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Black Jack feminized seeds


Black Jack Seeds Info

Available as feminized seeds with an equal mix of Indica and Sativa, Black Jack is well-suited for growing in both cold and warm environments, indoors or outdoors. The smoke will give you a boost of happiness while keeping you extra relaxed for quite some time.


A direct descendant of Black Domina and Jack Herer, Black Jack is like an encyclopedia of Old World genetics. Her family tree includes Northern Lights, Ortega Indica, Hash Plant, Afghani, Shiva Skunk, and Haze – amazing seeds, every one!


Buds grown from these seeds will relax you while making you feel undeniable happiness and euphoria with the right amount of energy – perfect for stress relief and lessening depression.

THC And CBD Levels

THC levels hover around 16-20% when harvested at the right time, while the CBD content remains at 1%. This is enough for Black Jack to draw its serious healing properties from both cannabinoids.

Smell And Taste

Black Jack has an herbal and sweet yet spicy and woody flavor, almost incense-like, with just a touch of citrus. This makes for a very interesting mix of terpenes to help these seeds seriously stand out from the crowd.


Outdoors, these seeds guarantee about 500-700g (17.6-24.7oz) per plant. Grown in a tent, they yield about 500-600g/m² (1.6-2oz/ft²).

Flowering Time

Black Jack needs 9 weeks to bloom indoors and is ready to harvest in early October if you choose to plant these seeds outside.

Grow Tips

Growing this resinous lady doesn’t require a lot of experience. In fact, a novice grower can have a successful cultivation following just a very basic routine. Black Jack can reach 3m (10ft) in height if planted outdoors, becoming a beautiful giant with many hairy heads. If planted indoors, the plant behaves more moderately, growing to only about 1m (3.3ft).

  • Control the height indoors with the size of the container.
  • Make the veg longer to get bigger plants at harvest.
  • She’s a branchy plant, so be sure to prune lower branches and defoliate.

Black Jack Seeds

Offered at a very attractive price, these feminized seeds are extremely rewarding and capable of providing you with truckloads of bud of the highest quality.


  • Brand

    AKA seed bank. They create and preserve cannabis genetics, then we get them to you.

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    Sweet Seeds
  • Type of seeds

    Regular or feminized. Pick feminized if you want female plants only.

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  • Type of seeds

    Either autoflowering or photoperiod. Both have their pros and cons, but growing autos is easier.

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  • Suitable for growing

    This strain is perfect for growing both indoors and outdoors.

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    Indoor, Outdoor
  • Effect *

    Each strain produces a certain effect on your body. This is what you can expect from this variety.

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    Peaceful warrior
  • Genetics

    Genetic composition of the strain. Shows parent strains that were used to create this particular variety.

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    Black Domina x Jack Herer
  • Awards

    Exceptional strains receive awards from the industry. If a strain has awards to its name, it's a sign for you to try it.

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    Multiple Cup Winner
  • Height

    This is how tall the plant can become. Use this info when planning your grow space.

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    300 cm outdoors
  • Harvest

    This is how much bud you can get from this variety come harvest time.

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    500 - 600 g/m² indoors
    500 - 700 g/plant outdoors
  • Indoor flowering time

    The length of the flowering stage for photoperiod strains, or seed-to-harvest time for autoflowers.

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    63 days
  • Outdoor finish

    This is when your plant will be ready for harvest when grown outdoors. Make sure it's still warm enough by then!

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    Early October
  • % Sativa/ Indica/ Ruderalis

    The ratio of Sativa/Indica/Ruderalis in this particular variety.

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    50% Sativa / 50% Indica
  • THC

    The main psychoactive compound in cannabis. The higher THC level, the more potent the strain.

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    16 - 21 %
  • CBD

    This compound doesn't get you high but is known to be highly medicinal and calming.

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    1 %

*Herbies sells cannabis seeds exclusively as souvenirs that aren’t meant for cultivation or germination. Customers should be aware that the germination of cannabis seeds is illegal in most countries. Herbies sells cannabis seeds exclusively for collecting and preservation for future generations. We advise customers to check with their local laws before germination, as Herbies does not accept responsibility for the illegal use of our products.

  • Drake
    12 May 2020
    12 May 2020
    • Advantages
      Good smoke with interesting smell and nice high :)
    • Disadvantages
    • General impressions

      This strain amazed me :) Feel uplifed and happy :)

  • Southerner
    27 August 2020
    27 August 2020
    • Advantages
      Smells great
    • Disadvantages
      Nothing yet
      Will let you know if any
    • General impressions

      I am impressed! The smell is so sweet, but with slight touch of floral to it. It's scent cuts through all the other plants growing around it. Really nice trichrome development as well. This is day 53 of flower and it still has a while to go by the looks of it. I will grow this strain again for sure.

  • GvXThC
    17 September 2020
    17 September 2020
    • Advantages
      Great germination rate!!!
    • Disadvantages
      Can cause dry mouth
    • General impressions

      Nice strain. The germinating rate was 100%. It grows at standard rate, with a dominant not too branchy structure. The blooming is longer than expected, but with a decent amount of calyxes and trichomes, that are ready to harvest around the ninth flowering week.
      Citric and Earthy aromas with incense touches were observed during cultivation. The high is one of the best things of this variety, mixing the relax and happiness with a talkative and creative status.