McKennaii Growkit
Intense visuals and deep, philosophical introspection, grown by you. A complete 1200 cc kit with fully colonised mycelium, ready to fruit. One of the more potent strains, and one to approach with respect.
- Complete 1200 cc kit, ready to grow
- 100% organic substrate, grown in NL
- No experience or extra tools needed
- Discreet, unbranded packaging
Not a beginner's mushroom.
McKennaii is one of the most potent and respected varieties of magic mushrooms in the world. Named after the legendary ethnobotanist Terence McKenna, this strain has built a reputation for its strength and its deep, philosophical character. It is not a beginner's mushroom, but a favourite among those who want to go further.
McKennaii is known for its intense visuals and profound, introspective journeys. Expect vivid imagery, a strong shift in perception and the kind of reflective, mind-expanding experience that experienced psychonauts seek out. Approach it with respect, start low, and choose your setting with care.
Very strong
Vivid imagery and a strong shift in perception. A journey of six to eight hours on average.
Complete kit
Grow tray, grow bag with air filter, two sealing clips and a step-by-step manual. Nothing else to buy.
Flushes
After the first harvest the kit keeps producing. The second flush is usually noticeably larger.
From box to first harvest
Four steps, no growing experience and no extra tools. The kit arrives fully colonised, so all it needs from you is the right spot and a little patience.
Set it up
Place the grow tray inside the supplied grow bag and close the bag with the two sealing clips.
Find the spot
A bright place out of direct sunlight, at roughly 20 to 25 °C. A heating mat helps if your room runs cooler.
Wait for pins
Within one to three weeks the first small mushrooms appear. Keep the bag closed and let them develop.
Harvest
Pick as soon as the caps start to open. Then let the kit rest for the next flush, usually a larger one.
Growth speed and yield depend on temperature, humidity and how carefully the kit is handled. The first flush is often a little smaller, the second is usually considerably larger.
Grow your own
A complete McKennaii kit, ready to fruit, discreetly shipped from the Netherlands.
Dosing guide
Magic mushrooms are dosed by dried weight. The fresh equivalent is shown below each amount, as fresh is about ten times heavier than dried. Start low, you can always build up.
No trip. Subtle, for focus and mood.
A gentle introduction to mushrooms.
A clear, visual psychedelic experience.
An intense, deep journey for the experienced.
Dried weights are the most precise. Fresh equivalents are approximate, as fresh weight varies with water content. Effects also vary per person, strain and setting. Choose a calm setting, arrange a sober trip sitter, and avoid alcohol and other substances. This is not medical advice.
Good to know
Effects
Users often describe it as a vivid and deeply reflective shift in awareness:
- Visual: pronounced imagery and strong shifts in colour and pattern
- Emotional: deep and reflective, at times intense
- Mental: profound introspection and a philosophical shift in perspective
- Setting: for experienced users, in a calm and familiar environment, ideally with a sober trip sitter
- Duration: 6 to 8 hours on average
What is in the box
- 1200 cc grow tray with fully colonised mycelium
- Transparent grow bag with air filter
- Two sturdy sealing clips to close the bag properly
- Detailed manual with step-by-step instructions for starting, caring for and harvesting
How do you use the grow kit
- Place the grow tray inside the supplied grow bag.
- Close the bag with the included sealing clips.
- Put the kit in a bright but not sunny spot, at a temperature of about 20 to 25 °C.
No growing experience or extra tools needed, this kit is fully ready to grow. Within one to three weeks you will see the first mushrooms appear. Harvest them as soon as the caps start to open. The first flush is often a little smaller, the second is usually considerably larger and stronger.
Quality & safety
Our grow kits are organically grown in the Netherlands, without chemicals or artificial additives. They grow naturally and are processed under strictly controlled conditions. Every batch is professionally packed to certified food-safety standards, so you are assured of a clean, safe and reliable product.
Storage
- Unopened: store refrigerated at 2 to 4 °C, keeps for three to six months
- After opening: start right away
- Harvested: fresh keeps for a few days in the fridge, dried and airtight almost indefinitely
Legal & shippable
In the Netherlands, mushroom grow kits are legal to buy and own. The kits contain fully colonised mycelium of the Psilocybe cubensis mushroom. Because no mushrooms (fruiting bodies) are present yet, they do not fall under the prohibited substances in the Opium Act.
Growing and using mushrooms is permitted in the Netherlands for personal use. Grow kits often fall under the Mutual Recognition of Goods Regulation, which means they may be sold throughout the EU if they are legal in one member state.
Shipping & delivery times
We ship to 23 EU countries in discreet, unbranded packaging. Netherlands 1 to 2 business days, neighbouring countries (Belgium, Germany, France, Luxembourg) 2 to 4, most other EU countries 5 to 7, and Greece, Cyprus and Malta up to 8. We do not ship to the United Kingdom or Switzerland. Estimates may run longer during busy periods.
Do we ship to your country?
We ship to 23 EU countries in discreet, unbranded packaging with Track & Trace. Select your country to check delivery. We do not ship to Norway, Denmark, Finland or Hungary, or outside the EU.
Pick your set
Two ready-made combinations. Everything goes into your cart in one click.
Kit & heat mat
One kit plus stable temperature, the single biggest factor in a good first flush.- McKennaii Growkit Strength 4.5/5 · 1200 cc€ 39,99
Heat mat Holds 21 to 24 °C€ 19,99
Two strong strains & heat mat
McKennaii next to Marshmallow, the strongest kit in the range, for growers who want the full spread.- McKennaii Growkit Strength 4.5/5 · 1200 cc€ 39,99
Marshmallow Shrooms Growkit Strength 5/5 · 1200 cc€ 49,99- Heat mat Holds 21 to 24 °C€ 19,99
Important safety information
- • Do not use with mental health conditions, medication, pregnancy or while breastfeeding.
- • Avoid alcohol and other substances during use.
- • Use only in a safe, calm and familiar setting, ideally with a sober trip sitter.
- • Start with a low amount, especially the first time. You can always take more, never less.
- • Do not use when driving or operating machinery.
- • For adults 18+ only. Keep out of reach of children.
Mushroom grow kits are legal to buy and own in the Netherlands and are sold in accordance with applicable EU regulations. This product and page are for informational purposes and are not medical advice.
What our customers say
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One of the most potent kits we offer, fully colonised and ready to fruit, with discreet EU delivery. Your first mushrooms within one to three weeks.
Free discreet EU shipping over €50 · Order before 17:00, shipped today