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Magic Mushroom Grow Kit B+ XP by FreshMushrooms®

The B+ magic mushroom is a strong and easy-to-grow Psilocybe cubensis strain. B+ Magic mushrooms are a good choice for beginners and regular growers. The FreshMushrooms® B+ grow kit is very low in maintenance. The XP stands for Extra Potency!

Availability: In stock

Product Description

Growing with the B+ 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. (in ideal conditions)
  • High Potency: According the supplier the XP (Extra Potent) strains are twice as potent!

Contents of B+ XP Mushroom Grow Kit

  • 1x B+ 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 B+ 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.
  6. 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.

  7. 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.
  8. 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 a heatingmat (use only for this brand)

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.

Additional Info
Additional Info
Productcode fm-b
Weight (KG) 1.1000
Grow Kit type FreshMushrooms
Difficulty Easy
Size Normal
Species Psilocybe cubensis
Origin Unknown
Potency Average / High
Optimum cultivation temperature 24ºC
Yield (from) 100 grams
Yield (to) 300 gram
Water Spray Needed Yes
Not shipped to: Non EU countries, Africa, Asia, Australia, Caribbean, Central America, Cyprus, Denmark, Germany, Iran, Ireland, Middle East, South America, Canada, Estonia, Finland, Israel , New Zealand, Norway, Russia, Sweden, Switzerland, Turkey, United Kingdom, United States
Customer Reviews (44)
Die waren gut, die Wirkung könnte stärker sein, habe sie allerdings zu früh geerntet Review by Lbud (Posted on 1/16/2019)
Very easy and efficient
Very happy with this kit. Produced good growth, especially with the first flush. Great potency too. And setting it up was super easy and well described. Review by Twoni (Posted on 12/8/2018)
Well, that was surprisingly easy...
I got over 150 grams (picking weight) with my first attempt ever, without even paying much attention. Solid potency despite late picking. Review by Ben (Posted on 12/5/2018)
Really good!!
Me and my friends enjoyed these mushrooms very much, they arrived in only 4 days and grew within the next 2 weeks.didnt manage to get a second flush out of them bit that was my fault as i didnt use clean equipment.overall still great quality. Review by Carlton (Posted on 11/29/2018)
Great product. Great service. Keep coming back. X Review by Leechy (Posted on 11/20/2018)
I'm absolutely satisfied
I purchased 4 boxes of B+XP and 1 boxes of GT XP. In general, B+ has some good properties, includig easy to grow, large yield. So I can recommend to anyone, especially for the beginners. The srooms were started pinning about after 1 week , after then just bigger&bigger. I'm waiting for productivity of GT XP. I'm very curios.

Best regards
Review by Richard (Posted on 10/16/2018)
Not more than average
First had the SupaDrow which moulded right away. Then I received those ones as a substitute which was nice. But in comparison to the regular growing kit way less outcome, takes longer and also not as potent. I still definitely recommend the regular grow kit. Wouldn't buy this one though. Review by Majuzz (Posted on 9/20/2018)
Very fast grow. Good customer care. Love this strain.
Very fast grow. Good customer care. Love this strain. Review by Adam (Posted on 9/6/2018)
Sehr gut und einfach
Wir waren alle super zufrieden damit. Die Zucht ging sehr schnell und auch der Verzehr war ideal. Review by Thorben (Posted on 9/4/2018)
Sehr gut und einfach
Die Pilze wuchsen gut und schnell und auch der Verzehr war ein großes Vergnügen, 2g-3g pro Person trocken waren ideal für uns drei (alle um die 80kg) um eine schöne Erfahrung zusammeln. Review by Equality (Posted on 9/4/2018)
Very easy to grow, 1st flush gave 17.5g dried mass bud the 2nd only 2g of dried mass, Review by Filip (Posted on 8/8/2018)
No Quality
Хуйня полная!!! Its worst what whose I borrow!!! highly not recomended to buy fresh mushroom casing!!! you gonna wast your money and time!!!! and they not extra potential at all .
All type of flushes are the same, no matter wicth sort you get!!!
two words : bull shit!!!
[mms edit: sorry to hear you are not satisfied. Please contact customer support so they can give some advice.]
Review by DMITRIJ (Posted on 8/7/2018)
Super geil Review by Matthias (Posted on 7/31/2018)
Made for growing
I made almost all the mistakes possible, and I still had growth.
No precaution regarding germs, I watered after the shrooms started growing and sometimes forgot to water. I still had a great first flush that took me out of this world. I started second cycle and took off on vacation for a week, when I returned home, another flush, even bigger then the fist! Then I left the growbox submerged in water for 5 days in the fridge and now the third round of shrooms are starting to grow, this is absolutely amazing, easy and cheap!
Review by Johannes (Posted on 7/24/2018)
Value for money - good buy.
Produced a reasonable amount of B+ and so easy to grow. The only thing is the bag is a bit smaller than other grow kits i've had previously so had a little issue with it touching the sides of the container which forced water onto the top of the material. Was pleased though as very good value for money and excellent customer service in advising how to transfer money to purchase. Review by Janet (Posted on 7/3/2018)
Great product!
No contamination, first flush was simply excellent, the rest of the flushes were meh, but still very satisfied! :) Review by Toms (Posted on 6/5/2018)
Very positive experience! Definitely recommend!
Started pinning after a week and first flush another week later.
1st flush: 240g wet, 32g dry
2nd flush: ~50g wet (harvested over the course of several days and didn't document properly)

First flush was IMPRESSIVE, however, 'tis a shame the 2nd flush didn't perform well, but that was already disclosed by the shop in the description, so can't complain.

Thank you!
Review by tomsbee (Posted on 6/5/2018)
Not as Good as Usual
I purchased two boxes of these however they seem to have changed supplier as I found them to be rather lack luster.

The first box contaminated on first flush so I had to discard. I literally only got a handful from this box after a month or so. The second box took ages to fruit, the shrooms grew from the sides and I've had one small flush, waiting to see if we get another after rewatering.

As for the mushroom themselves, you get a good strong trip but they aren't anymore potent than regular b plus.
Review by Sarah (Posted on 5/16/2018)
Not as Good as Usual
I've had B plus in the past and never had a problem. However this time around one of my kits got contaminated off the bat despite me maintaining strict hygiene standards and using an air purifyer. I managed to get a handful of shrooms off this box and had to bin it.

Another problem I had was that the shrooms grew on the sides of the kit rather than the top, odd I've never had this before.

My second kit has just started fruiting after WEEKS. I have a few big shrooms but the vast majority of the mycelium is bare... Again not what I expect, usually the whole tub is populated as in pictures.

Can't really recommend these, I think they are using a different supplier or something. Off the few I did harvest I had a good trip but they aren't any different or stronger than B plus I've had in the past.

[ MMS Edit: This kit is indeed from a different supplier called FreshMushroom. These kits have a different grow instruction from other brands. The instructions for the FreshMushroom kits can be found on our website and on the product page ]
Review by Sarah (Posted on 5/12/2018)
Fast, low maintenance, great results
I was very surprised about the speed of the fresh mushroom grow kid. I did not even take a week until I saw the first pinheads and from then on I could basicly watch the shrooms grow.
I was also not used to the low level of maintenance, as I had to keep myself from spraying water, since that leads to too much moisture building up inside the bag.
My grow kid completed 3 plentyful flushes so far and I'll now go for the 4th one and see what happens.
I can definitely recommend the fresh mushroom grow kids. Although I would not say that the shrooms were more potent that usually, my friends and I enjoyed the trips a lot!
Review by Lani (Posted on 4/17/2018)

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Important information about FreshMushrooms® grow kit B+

  • You have to be 18 years or older to order this product
  • This product has shipping limitations. See the additional information to find out where we don't ship.
  • When you place an order you declare that you are aware of the legal status of the ordered product(s) in your country and that you are allowed to receive and posses these.
  • The use of magic mushrooms is at your own risk, so make sure to be well informed about the use and their effects.
  • The price does not include shipment.
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