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Mazatapec XL Mycelium box (2100 ML)


This Mazatapec XL-MyceliumBox is an enhanced Myceliumbox with 80% more substrate. Mazatapec mushrooms are amongst the favorites of our customers. Good yield and great results. The mazatapec mushroom will not let you down and that's a promise from Avalon.

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

Our online manual for the XL mycelium box can be viewed at www.mushroomgrowbox.org.
There are no paperclips included in the box.

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

Made for the amateur mycologist, the Mazatapec XL-Mycelium kit 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 thai mushroom 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.
Mazatapec XL Mycelium box (2100 ML)

Habe insgesamt mit dem Mazatapec XL Grow Kit 32,14 gr. (*sehr*) trocken herausbekommen.
Nach der Ernte wurden die Pilze 1-3 Tage an der Luft getrocknet mit Ventilator.
Danach 3-5 Tage in einem Luftdichten behälter mit einem Trocknungsmittel (Magnesiumsulfat) bis diese brechen oder bis man sie fast brechen konnte.
Von der vollständigen Kolonisation bis zu den ersten Primordien hat es knapp über 2 Wochen gedauert und nochmals so lange bis zum ersten Flush. Der Mazatapec ist eher langsam wachsend und wird auch nicht besonders groß jedoch Empfand ich ihn als sehr potent. Da ich bereits über 10 Jahre die Pilz Medizin schon nicht mehr genossen habe wollte ich mit 250 mg Primordien der ersten Ernte eine Mikrodosierung durchführen. Bin hier bereits in die Erfahrung gekommen. Diese war sehr klar ohne jegliche Begleiterscheinungen, vergleichsweise war dies fast schon wie eine viertel Pappe der Jubiläums Hoffmänner. Ein anderes Mal habe ich 850 mg eines ausgewachsen Exemplares zu mir genommen, diese Erfahrung war sehr heilsam und reinigend ähnlich wie eine Ayahuasca (jedoch deutlich kürzer). Vom Anfang bis zum Ende her dauerte es insgesamt ca. 6 Stunden.
Ein Teil der Pilze werde ich verschenken und aus dem anderen Teil mach ich Honig.

Danke an den Pilz für die heilsame Erfahrung und danke an Avalon für das Grow Kit und die damit verbundenen schönen Stunden.

Evaluation: [out of 5 Stars]

(Harsha Vemuri)
Great product and great service
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]

Delivery within 1 week of purchase. Has now been 2 and a half weeks and nothing has sprouted as of yet the mycelium is forming though so still hopeful
Evaluation: [out of 5 Stars]