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2 XL MUSHROOM BOXES - growkits


These new and improved XL mushroom kits contain 80% more substrate than the medium mushroom kits, which means even more than double the magic mushroom yield.


We offer the following XL mushroom kits in this 2-pack deal:

  • B+ Mycelium Box
  • Columbian Mycelium Box
  • Cambodian Mycelium Box
  • McKenaii Mycelium Box
  • Mazatapec Mycelium Box
  • Mexican Mycelium Box
  • Pes Amazonian Mycelium Box
  • Thai Mycelium Box
  • Treasure Coast Mycelium Box
  • Golden Teacher Mycelium Box
  • PF Original Mycelium Box
  • Nepal Chitwan Mycelium Box
  • Hawaiian Mycelium Box
  • Costa Rica Mycelium Box
  • Puerto Rican Mycelium Box


Our online manual for the mushroom mycelium kit can be viewed at www.mushroomgrowbox.org.


These XL mushroom kits can grow up to 1 kilogram of fresh magic mushrooms, given the right conditions:
* Temperature: steady temperature of 22-26 degrees celsius (day AND night)
* Light: 12 to 14 hours of light per day, NO direct sunlight. Do not expose it to 24 hours of light per day.
* Humidity: Spray the insides of the filter bag 3 times a week, or put a layer of water on the bottom of the filter bag.


Because the kits are fresh we recommend to set them up right away.


Mushroom Stopper - Bad Trip Stopper
If this will be the first time you use magic mushrooms, make sure that a sober friend is around to help you out in case you feel uncomfortable, sick or scared. Click here to buy our Mushroom Stopper. Our Mushroom Stopper, it helps you to get out of your trip.



We do NOT ship to countries outside the E.U.

If in doubt, please contact us and we will inform you if we will ship these XL mushroom boxes to you!!!

Mushroom growbox manual


Step 1
Wash your hands thoroughly and clean the outside of the grow kit with a clean, damp cloth. Remove the lid, but keep it for step 3.

Step 2
Fill the kit with water up to the edge of the kit (20 º C). Place the lid and let the mushroom growkit soak for 8 hours.

Step 3
After soaking, remove the lid of the grow kit and carefully pour off the water, until the last drop.

Step 4
Add warm water (20 º C) to the grow bag.

  • For the 2100cc grow kit: 2 cups (0,5 liters)
  • For the 1200cc grow kit: 2 cups (0.5 liters)
  • For the 250cc grow kit: 1 cup (0.25 liters)

Put the grow kit in the grow bag. Make sure the water does not go over the edge of the grow kit.

Step 5
Close the growing bag by folding the top of the bag and secure it with one or two paperclips (part of the grow kit package).

Step 6
Put the grow kit in a place out of direct sunlight but enough daylight, and not on or near a heater or heat source. The ideal temperature is between 20 and 25 º C. Make sure there is sufficient sunlight.

Step 7
The first mushrooms will be visible in 10 to 12 days.

Step 8
The mushrooms should be harvested just before the skin underneath the hats starts to loosen up.
The harvest: grab the stem gently and turn the mushroom to the left and than to the right and gently pull. This way you can remove the mushroom as complete as possible. This way you can reuse the grow kit.


Enjoy your shrooms!

new flight
After harvesting, clean the surface of the grow and remove the old and dead mushrooms, so the new mushrooms have the ability to grow. Put the grow kit for the best results in the refrigerator overnight. Caution! Not colder than 2 ° C.

Start again from step 5 for the next harvest.



  • The ideal climate is 22 º C.
  • Work very clean!
  • When using a heating mat, make sure there is between the heating mat and the growkit. (1 cm) 
  • Don't use a heating mat for temperatures above the 20 degrees. 
  • Try to avoid mushroom spores on the substrate, it will kill the mycelium.

Der Golden teacher ist bei 1-2 Gramm sehr stimmungs aufhellend und auch einige Effekte zu spüren kein zeit Gefühl mehr. Ab 2-5 Gramm trocken kommen dann auch schöne visuelle effekte hin zu...
Evaluation: [out of 5 Stars]

(Marcel )
Hallo, habe einmal Golden teacher XL und MC Kennai XL bestellt Lieferung ging sehr schnell ca 3 Tage. Leider war eine Box verschimmelt da passierte garnichts ausser das sie schwarz wurde nach der Zeit. Schicken mir aber jetzt eine neue was ich sehr inordnung finde.
Evaluation: [out of 5 Stars]

Hallo, habe einmal Golden teacher XL und MC Kennai XL bestellt Lieferung ging sehr schnell ca 3 Tage. Leider war eine Box verschimmelt da passierte garnichts ausser das sie schwarz wurde nach der Zeit. Schicken mir aber jetzt eine neue was ich sehr inordnung finde.
Evaluation: [out of 5 Stars]

(Victor )
Après avoir eu quelques problèmes de contamination sur ma première commande, avalon m'a gentiment renvoyé 2 boîtes gratuitement (MERCI À VOUS 🙃) box avec de gros rendement, et c'est drôle mais 2 jours après le 2nd drunk les chamii poussent déjà, je recommande à 200%! C'est de la qualité, sur 2 flush et 2 box j'ai eu plus de 100g sec !
Evaluation: [out of 5 Stars]

(Felix Watzlawik)
Awesome, everything worked! Had 7 Flushs!!
Evaluation: [out of 5 Stars]

Got it really fast. Very happy now :)
Evaluation: [out of 5 Stars]

(J c)
Amazonian fast , b+ slow, yield ok
Evaluation: [out of 5 Stars]

(J c)
2 boxes, both moldy, this is the second time this has happened

Evaluation: [out of 5 Stars]

(J c)
2 boxes, both moldy, this is the second time this has happened

Evaluation: [out of 5 Stars]

Very good cake. Leave it closed for some time to get 100% mycelium box
Evaluation: [out of 5 Stars]

(jeremiah fallows)
very well producing kits. had an amazing experience cultivating even through my troubles getting them started
Evaluation: [out of 5 Stars]

wtf? nothing goes right... the shipment was late, the condition of cultivating was regular but one of the 2 boxes stopped the grow of his extra little mushrooms after two weeks and the other after 3 weeks from the first mushroom gave me only 5g dried!
Evaluation: [out of 5 Stars]


the delivery is really fast, but i got disappointed: every box i ordered was already used, THEY TOOK THE FIRST FLUSH!!!! Why i am so convinced about that? Well.. Its not my first time i am doing this and over the time experience is growing and the result is a good eye for the mycelium and the cake and this one is for 100% already used ones, topped with vermiculite in hope that newbies don't detect it..??

I fact; the first flush is one of the most potent.. but this is just one of the points, in the other hand the RISK of contamination is rising up because of your actions..!! This is BULLSHIT.

..Guys, really? Is that your job? Where is the quality, the passion, the trust in your work? Or got your minds infected by profit??
This is not a good way to make business, but anyway -karma is watching you.

all the best.

Evaluation: [out of 5 Stars]

Awesome product. Arrived in time!
Evaluation: [out of 5 Stars]

(Csaba Vas)
This is an update for the 1 star review on the 11th of February. The growkits provided me about 50 grams of dried shrooms!!
Evaluation: [out of 5 Stars]

(Csaba Vas)
Ordered 2 large Golden Teacher growkits. Started growing them exactly 3 weeks ago. Literally nothing happened, apart from the white mycelium somewhat growing in the cake, but that`s it. Not a single mushroom is growing in 3 weeks. And now one of the boxes is turning green. I think I just threw money out of the window with this. I`m trying another company I guess. :(
Evaluation: [out of 5 Stars]

Best boxes and very best price !!!!
Evaluation: [out of 5 Stars]

Thai are really fucking strange xD
Fast and very nice product !!!
Wish could have a+ and b+ in one box xD

Evaluation: [out of 5 Stars]

Très satisfaite de la qualité, de la rapidité d'envoi ainsi que du service clientèle. Les kits sont toujours bien colonisés.
Evaluation: [out of 5 Stars]

(Peter Miller)
Happy with my grow kit one hasn't produced any mushrooms as of yet but the other had been doing well
Evaluation: [out of 5 Stars]

(Jonas Hahn)
Perfekt service! Very fast shipping! Best qauality, which you can get!
Was certainly not the last order!!! Thanks...

Evaluation: [out of 5 Stars]

(Alex Schnieders)
Great!Thanks a lot!Quick arrival here, looking forward for harvesting! Soon again.....
Evaluation: [out of 5 Stars]