Critical Mass Automatic feminized seeds



An Old-School Legend in Even Less Time!

Critical Mass Auto is an autoflowering cannabis strain brought to you by Big Buddha Seeds as a cross between the legendary Critical Mass and an in-house autoflower to yield one the best performing autoflowering cannabis strains on the market today – an all-round, well-performing Indica.


Like most autoflowers, Critical Mass Auto is sensitive to stress but she is forgiving to most beginner mistakes so if you’re new to growing, don’t be discouraged! More experienced growers will have no problems with this fast-growing Indica-dominant autoflower and can expect to pull 75 g per plant indoors and twice as much outdoors! This strain goes from seed to harvest in as little as 9 weeks – perfect for those looking for a quick harvest of potent, high-quality cannabis. Here is some further information to help you grow this strain:

  • Short plant – even though she is 40% Sativa, Critical Mass Auto stays short, bushy and below a metre in height.
  • Max EC of water – 1.0 in veg, up to 1.2 during flower.
  • Water pH; 5.8 – 6.0
  • Best grown using at least 600 W of LED/HPS lighting.
  • Ideal for SoG – sea of green style grows can boost yields.

Critical Mass Auto - Dense and Heavy Buds

This strain has a classic smell and taste – a pungent hash-like aroma which intensifies as her terpene profile complexes towards the end of flower. In addition to her nostalgic taste, Critical Mass Auto has a calm, relaxing effect which is best enjoyed in the evenings.



  • Brand

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

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    Big Buddha 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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    Critical stone
  • Genetics

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

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    Critical Mass x Big Buddha’s 3rd Gen Automatic
  • Harvest

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

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    75 g/m² indoors
    150 g/plant outdoors
  • From seed to harvest

    Total time required to fully grow a plant, from germination to harvest.

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    63 - 84 days
  • % Sativa/ Indica/ Ruderalis

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

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    40% Sativa / 60% Indica

*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.

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