Fresh Magic Mushrooms Grow Kit - Mckennaii XP

The McKennaii magic mushroom grow as strange as it's workings are. The mushroom caps go big to small, thick and thin stems, light yellow to dark brown in color. The Mckennaii's trip can go deep, colorful, speedy and sexual. This 100% mycelium FreshMushroom grow kit grows fast and is completely maintenance-free. The XP stands for Extra Potency!

  • Fast growing: 1 week to first pins
  • High yields: Up to 4 flushes. (with excellent conditions)
  • High Potency: According the supplier the XP (Extra Potent) strains are twice as potent!

Beschikbaarheid: Op voorraad

€ 42,00

Growing with the McKennaii XP Fresh Mushrooms Grow Kits is extremely easy. These kits are completely maintenance-free thanks to a fully colonized substrate without fillers. You hardly have to do anything to get your first flush with high levels of psilocin. Follow the instructions below and you will be assured a high harvest of mushrooms!

  • Fast growing: 1 week to first pins
  • High yields: Up to 4 flushes. (with excellent conditions)
  • High Potency: According the supplier the XP (Extra Potent) strains are twice as potent!

Contents of McKennaii XP Mushroom Grow Kit

  • 1x McKennaii Mushrooms Grow box – This contains rye substrate with active mycelium
  • 1x Growbag – The bag has filters across the bag.
  • 2x paperclip – For closing the grow bag.

You need

  • Misting Bottle  – Misting is needed for the humidity level
  • Potable water – For misting and soaking
  • Clean environment – Work clean to give other fungi and bacteria (micro organisms) no chance to contaminate.


We recommend using


How to prepare the room and yourself before you begin

  • Close any open windows. Wind or draft may bring micro organisms that can contaminate the Magic Mushroom grow kit.
  • When taking out the grow box with the cake from the carton box, put it on a disinfected surface. If this surface would not be clean, micro organisms may attach to the grow box and will flourish inside the Magic Mushroom grow kit, and will contaminate the grow box.
  • Make sure you work with clean hands and arms. We recommend using surgical gloves or a good disinfectant when handling the kit. You should use a facemask to avoid breathing into the grow bag and on the cake.

Instructions: Starting the Magic Mushroom grow kit

1. Take the magic mushroom grow kit, plastic bag and paperclip out of the box. Remove the lid of the mushroom grow kit (store the lid properly). Rinse the lid under running water. You will need it again later (step 7).

2.Place the mushroom grow kit without lid in the plastic grow bag (opening at the top). Slide the opening of the bag under the bottom with the micro perforation pointing upwards. The opening of the bag is now largely closed. You do not have to worry about air circulation.

3. When you see the first small mushrooms ( called pins), you can put the grow bag upright. Do not water! The first magic mushrooms will be visible after about 1 week.

4. Place the mushroom grow kit in an area with enough daylight and at a temperature between 18 °C and 28 °C. NEVER place the grow kit in direct sunlight. Although mushrooms will grow at almost any temperature above 15 °C, 23 °C is the ideal temperature for an optimal harvest. Special heat mats are available to ensure this temperature and not have to heat the entire room.

5. When the mushrooms are slightly bigger as the pins keep the bag a bit open the entire time so the moisture can evaporate (Phase 2). Too much moisture is not good.

The first mushrooms will be visible after approximately 1 week. Your first harvest will be about a week later. Make sure that you harvest before the first spores begin to fall! Freshmushrooms grow kits produce their first harvest fairly quickly. The first buds are already visible after only 1 week. Low and high temperatures may slightly delay this growth process. As soon as the buds are visible, stop spraying the inside of the bag. It usually takes one to two weeks before the mushrooms are fully developed.

6.These kits can produce several mushroom harvests. To do so, fill the kit with clean tap water after the first harvest. This process is known as cold shock. It breathes new life into the mycelium and ensures that enough moisture is present for the mushrooms to grow.

7. Place the lid of the grow Kit back on the kit. Let the kit rest for 12 hours. Open a corner of the lid and drain the excess water. From here you can follow the instructions from step 1 again. This process can be repeated several times.

Growing with heatingmat (use only for this kit)

Place the plastic bag with the Grow Kit in it on the heat mat. Switch the heat mat on. After two days switch the heat mat off and wait until the buds have developed, which usually takes between five and ten days. Then switch the heat mat on again and open the top of the bag a little so the moisture can evaporate.

What to do if the buds haven’t developed after ten days. Take the cake out of the plastic box, put it back in the plastic box on its side and start again with two days with the heat mat.

How to store the grow kit correctly

It is recommended to start the cultivation process right away. If you decide to start growing later, you may store themagic mushroom grow kit inside a Soaking Bag in the refrigerator (2°C to 8°C) for 4 weeks after the production date.


The ideal temperature is 24°C. Do not have the temperature drop under 18°C and not exceed 29°C. To keep the temperature from dropping under the 18°C, you can use a thermo mat to maintain the ideal temperature. A thermo mat is a must-have in the winter or colder regions of the world.


The magic mushroom grow kit only needs light for the mycelium to ‘understand’ it has reached the surface. Only then, mushrooms will grow. A few hours of fluorescent/artificial light or indirect sunlight a day is more than enough. Direct sunlight kills the mycelium, so avoid the sun to shine directly on the grow kit.


If the conditions are optimal, you can expect the first small mushrooms (the pins) to appear between 7 and 10 days. This also depends on the strain. Some cubensis strains grow slower than others.


The mushrooms come up in groups. This can be a small or large group. That depends on the strain. A growth like this is called a flush. Mushrooms are almost never ripe at the same time. You can get more than one flush out of a kit. The first two flushes are the largest. When more flushes come, they will be smaller than the previous one.


Mushrooms are ripe and should be picked when the veil between the hat and the stem has just torn. Don’t wait much longer. Use surgical gloves or disinfect your hands, wrists and arms. Pick the mushrooms that are ripe and let the others continue to grow. The cake has no top layer such as vermiculite. This makes is much easier to pick the mushrooms than with the standard grow kits. The mushrooms can easily be pulled out of the cake by holding them between thumb and index finger. They mushrooms let go almost immediately. When most of the larger mushrooms have been picked, also pick the smaller ones and the pins as well.

Mushrooms that grow from the sides

Mushrooms grow where the light reaches and where there is little penetrating resistance. Because the cake has light shining on the sides, the mushrooms might also grow there. It is hard to counter this and can be allowed. Some growers wrap the sides of the grow box in aluminum foil to keep the sides dark, but this doesn’t always work well.

When mushrooms grow there, they can be picked just before you soak the kit:

Clean hands! Take the grow box out of the bag and place it upside down on your other hand. Wiggle the plastic box so that the cake will fall out, onto your hand. The plastic box can be placed on a disinfectant surface. Now you have this hand free to pick the mushrooms from the sides of the cake. When all mushrooms are picked, you can place the cake back as it was, in the plastic box and continue to the soaking process.

The end

When no more mushrooms grow out of a grow kit after the second flush for at least three weeks, or when the Magic Mushroom grow kit turns green, red, grey or yellow; the grow kit can be disposed of.  The change in color is a sign that the grow kit is contaminated with another fungus or a bacteria. No more mushrooms will grow out of the Psilocybe cubensis Magic mushroom grow kit and the grow kit should be thrown away in the garbage outside.


When you are too late picking the mushrooms, they will drop their spores. The cake and the mushrooms will turn black/purple (some other cubensis strains red/brown) because of the spores. This is not really a problem; it just doesn’t look very pretty. When mushrooms release their spores, they also start to degrade and the active ingredients are breaking down. Mushrooms will lose some of their potency.

Be sensible

Check out the responsible use page for more information on do’s and don’ts.

This kit is meant for small-scale home use only.

Extra informatie
Extra informatie
Artikelnummer MCS.GKMYC.003-MCKE-1200
Gewicht (KG) 1.1000
Type kweekset FreshMushrooms
Moeilijkheidsgraad Makkelijk
Grow kit Size Normal
Soort Psilocybe cubensis
Herkomst Nederland
Sterkte Bovengemiddeld
Optimale kweek temperatuur 24ºC
Opbrengst (van) 100 grams
Opbrengst (tot) 300 grams
Water nevelaar nodig Yes
Geen verzending naar: Niet-EU-landen, Afrika, Azië, Australië, Caribisch gebied, Centraal-Amerika, Cyprus, Denemarken, Duitsland, Iran, Ireland, Midden-Oosten, Zuid-Amerika, Canada, Estland, Finland, Israel , Nieuw Zeeland, Noorwegen, Rusland, Zweden, Zwitserland, Turkije, United Kingdom, Verenigde Staten


Artikelen 1 tot 20 van 25 in totaal

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Good service Review by izi
As always good and fast delivery

Mckennaii was more philosophical so if you are new try mexicana instead (Geplaatst op 19-09-2019)
this shroom den megalonane Review by Vasilis
i hav problem with tis kit. (Geplaatst op 26-12-2018)
Great Service Review by Chela
I didn't get much of a flush from this kit though it was my very first and I'll do a lot differently next time. What really impressed me was the amazing service received from Magic Mushrooms Shop. Fast at replying to my query and fast shipping. Perfect customer service.
As for the effects, I'm yet to try so can't comment on this aspect. (Geplaatst op 22-12-2018)
Lot of muchrooms on 1 month Review by Rodrigo
Lot of muchrooms on 1 month (Geplaatst op 12-12-2018)
allthou Review by david
alltou, the first time i grew mcknnaii couple years back, it was only sucsess!! the grow was easy, and suprisingly many flushes.
& the feed back from people, awsome. especially from people who had try mushrooms before, they sad it was really god! (Geplaatst op 23-11-2018)
50/50 Review by david
delivery and everything was great.
i dont know, probably i did some things wrong..
it tok many weeks ca3 , 4weeks until small heads showed up, and now the surfice is or was a bit moldy.. i tried to follow the instruction.. now im reading the instructions one more time, and i think i open up the top of the bag, little bit. because acording to the instructions, air circulation is nothing to worry about. so i think i ty that(: (Geplaatst op 23-11-2018)
Strong but not in numbers Review by J.J.
This time average first harvest, second a few and third only one. Many grow on the side and buttom so I dropped the container, let them grow on all sides. Maybe best just to force them to grow only on top side. (Geplaatst op 21-11-2018)
Great Review by MIslas
They give a decent yield and a real powerful trip. The tub and substrate do have a bit of a gap between them so lots of the shrooms will grow on the sides. (Geplaatst op 24-10-2018)
Very good product Review by Adam
One of my favourite. Thanks a lot. (Geplaatst op 06-09-2018)
Satisfying Review by Jiri
The yield was not as big as I would wish for, but the kit itself is really quite resistant to infection and therefore fool-proof.
You can really notice the blue psilocybin all over the shrooms. Plus I noticed that the dry ratio was higher than other kits.
Trips were pleasingly visual starting at low dosage... (Geplaatst op 21-08-2018)
Very good product Review by Iffy
5* (Geplaatst op 06-07-2018)
Very good product Review by Iffy
The kit came quickly as always however there was a blue spot which worried me at first thinking the worst but knowing the guys here would help me. Rest assured i was told it was a bruised spot and continued on and the results were great. Lovely flush. Would and am buying again. (Geplaatst op 06-07-2018)
Great potency, strong effects Review by Attila
It was my first kit, and it was really easy to grow them. I got 20g out of two flushes and the third one is coming soon. I expect a total of 35-40 g out of this kit. The effects are awesome, and really strong. Would recommend. (Geplaatst op 08-06-2018)
This shrooms are perfect Review by Gvantsa
Everything was perfect ! Delievery was perfect (Geplaatst op 01-06-2018)
Really Small Harvest-first flush ok, second 2 fruits, 3... none. Old kits were better! Review by Donatas
This is my fourth growkit, and the most disappointing in terms of harvest. The first flush was smallish/normal, the second only three fruits and then the third didn't come at all. The old style of kit I got 4/5/6 flushes easy, smaller each time but still, even the third flush was bigger than the first with this new style.

20ish g dry... it's really not great-the old kits were far better. The shrooms themselves are ok-pretty much the same as the Amazons and B+ in terms of trip, maybe less potent as taking a 5g amount it was still quite mild experience, no ego death. Again, with such a small harvest maybe the potency was also not as good as it should be.

Anyway, I use a heat mat and follow the instructions as before when I had good results so I don't think it's user error but you never know... (Geplaatst op 28-05-2018)
Kit worked perfectly Review by C
Great kit first shrooms ready to pick within 3 weeks. Only issue Was a gap between tub and substrate which caused shrooms to grow out the side and underneath of tub.

Overall harvest roughly 40g dried after 2 harvests.

Best visuals I’ve experienced on these badbois (Geplaatst op 13-05-2018)
Amazing people. Review by Iain
I'm over 40 and have enjoyed the shroom community for nearly 30 of them, to that end my review is more about the service i've received. These guys are awesome so helpful and very very quick discreet delivery of a top quality product. I've progressed from the kits which are so easy to use to now self germinating/inoculation. Using all products again from magic-mushroom-shop. Thanks again and again and again. Peace. (Geplaatst op 10-05-2018)
Top! Review by Daniella
Snelle levering! Fijne shroom, dacht in het begin dit wordt niks maar wat een mooie vruchten!! Aanrader! Prachtig mooi om te zien groeien en te ervaren (Geplaatst op 07-05-2018)
A very dense flush for a very dense experience Review by Damian
These mushrooms are among the best I've ever tried. The cake is also better as you can't ruin it when harvest your shrooms, you can then easily go on with a couple of more flushes.
They release black spores when ready to harvest and the blue lines over their body seems to say: we will provide you a deeply intense experience.
They seemed to be right, to me. (Geplaatst op 01-05-2018)
Amazing Mushrooms, Second flushes a bit meager Review by Kagiso
These mushrooms are absolutely amazing. All it takes is 2-3 fresh ones for a lovely trip, taking more can really result in some profound experiences. Plus, they're delicious. It may have been due to my inexperience but I didn't get any more than 7 mushrooms from the later flushes, but I'm definitely buying another of these kits to try again, even just one flush is more than worth the price. The Raccoon approves (Geplaatst op 19-04-2018)

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