Critical XXL Feminized Seeds (Herbies Seeds)



Critical XXL Strain Info

Critical XXL represents a new touch on the famous Critical genetics. Meticulously bred in Spain by Herbies Seeds, this 35% Sativa/65% Indica hybrid delivers a supreme high and offers exceptional yields that will make countless growers very, very satisfied.


This strain’s lineage includes the all-time classic Skunk #1 as well as Afghani and Critical Mass genes, which are responsible for its potency and massive yields. Skunk #1 is known for its heavy, stoney-headed high coupled with deep body relaxation. Make no mistake: these legendary traits manifest themselves in Critical XXL, too.

Flowering Time

You can plant your Critical XXL seeds outside and inside, but we recommend growing indoors. In this case, you can expect a flowering time of 50 to 55 days.


If you’re growing indoors, you can expect higher than average yields of 500-600 grams per square meter (1.6-2 oz/ft²) and 1300-1600 grams (46-56 oz) per plant outdoors.


Critical XXL is very powerful and is best suited for nighttime smoking, although you can use it for quiet relaxation earlier in the day. Due to its high THC content and practically no CBD, this strain delivers a deep and peaceful body high with mostly Indica effects.


THC Levels

The potency of Critical XXL’s high is a stand-out feature due to the exceptionally high THC levels ranging from 24 to 27%.

Smell and Taste

Critical XXL sports a strong spicy smell with lemon notes, so you’ll be sure to have some delicious smoke sessions! This strain’s terpene profile is dominated by myrcene – one of the most common terpenes found in cannabis – that gives weed an earthy scent and taste.


Grow Tips

This strain thrives in any environment, but you might want to give her ample space since she’ll reach a medium height. Indoor-grown plants can reach from 100 to 120 cm (3’2-3’9), while outdoors, they can grow to 120-150 cm (3’9-4’9) in height. Critical XXL will impress cannabis enthusiasts because with this girl, you’ll get solid frost-covered buds in a very short time.

  • Critical XXL enjoys an 18/6 light schedule while in veg. When she’s ready to flower, switch her to a 12/12 schedule.
  • Start your seeds in at least 10-liter pots to give the roots enough space for growth.
  • The plants could do with topping and SoG to maximize their already generous yields.

Critical XXL Seeds

If you’re looking for hard-hitting weed that won’t be too demanding to grow, look no further than Critical XXL feminized seeds from our seedbank. We offer a variety of shipping options and payment methods so that your online shopping experience will be as pleasant as possible. Just hit that “Buy” button and you’re all set!


  • 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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    Critical relaxation
  • 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
  • Height

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

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    100 - 120 cm indoors
    120 - 150 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
    1300 - 1600 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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    50 - 55 days
  • % Sativa/ Indica/ Ruderalis

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

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    35% Sativa / 65% Indica
  • THC

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

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    24 - 27 %

*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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