Extreme XL Supa Gro Kit 100% 'McKennaii’


Supa Gro's Extreme XL Grow Kit Mckennaii contains 2.1 liters of mycelium that will surely turn out large amounts of Psilocybe cubensis McKennaii mushrooms. These powerful shrooms pack a punch! Supa Gro’s unique grow boxes, stuffed to the brim with mycelium-colonized cake, make the entire process easy and convenient. No pre-prep activities or soaking required.

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Extreme XL Supa Gro Kit 100% - McKennaii: Copious amounts of powerful shrooms

Psilocybe Cubensis McKennaii is an even stronger strain of Magic Mushrooms than the more famous - and harder to cultivate - Hawaiian strain. McKennaii shrooms guarantee a colorful and powerful trip to outer space!

This Extreme XL Supa Gro kit contains all you need to grow an extra-large crop and contains 2100ml of mycelium, which also can be used for several flushes.

The grow boxes are constructed with a special technology, and specific fillers are used so you don’t have to soak the kit before setting up for your first flush. The included Supa Gro bag allows for clean air circulation.

Supa Gro magic mushroom grow kits are grown by mycological experts and contain extremely healthy mycelium.

Supa Gro Manual

Scope of delivery

  • 2100ml Grow Kit
  • Grow Bag

Use Our Magic Mushrooms Dosage Calculator

Extreme XL Supa Gro Kit 100% 'McKennaii’ data sheet
Volume 2100ML
Brand Supa Gro
Strain McKennaii

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Reviews (61)

    Works great!
    Had some trouble at first but the support helped me out. This works as advertised!


    Worst kit I ever bought, so disappointed
    This is really a pain in the ass, 84€ to get way less than a normal kit. I have a thermostat that keeps the kit at 23 degrees, I did exactly as it says. Not my first kit, but definitely the worst I had and the most disappointing because it cost 2 times the price of a simple kit... I won’t buy kits anymore, way too much money for too much uncertainty.


    Lasciate perdere
    Pacco arrivato Come prestabilito Purtroppo la prendo la scatola vera e propria della Kit hanno dato che non c'era un Sigillo di manomissione non preoccupandomi troppo.... ma dopo un po' di tempo è comparsa della muffa Purtroppo questo Kit non era stato ben sterilizzato quando è stato spedito meglio acquistare direttamente le spore e farle Per conto proprio


    Great kit!
    4 stars because my mistake... Highly recommend! Good strength...


    Agradecido con Zamnesia.
    Era la primera vez que probaba un kit supa gro y lamentablemente no pudo sacar los brotes que buscabamos. Me puse en contacto con zamnesia y tras varios consejos tampoco pudimos salvarlos. Estuvieron muy atentos del seguimiento y supieron compensar con creces este inconveniente. Una vez mas, muy satisfecho con el trato, la atencion y la forma de trabajar de este equipo.


    Champignon puissants, rendement correct
    Une bonne première flush mais une deuxième beaucoup plus décevante, choc au froid fait ce matin, la 3eme flush sera en route ce soir ;) De par expérience les mckkenai peuvent surprendre par leur irrégularités de rendement à chaque flush, la dernière box m'en a fait 7 ;) la plus grosse étais la 4 ème ;) Voyage garanti avec cette variété


    Im doing first flush right now and there is litterly minimum 100 Mushrooms, they shoot up like weeds. They the biggest cluster i have in my grow kit counts 28 Mushrooms. Im impressed


    i had 4 good flushes


    Sadly contaminated..
    Ordered this kit since I had previously good results with the smaller kits. I did everything sterile and followed the manual instructions, sadly the kit didnt really started and had some contamination in it. I contacted helpdesk and they were verry friendly and helped me really good and followed up their advice, sadly this didnt worked out. I managed to harvest only 4 shrooms from the kit. But the helpdesk offered me a great solution which I'm verry pleased with, so instead of one star I'll give it two for the great service they provided me. NL


    Super schneller Service
    Meine letzte bestellte super XL Grow Box,ist nach denn ersten Flash kaputt geworden,denn es kommen keine Pins mehr.hab sie 12 Stunden im Wasser im Kühlschrank gegeben wie meine anderen Grow Boxen. Und seit dem kommen keine Pins mehr. Das ist schon 4 Tage her.bei meine anderen Boxen sind die Pins nach spätestens am 2 tag gekommen. Mfg

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Extreme XL Supa Gro Kit 100% 'McKennaii’
Extreme XL Supa Gro Kit 100% 'McKennaii’