How To Grow 100% Mycelium Supa Gro Kits

How To Grow 100% Mycelium Supa Gro Kits

Follow these instructions carefully and you will be rewarded with an amazing amount of mushrooms.

Supa Gro Grow Kits do NOT need soaking to produce the first flush - they are 100% ready to grow out of the box. All you need to have is some patience and a spray bottle to mist the kit once per day until the first pins appear.  The holes in the grow bag ensure better air circulation and a healthy grow!

Scope Of Delivery:

You Need:

  • Supa Gro 100% mycelium kit with 1200ml of 100% colonized substrate
  • Special plastic “Supa Bag” with ventilation holes for superb grow results
  • Paperclips

  • Clean tap water or mineral water
  • A bright place or fluorescent or luminescent light to put the kit (not in direct sunlight)
  • A temperature between 18°C and 28°C (23°C is optimal)
  • Relative humidity of between 85% to 95%
  • A little patience


  • Take the Supa Gro kit out of the cardboard box, but don’t throw the cardboard box away yet!

  • Please remember that you should NOT submerge the kit or do anything else with it - the Supa Gro kits are 100% ready to grow out of the box.

  • We highly recommend NOT to use any aluminum foil to grow your mushrooms.  This isn’t necessary at all and could even increase the chance of contamination.

  • Do NOT breathe into the bag and always wash your hands thoroughly before you work with your kits - mold is everywhere and you don’t want to lose your heavenly crop to a malicious and demonic intruder - green mold will ruin the whole kit.


Step 1

Take off the lid, clean it, and store it for later use.


Step 2

Put the Supa Gro box in the “Supa Bag”. Make sure the bag is standing straight up and that the opening of the bag is pointing upwards.


Step 3

Close the “Supa Bag” by folding it once or twice and secure it with the two supplied paper clips.


Step 4

Place the complete setup (grow kit and Supa Bag) back inside the cardboard box to prevent light from stimulating mushroom growth on the sides of the grow box.

5 New MushMush Magic Mushrooms Grow Kit Icons5

Step 5

Place the complete kit in daylight within a temperature range of 20°C - 28°C. Don’t place it in direct sunlight though! 23°C is the perfect temperature to grow your mushrooms. Indirect sunlight is the ideal lighting to grow mushrooms.

Note: A grow kit heating mat can support the growing process, but it won’t make up for a room temperature that’s too low.


Step 6

Mushrooms contain a high amount of water and to produce their fruits, the mushrooms need an ample amount of water. You can use a spray bottle to achieve the necessary humidity. The kit should be sprayed once every day from the moment you set it up until the moment the first pins appear. You should NEVER spray directly on the mycelium or on developing mushrooms.

It may take 1-3 weeks for the first pinheads to start to show up. Very low/high temperatures slow down the fruiting process and the first flush could take up to four weeks to develop. Once the first caps have shown up, it takes about a week for the mushrooms to fully develop.

Mushroom Heat MatView Mushroom Heat Mat


Working with mushroom kits requires cleanliness, so always wash your hands (and forearms, you never know) before plucking the crop - be meticulous, use soap, disinfectant gel and sterile gloves to prevent contamination. The best moment to pick the mushrooms is just a second before the veil tears - grab them at the very bottom and gently twist and pull to detach the fruit from the cake, do not pull it out as that would only cause harm to the mycelium and slow down the next flush. After picking, the stems of the mushrooms will turn bluish. This is called ‘bruising', and it is the first sign of oxidizing Psilocybin and evidence of the potency of the Flesh of the Gods.

Storing Your Growkit

We highly recommend to start the growing process instantly after receiving your kit. If you need to store a kit (not recommended), you can put it in the refrigerator - at 3-5°C. The box can be preserved for a maximum of 3 to 4 weeks.

Important: store the box in an air sealed plastic bag to prevent contamination.

Additional Harvests

These kits produce several flushes. After the first flush, the substrate is not exhausted, but needs fresh water to produce the next flush. In order to provide it, fill the cultivation box with water (very cold, from the tap - this is called “cold-shock” and stimulates the mycelium) and put the lid back on (we told you to keep it). Keep the brick submersed for 12 hours and then open one corner of the lid to pour out the excess water - after the pouring, give it another 10 seconds to really drain. And then you start over... put the box in the bag, spray daily etc until the next flush and then repeat the steps for flush 3 and 4 and so on.