Critical XXL Auto Feminized Seeds (Herbies Seeds)


Critical XXL Auto Strain Info

With Critical XXL Auto by Herbies Seeds, it’s impossible to be critical of this herb’s powerful smoke and citrus fragrance blended with earthy and woodsy notes. Critical XXL Auto is an Indica-dominant hybrid (85% Indica / 15% Ruderalis) that reaches up to 23% THC, delivering an intense and long-lasting body high that can help if you’re having trouble sleeping.


Critical XXL Auto has its genetic roots in the revered Skunk #1, while its family tree also includes a mountain-born Afghani parent and the Indica-dominant Critical Mass crossed with a Ruderalis to add autoflowering genes.

Flowering Time

This strain takes from 70 to 80 days on average to grow from seeds to harvest, making it a delight for commercial growers.


When grown indoors, Critical XXL Auto brings in from 400 to 500 g/m² (1.3-1.6 oz/ft²). Outdoor growers can expect to harvest as much as 800-900 g (28.2-31.7 oz) per plant.


Critical XXL Auto works well as nighttime stuff for laid-back smokers who love to sit back and chill. It produces potent sedating effects that result in a deep and relaxing body high. However, you may also dare to add to your daytime routine, as it induces a sense of happiness and creativity.


THC Levels

The strength of Critical XXL Auto’s high is courtesy of THC levels ranging from 17 to 23%, making it one of the strongest autoflowering varieties on the market.

Smell and Taste

This strain’s terpene profile is characterized by a sweet aroma and taste with earthy, woody notes.


Grow Tips

Critical XXL Auto by Herbies Seeds is an autoflowering marijuana strain that goes easy on beginner growers. It’s hardy and can be planted both indoors and outdoors, yielding a large number of dense XXL-sized buds with a sticky, frosty coating.

  • In indoor grows, the plants can reach from 90 to 110 cm (3-3’6)  in height, while outdoors, they typically grow 110-130 cm (3’6-4’3) tall.
  • This strain is easy to grow and tough enough to deal with slight temperature and humidity changes.
  • It performs well in SOG and ScrOG setups.
  • It doesn’t require heavy pruning and doesn’t respond well to the main stem being pruned.

Critical XXL Auto Seeds

One of the most powerful autoflowering varieties out there, Critical XXL Auto is a good choice for beginner growers looking for powerful body-stone effects. At our online megastore, you can order Critical XXL Auto seeds online at a reasonable price in no time!


  • Brand

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

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    Herbies 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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    Outdoor, Indoor
  • Effect *

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

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    Laid-back vibes
  • Genetics

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

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    Skunk #1 x Afghani x Critical Mas x Ruderalis
  • Height

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

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    90 - 110 cm indoors
    100 - 130 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
    800 - 900 g/plant outdoors
  • From seed to harvest

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

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    70 - 80 days
  • % Sativa/ Indica/ Ruderalis

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

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    85% Indica / 15% Ruderalis
  • THC

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

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    17 - 23 %

*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.

  • madonna
    11 September 2023
    11 September 2023
    • Advantages
      It's worth highlighting the relaxing effects of this strain, which were quite pronounced. Additionally, the ease of growing it is a major plus. I didn't employ any training techniques, yet I still managed to harvest an impressive 387 grams.
    • Disadvantages
      Nothing to speak of
    • General impressions

      I have an overall positive impression of this strain. The relaxing effects and the straightforward growing process make it a winner in my book. I'm already planning to order these seeds again for future cultivation.

  • Humboldt
    19 December 2023
    19 December 2023
    • Advantages
      The 23% THC content in this strain is just perfect for my preferences. It being an auto strain meant it didn't require superhuman efforts to grow. I enjoyed the anticipation and was attentive to various training methods. It was a smooth journey filled with only good vibes!
    • Disadvantages
      I can't complain about anything – it's all good.
    • General impressions

      This strain offers a sweet aroma and taste with earthy undertones, creating a delightful sensory experience. The effects were deeply relaxing and calming. I would wholeheartedly recommend it to anyone looking for a pleasant and manageable growing experience coupled with a balanced THC content.