Auto Critical Mass feminized seeds



Auto Critical Mass: Dense Buds Reaching Critical Mass

Auto Critical Mass was created by crossing the popular Critical Mass with a Ruderalis strain, to deliver those autoflowering genetics for an easy grow.


With a total growing time of 9 – 10 weeks, this plant can go from seed to use in what seems like no time at all. With an indoor grow reaching heights of up to a meter, this strain is perfect for those working with limited space. For newer growers, a soilless growth medium such as coco coir and small amounts of vermiculite in the beginning, then topping up to a reasonable level allows you to keep the water drainage levels consistent maximizing air flow and therefore yields. Indoor growers can expect to achieve a yield of 400 – 500 g/m2.  

  • Medium height – indoors: 80 – 100 cm, outdoors: 100 – 150 cm;
  • Max EC of water: 1.0 in veg, 1.2 in flower;
  • Water pH: 5.8 – 6.0;
  • Recommended growing techniques: LST – minimize stress-induced problems with low-stress training techniques;
  • Recommended growing medium: Soilless – use a 70:30 mix of coco coir and vermiculite to give your roots the right balance between water and air.

A Sweet Blend of Energy And Relaxation

Auto Critical Mass will be able to deliver 14% of THC with soothing fruity flavors and earthy undertones all packed into dense, resinous buds. The hybrid nature allows for a combined body and mind effect, perfect for those who like to unwind after a long day.



  • Brand

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

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    Advanced 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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    Huge mass of pleasure
  • Genetics

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

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    Critical Mass
  • Height

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

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    80 - 100 cm indoors
    100 - 150 cm outdoors
  • Harvest

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

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    400 - 500 g/m² indoors
  • 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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  • From seed to harvest

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

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    60 - 70 days
  • % Sativa/ Indica/ Ruderalis

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

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    Indica dominant
  • THC

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

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    14 %

*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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