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

Magic mushroom dosage calculatorCalculate

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

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Reviews (70)

    Cheap "filter" bag and tired genetics
    The kit was fully colonized, and there was a little myc piss on the edges, but the mycelium was exposed and abundant, so it was pretty normal. The bag that comes in the kit is a norma plastic bag with (very badly) drilled holes. No filters at all! Result: 1 flush not even 30g wet, 2 flush a single huge mushroom, then contaminants toke over. All the specimens were clearly from an old and tired culture, lots of mutations and odd things, those shroms looked like the ones you get after 7 flush... I buyed this kit with a half price discount, so not a huge loss, but still...a mediocre product.


    gasté 84€ y no m salió ni uno, llevé las instrucciones correctamente y solo aumento el micelio en la superficie, ya han pasado 2 meses y ha empezado ha pudrirse.


    pas facile a faire mais des bonnes resultats
    Le kits de supa gro c est evident que ce ne pas les plus faciles a faire mais en terme d effets j ai pas goute mieux. le kit est arrive chez moi en bon etat j ai demare toute suite la culture. les premiere tetes je les ai eut au bout des 2 semaines mais pas vraiment beaucoup comme dans la photo du produit sur le site internet. 8 a 11 champignons mais des gros. aujord hui il est en train de produire encore 6 champignons. Je pense que dans les périodes chaudes il faut pas esseyer si on a pas les moyens de maintenir une bonne temperature ambiante. ;


    Déçu des premières récoltes
    J'ai commandé 3 box que j'ai démarrer en même temps et de la même manière, il y en a une qui a été contaminé mais le SAV m'a gentiment envoyé un autre kit en dédommagement. Pour ce qui est des récoltes je suis déçu car j'ai toujours eu de bons rendements, les conditions étaient respectées mais je n'ai que 100g frais sur un kit 90 sur un autre et le troisième ne sera pas beaucoup plus garnis... En revanche ils sont énormes, le plus gros approchait les 50g.


    Premier essai avec une box supragro. Rien n'est sorti malgré des conditions à priori bien respectées (d'autres box d'autre marque autour ont bien fonctionné). Par contre, le service client m'a offert un bon d'achat de 50€ en compensation. Cela ne couvre pas le prix de la box XL, mais console un peu.


    Bought this back in october 2018, I only let a review because I forgot to do so... I remember this kit was in sale so I paid 10 bucks less and was absolutely worth the investment! I set up the kit directly after I received it and as it was my first kit took great care of every single day with joy and excitement! The shrooms showed me a lot of gratitude as 13 days later I harvested 440g fresh! Had another small flush of 100 grams. Really good experience !


    Bof au début mais génial a la fin
    Boite achète mi juin du coup grosse chaleur la box n’a rien donner apar 5-6 petit champis. Fin de la période chaude avec beaucoup de pluie là box a vraiment commencé à ce développer et la magie presque 180g (18g sec) en un cycle!!! Je recommande fortement mais a ne pas tenter en période de forte chaleur si rien n’est fais pour que la pièce reste a bonne température.


    Nn compatte monte da questo sito
    Solo una spesa di solidi inutile su 3 kit nemmeno una e andato in produzione . Ho contattato il servizio clienti e nn si sono nemmeno segnato di rispondermi . Mai piĂą compreso da questo sito Mai piĂą. E solo uno spreco di soldi per


    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.

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