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McKennaii Magic Mushroom Grow Kit — FreshMushrooms®
The McKennaii is a potent Psilocybe cubensis strain with a mysterious Dutch origin — named in tribute to ethnobotanist Terence McKenna. Known for its strong, visual character and dark-capped appearance.
This FreshMushrooms® grow kit (1200 ml) arrives fully colonised and ready to fruit. Place the kit in the bag, fold it as instructed, and expect your first harvest in about two weeks.
Availability: Less than 10 in stock
€37.50
Product Description
Details
McKennaii — a tribute to the godfather of modern mycology
The McKennaii strain first surfaced in the early 2000s in Dutch smartshops, shortly after the death of Terence McKenna in April 2000. McKenna was an ethnobotanist and philosopher who co-authored one of the first mainstream cultivation guides — Psilocybin: Magic Mushroom Grower's Guide (1976) — and spent decades advocating for the study of psychoactive fungi. The strain was named in his honour.
Who actually developed the McKennaii remains unclear. One version of the story says it was bred from a spore print found among McKenna's personal collection after his passing. The more widely accepted account is that a cultivator in the Netherlands developed the strain and named it as a tribute. Either way, the McKennaii quickly became one of the most sought-after cubensis varieties in Europe — and it still is.
Appearance
McKennaii mushrooms are immediately recognisable by their dark colouring. The caps range from deep golden brown to near-chestnut, often with an irregular, slightly wavy shape that gives them a distinctive character. The stems are thick, off-white, and bruise noticeably blue when touched — a visual marker of their psilocybin content. Fruit bodies are medium to large and tend to grow in dense clusters. Compared to lighter-capped strains like Golden Teacher or B+, the McKennaii has a darker, more rugged appearance.
Growth characteristics
McKennaii colonises quickly and fruits with enthusiasm. It is sometimes described as an intermediate strain, but with a pre-colonised grow kit, the difficulty level drops significantly — the mycelium is already fully established and ready to produce. In a kit setting, McKennaii performs reliably and produces dense, heavy flushes. It is a good step up for growers who have already tried Golden Teacher or B+ and want something with more character.
What to expect from this kit
This FreshMushrooms® kit is fully colonised and ready to start straight out of the box — no soaking, no watering, no preparation. Place the kit in the grow bag, fold the bag as described in the instructions, and maintain a steady 23 °C. The first pins typically appear within 7 to 10 days, with a full first harvest following at around two weeks.
Most kits produce two flushes. The first delivers the largest yield, with a second flush following after a cold-water soak. Total yield ranges from roughly 150 to 300 g of fresh mushrooms, depending on conditions and care.
Growing tips
McKennaii performs best with consistent warmth — keep the temperature as close to 23 °C as possible. A heat mat with thermostat is recommended during cooler months. Avoid direct sunlight; indirect daylight or a simple desk lamp on a 12/12 cycle is enough. For detailed care instructions, see the FreshMushrooms® grow kit instructions.
What's in the box
- 1× 1200 ml grow box with fully colonised substrate
Additional Info
Additional Info
| Productcode | MCS.GKMYC.003-MCKE-1200 |
|---|---|
| Weight (KG) | 1.1000 |
| Mushroom Strain | McKennaii |
| Brand | FreshMushrooms® |
| Difficulty | Easy |
| Size | Normal |
| Species | Psilocybe cubensis |
| Origin | Netherlands |
| Potency | Average / High |
| Optimum cultivation temperature | 24ºC |
| Yield (from) | 100 grams |
| Yield (to) | 300 gram |
| Water Spray Needed | Yes |
Customer Reviews
- Lot of muchrooms on 1 month Review by Rodrigo
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Lot of muchrooms on 1 month (Posted on 12/12/2018)Rating - allthou Review by david
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alltou, the first time i grew mcknnaii couple years back, it was only sucsess!! the grow was easy, and suprisingly many flushes.Rating
& the feed back from people, awsome. especially from people who had try mushrooms before, they sad it was really god! (Posted on 11/23/2018) - 50/50 Review by david
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delivery and everything was great.Rating
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(: (Posted on 11/23/2018) - Strong but not in numbers Review by J.J.
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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. (Posted on 11/21/2018)Rating - Great Review by MIslas
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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. (Posted on 10/24/2018)Rating - Very good product Review by Adam
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One of my favourite. Thanks a lot. (Posted on 9/6/2018)Rating - Satisfying Review by Jiri
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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.Rating
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... (Posted on 8/21/2018) - Very good product Review by Iffy
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5* (Posted on 7/6/2018)Rating - Very good product Review by Iffy
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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. (Posted on 7/6/2018)Rating - Great potency, strong effects Review by Attila
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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. (Posted on 6/8/2018)Rating - This shrooms are perfect Review by Gvantsa
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Everything was perfect ! Delievery was perfect (Posted on 6/1/2018)Rating - Really Small Harvest-first flush ok, second 2 fruits, 3... none. Old kits were better! Review by Donatas
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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.Rating
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... (Posted on 5/28/2018) - Kit worked perfectly Review by C
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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.Rating
Overall harvest roughly 40g dried after 2 harvests.
Best visuals I’ve experienced on these badbois (Posted on 5/13/2018) - Amazing people. Review by Iain
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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. (Posted on 5/10/2018)Rating - Top! Review by Daniella
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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 (Posted on 5/7/2018)Rating - A very dense flush for a very dense experience Review by Damian
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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.Rating
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. (Posted on 5/1/2018) - Amazing Mushrooms, Second flushes a bit meager Review by Kagiso
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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 (Posted on 4/19/2018)Rating - Very dense and easy to handle Review by Jørgen
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The kit seems well made. Compared to others I trided, it seem much easier to pluck the fruits without damaging the media. And the weight of the dry fruit is much higher than normal kits. (Posted on 4/4/2018)Rating - Far beyond expectations Review by Glen
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My grow kit is somehow still in the first flush, despite having produced circa 15g of cracker-dry material by now. It is my first attempt at growing and I've only recently had my second experience of eating this wonderful substance. It's immensely satisfying to watch the fruit grow and later to consume them knowing they're your own. (Posted on 3/29/2018)Rating - Très rapide Review by Laurent
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oui c'est un bon produit j'en suis a 4 récoltes (1 par semaine) ces champis poussent très vite par contre ils sont peut être un poil moins fort que les memes champis poussant dans des kits standart. Mais avec les mc kennaii on est rarement deçu... (Posted on 3/28/2018)Rating
Important information about McKennaii Grow Kit - FreshMushrooms®
- The purchase of this product is restricted to individuals who are at least 18 years old.
- By initiating a purchase, you confirm knowledge of and compliance with the legal terms regarding the product(s) in your country of residence, as well as your eligibility to acquire and hold them.
- Shipping restrictions apply to this product. Refer to Additional Info to discover our non-delivery zones.
- Engaging in the consumption of magic mushrooms is solely your responsibility, so be certain to thoroughly educate yourself about their usage and consequential effects.
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