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Cambodia XL Mycelium box (2100 ML)


This Cambodia XL-MyceliumBox is an enhanced Myceliumbox with 80% more substrate than our medium sized cambodia mushroom kit. Cambodia is known to produce big mushrooms and the yield is very good. The trip as well :)

This XL-MyceliumBox contains the mycelium of the Psilocybe cubensis 'Cambodia' strain. The Cambodia mycelium is colonized on a substrate of rye and perlite. The top layer is covered with vermiculite.

Our online manual for the cambodia mushroom mycelium kit can be viewed at www.mushroomgrowbox.org.
There are no paperclips included in the boxes.

Holding the double of the substrate, meaning the double of the expected Cambodia yield, the XL-MyceliumBox is an enhanced product allowing the formation of exceptionally big Cambodia mushrooms in an exceptional short amount of time.

Made for the amateur mycologist, the Cambodia XL-MyceliumBox highly reduces the probability of contamination and it's simplicity of processes will allow you to better focus on the amazing formation of mushrooms bodies. Made with the strongest redefined strains, growing mushrooms was never easier and more reliable.

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 12 hours ( if this is your second flush you let the kit 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 2 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.
Cambodia XL Mycelium box (2100 ML)

Geduld ist angesagt und bisher kaum ertrag, was nicht ist kann ja noch werden
Evaluation: [out of 5 Stars]

These are VERY hard to grow. I only yielded about 5-10 grams from each of the 4 of these kits i got. I recommend getting the 100% mycellium kits over this one. Unless you're an experienced grower then these are great. Dont use the heating mats for these, they overheat them and prevent growth
Evaluation: [out of 5 Stars]

First flush was ready after 33 days.
Really big, nice looking fruits.
Harvested about 50g dry!
Still flushing!

Im very excited for the second flush.

I think the other user just contaminated the cake (which is a common mistake)

Evaluation: [out of 5 Stars]

that´s was a wimp box.
just as I thought it starts, black mould appears on the side ( near the bottom, so there where I never had a chance to contaminate it myself. it looked as it started inside and came to the surface. consolation: my mini Box, Golden Teacher from my first order was at it second flush at this time )
I guess something went wrong with the substrate. a shame to give such a bad review, but it was f---up.

Evaluation: [out of 5 Stars]