents with him when he left the company to found Mr. Nice Seeds.

    Using the South Indian Indica father and Brazilian Sativa mother, he recreated the strain and renamed it Black Widow.

    Don’t want to read? Watch the strain review on Vimeo or YouTube!

    Black Widow weed strain attributes:
    ORIGINBrazilian Sativa and South Indian Indica
    EFFECTSRelaxed – 10
    Euphoric – 8
    Happy – 8
    Uplifted – 7
    Focused – 6
    Dry eyes – 7
    Paranoid – 2
    Dizzy – 2
    Anxious – 1
    FRAGRANCESkunky, fruity
    FLAVORSSweet, woody, chemical, nutty
    MEDICALStress – 10
    Pain – 8
    Depression – 5
    Muscle Spasms – 5
    Fatigue – 4
    FLOWERING TIME OUTDOORSLate September to early October
    PLANT HEIGHT3 feet indoor; 6 feet outdoor
    THC CONTENT %15% to 28%
    CBD %0.1% to 0.73%
    INDICA / SATIVA %35%/65%
    INDOOR YIELD12 to 16 ounces per square meter
    OUTDOOR YIELD11 to 14 ounces per plant
    GROWTH LEVELEasy to grow
    RESISTANCE TO DISEASEResistant to pests, mildew, and molds

    * 10 is the highest
    * 1 is the lowest


    Black Widow is going to deliver a powerful kick, so potent that it is not recommended for novice users, let alone first-time smokers.

    With a THC that has been tested at up to 28%, this is one of the most potent cannabis strains.

    Almost at the onset, Black Widow causes a buzzing head high that intensifies to euphoria. How can one not be happy about feeling elated?

    buy BLACK WIDOW seeds

    No matter how stressed you are, and we know stress causes one to have difficulty on focusing, the Black Widow takes care of that, but only is used in a small quantity.

    Start consuming more and the cerebral high it brings may leave one locked to a couch, though.

    Black Widow Effects
    Black Widow Effects – Image powered by

    Black Widow also gives a moderate body relaxation, which at times is overwhelmed by the intensity of the head high.

    So, depending on how you tolerate the potency of this strain, you are either more focused and feel good about what you are doing, or you could stay on the couch and absorb the awesome euphoric bliss.

    This strain is best used in the late afternoon or evening.


    Black Widow does not only have potent effects, but it also has a strong sweet and skunky odor with a fruity overlay of pine. Definitely, it has the fragrance and you are bound to find extremely agreeable.


    And if the fragrance itself is good, the you will be glad that the Black Widow tastes like how it smells, with an aftertaste of nuts. Incredible effects and delicious to taste, this strain is highly irresistible.

    Adverse Reaction

    As mentioned, this is not a strain for those with low tolerance and novice users.

    The powerful kicks set in as soon as one starts using this medical cannabis.

    In some cases, the sudden rush of euphoria and unfamiliar sensation may lead one to panic. So, yes, paranoia is one adverse reaction you want to be aware of.

    Also, cannabis consumers are well-familiar with a common reaction, and that is your mouth and eyes feeling dry.

    Another reaction you want to be aware of is feeling dizzy, which is actually a normal reaction to the cerebral high.


    No, this strain is not going to deliver a deadly venom to your body. Rather, it has medical benefits.

    One benefit of the Black Widow is that it could boost your focus, and with that, it also dampens the fatigue you feel, which actually allows you to function better. But that is only if you use a very small amount.

    Black Widow Medical
    Black Widow Medical

    Now, the most popular medical use of Black Widow is in the result of how it induces the cerebral high.

    Because it uplifts one’s mood and bring a high level of elation, then it follows that it helps in management of stress, anxiety disorders, depression, and even bipolar conditions and PTSD.

    It still retains its Indica property, which also helps in the alleviation of chronic pains.

    Because it does have a sedative like quality, the Black Widow could also help people with trouble sleeping.

    Download my free marijuana grow guide and start growing Black Widow strain

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      Black Widow is a relatively easy strain to grow. It is also resistant to pests, mildew, and molds, which makes the task of caring for it easier.

      As it grows, you could expect to see dense bright green buds with purple and orange hairs with frosty trichomes during flowering.

      You also have a choice of growing this plant indoor, outdoor, or in greenhouses.

      While it grows up to 3 feet indoors, Black Widow could grow as tall as 6 feet in an open environment.

      Black Widow Growing
      Black Widow Growing

      Flowering Time


      Curiously, the Black Widow may not grow as tall as when grown outdoors, but the yield is higher when grown indoors.

      That means if you are to invest in larger grow tents with ideal lighting and other accessories, and using the Sea of Green (SOG) method, you might even increase its yield.

      The expected average yield in 8 to 9 weeks should be around 11 to 16 ounces per square meters.


      The Black Widow thrives outdoors and could grow to as tall as 6 feet.

      It does love the warmer climate and lots of sunshine.

      So, during harvest at late September to the early parts of October, you might expect to have a yield of 11 to 14 ounces per plant.

      Black Widow is great for boosting the users focus, and eliminating any fatigue when taken in appropriate doses.

      If you’re seeking a strain that’s a great booster for your productivity, then make sure to check our Black Widow seeds in the ILGM seed shop!


      1. Brazilian Sativa
      2. South Indian Indica

      FAQ About Black Widow Strain

      What is the Black Widow strain yield?

      Black Widow yields 12 to 16 ounces per square meter indoors and 11 to 14 ounces per plant outdoors.

      How much THC does Black Widow have?

      From 15% up to 28%.

      What are the origins of the Black Widow strain?

      Black Widow was created from a mix between Brazilian Sativa and South Indian Indica.

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


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      Afghan Kush | Agent Orange | AK-47 | Alaskan Thunder Fuck | Amnesia Haze | Berry White | Blackberry Kush | Blue Cheese | Blue Dream | Blueberry | Bubba Kush | Cheese | Chemdawg | Cherry Pie | Chocolope | Death Star | Durban Poison | G13 | Girl Scout Cookies | God’s Gift | Golden Goat | Gorilla Glue #4 | Grape Ape | Green Crack | Harlequin | Headband |Hindu Kush | Jack Herer  | LA Confidential | Lemon Haze | Lemon Kush | Mango Kush | Master Kush | Maui Wowie | Northern Lights | OG Kush | Pineapple Express | Platinum Girl Scout Cookies | Purple Kush | Purple Urkle | Skywalker | Skywalker OG | Sour Diesel | Strawberry Cough | Super Lemon Haze | Super Silver Haze | Tahoe OG Kush | Trainwreck | White Rhino | White Widow

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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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        Black Widow Strain Review

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        7 comments on “Black Widow Strain”

        1. planted 6 seeds (2 at a time) only one went past seedling. hope to clone. —-have grown 18 white widow very few problems.

        2. I’m starting to grow I need to know after terminations how long does it take to start flowering. Black widow

        3. Just got thru my first week of growth, keeping a highly detailed journal of the grow. Will post results around July/August

        4. Paul, That is awesome to hear. Thanks for your comment. Perhaps you would like to share images of your success. Go to: and tag me “latewood” I owuld love to see how pretty your flowers are. Happy growing. 🙂

        5. I live in lower michigan , and grow in a skylight facing south east. I am growing 2. Black widow and 1. Larry og from seeds found in dispensery bought flower. All 3 are female and 2 weeks away from harvest in early oct. easiest and healthiest plants i have ever grown. Smells incredible thus far, and are Frosted in white

        6. Black Widow from assortment pak, July 29th, outdoors in Michigan, is 6′ ROUND, thick bush. Flowering just beginning.