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Magic Mushroom Grow Kit B+ XL by Mondo®

Magic mushroom B+ kit is recommended for it's high yield and big mushrooms. Without a doubt the Bee plus is one of the largest of all cubensis mushrooms. Perhaps the B+ Magic Mushroom grow kit is even the most resilient. Stories are not uncommon of people disposing the substrate in the garden after it has been exhausted only to find B+ magic mushrooms growing at the same spot the year after. A great beginner kit, that will never let you down.

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Product Description

Years of planning and testing has resulted in the next generation of Mondo® B+ XL magic mushroom grow kits. The  B+ XL grow kit is now even better than it ever was. Compared to the first generation of Mondo®XL magic mushroom grow kit, the next generation is improved with:

  • Larger yields, more mushrooms
  • More flushes*
  • Better resistance against contaminations
  • Different, but easier instructions


*some strains produce more flushes than others. The first three flushes are the largest.

Meet the new standard of easy grow kits

The Mondo® B+ XL magic mushroom grow kit is slightly different than the grow kits you may have used before. These are mainly 'under the hood' differences and are not easily seen.

Just like the previous and other easy mushoom grow kits, you do not need to use additional spores. During the laboratory process, the spores have developed in mycelium inside the substrate (the cake) in the grow box.

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 the grow kit in the refrigerator (2°C to 8°C) for 2 weeks after productiondate. First, wrap the grow kit in a plastic shopping bag and close it well.


  • 1x grow box – This contains substrate with active mycelium (the cake)
  • 1x large grow bag – The bag has micron filters to keep contaminants out
  • 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 to use


    How to prepare the room and yourself before you begin

    • Close any open windows. Wind or draft may bring microorganisms that can contaminate the Mondo® 'B+' XL 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 Mondo® 'B+' XL 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.


    Starting the process

    1. Fill the box with fresh, potable water. Close the grow box well and let is soak for 12 hours.
    2. After 12 hours, pour the surplus of water out of the grow box.
    3. Place the grow box inside the large grow bag. The open end of the bag should point upwards.
    4. Remove the lid from the grow box. Rinse the lid, and store it in the ziplock bag for later use. Place the ziplockbag with the lid back in the carton box.
    5. Fold the open end of large grow bag twice; do not cover the micron filter.
    6. Place the paperclip on the fold, so the bag stays closed. Now the Mondo® 'B+' XL Magic Mushroom grow kit is ready to grow.
    7. Place the Mondo® 'B+' XL Magic Mushroom grow kit inside the carton box, on top of the ziplock with lid.



    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 Mondo® 'B+' XL 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.

    Water / Misting

    The day after you start the process you begin with misting. Open the grow bag by removing the paperclip. Do not spray directly on the cake, but spray one time against every side of the bag. So you mist once a day, four sprays. Misting also vents fresh oxygen inside the bag. Right after misting, close the bag again with the paperclip.


    If the conditions are optimal, you can expect the first small mushrooms (the pins) to appear between 5 and 16 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. Remove the mushrooms from the cake by taking hold of the base of the mushroom between thumb and index finger. Rotating your hand clockwise slowly, until the mushroom lets go. Do not pull out the mushrooms. This would risk damaging the mycelium and killing it. 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.


    After all the mushrooms have been picked, you prepare the kit for the next flush. Again, with disinfected hands or gloves; take the grow box out of the large grow bag. Fill the box with fresh, potable water. Take the lid out of the ziplock bag and use it to close the grow box. Place the closed grow box in a soaking Bag or use your own clean plastic shopping bag and wrap it around the box. Close it well and place this in a refrigerator (2°C to 8°C) for 12 hours. This is called the soaking process. Water will now soak through the cake, preparing it for the next flush.

    During the soaking you can hang the grow bag with micronfilter upside down to dry. Make sure to hang it upside down, so no micro organisms will access the bag. Many growers prefer to use new and unused grow bags after every flush.

    After 12 hours take the soaking Bag with the grow box, out from the fridge and unpack it.

    Next Flush

    To continue, follow the same steps 3 – 7 as before when you started the process for the first time. Several days later, a new flush will appear. You can get at least 2 or 3 flushes out of a Mondo® 'B+' XL Magic mushroom grow kit. If you are experienced in cultivating, you can get more flushes out of a kit.

    The end

    When no more mushrooms grow out of a grow kit after the second flush for at least three weeks, or when the Mondo® 'B+' XL 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 Mondo® 'B+' XL 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 mb-mm2bp
    Weight (KG) 1.4000
    On Sale? No
    Alternative product: No
    Grow Kit type Mondo
    Difficulty Very Easy
    Size Extra Large
    Species Psilocybe cubensis
    Origin Unknown
    Potency Average / High
    Optimum cultivation temperature 23ºC
    Yield (from) 200 grams
    Yield (to) 600 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

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    very good product Review by remo
    very good product! and very good support!!! very professional site!! (Posted on 7/10/2020)
    Great product Review by Schroomi
    Just little less than one month after they arrived ,they were growing on top off each other .. (Posted on 7/3/2020)
    1st flush 300g !! Review by Alessandro
    amazing first flush! I bought the smaller box at first but contaminated cause I was too naive. now I got this, and I checked that the temperature remained always at 28°, and I kept them always under a table, not so much light.

    super surprising result!

    300g of fresh mushroom, and they were growing close to the sides of the box (the center was completely untouched).
    at least 20 big mushrooms of 10 grams each. wow!

    6 days after the first pins they were ready. still I have many little mushrooms growing on the very sides. I haven't picked them yet. I'll wait 2 days so they maybe grow above the substrate and I can pick them without removing the cake.

    thank you all for your reviews, they were very helpful! and thank MMS, amazing kit. (Posted on 6/18/2020)
    excellent culture Review by shroomerite
    I took the risk to fruit my substrate using a different technique than instructed and was greatly rewarded. I got two 8 liter storage boxes, cut my substrate into half and crumbled each half in the boxes, mixed with hydrated coco coir at a 1:1 ratio. This is called shoebox tek. The boxes yielded 250 and 300 grams wet in only their first flush. Starting the second flush now. This technique does add around 10-14 days to the growth time as the mycelium will have to recover and colonize the coir, but it's worth it. This is a slightly more advanced technique so if you plan to try it, make sure to do diligent research on the subject first. Fruiting this way increases the risk of contamination and will also void any "guarantee" as the growkit is not intended to be used this way. Lookup shoebox tek on shroomery. (Posted on 6/17/2020)
    Excellent experience - 11/10 Review by Brian
    First time attempting to grow and this kit did not disappoint! I just followed the steps as advised and kept everything very sterile. Thought it wasn't working at the start but after 2 weeks I noticed them starting! Very fun and exciting process! I've had two flushes with over 450g between the two and hopefully more flushes to come! Delivery was about 3 days which was fantastic. Couldn't recommend more! (Posted on 5/22/2020)
    Very good Growbox Review by Aloo
    I got around 8 flushen and it is still going !
    With right setup and environment the box will continue growing more and more ! (Posted on 5/12/2020)
    Good yield, be careful with misting! Review by Bienfriend
    In the end I got 3 reasonable flushes, and then some very small ones. Overall i got something like 500 g out of the kit. Potency is as expected, general dosage recommendations apply.
    One thing you should be careful about: If you actually follow the advice of misting every day (4 sprays), the kit may get waaay to moist. Too high humidity causes pins to die off. I think the overly humid environment killed some of my first flush. I then stopped misting and only sprayed when the kit was visibly dry (no more droplets on the bag). Worked perfectly. (Posted on 5/7/2020)
    Perfect Review by Antonio
    I live in Spain and they arrive quickly in 3-4 days even in the situation right now with the coronavirus. I also ordered the heat map and put them behind my desk. Followed the instructions and I have got 180gr in the first flush :) Half of it I will eat fresh in the following 2 weeks and the rest I'm drying in the oven with the lowest temp possible (around 40 degrees celsius) with a spoon in the door in order to not increase the humidity while drying before I get a dehydrator. Yesterday I eat 20 grs fresh and I loved the trip very introspective for me. I will go microdosing in the following weeks and with the dried ones I will go for a more intense trip. Thank u too much for the product and service :) (Posted on 4/23/2020)
    Potent and Big Review by Baruch
    After some initial growing difficulties with another strain I have sucessfully grown big fleshy potent mushrooms within 2-3 weeks. First flush around 120 grams. Thank you Team for being so helpful and lenient! (Posted on 4/9/2020)
    Perfect kit Review by Ainars
    One of the best kits grown. 3 decent flushes, of a lot of shrooms.
    Yesterday had 6th flush of about 2 portions. And looks like will have 1-2 more mini flushes.
    This week will order another kit! (Posted on 4/7/2020)
    Perfect kit Review by Ainars
    Had 3 decent flushes, actually largest was the second.
    Yesterday piched 6th flush of about 2 portions, and looks like will have 1-2 more mini flushes.
    Will be ordering another this week! (Posted on 4/7/2020)
    Even in terrible situation you will get enough Review by V
    Despite the fact that the mushrooms grew on the side. The result was 3 crops. In total, somewhere 400-450g. (Posted on 3/14/2020)
    Good experience Review by Uldix
    Had no problems, it was easy! (Posted on 1/30/2020)
    Easy to grow Review by ra
    Had no problems with this set up. It takes some time, between 2-3 weeks but the results are very good, therefore 5 stars. (Posted on 1/12/2020)
    Top product Review by Igors
    Great value. Didn't took long for first yield. Pins was all over the cake. Big fruits in every flush.
    Not my first grow. Took this as experiment to see how good is allready live mycelium kit. Wasn't disapointed. Everything was perfect, the product, the kit. Easy growing for firsttimers and great for experienced ones to skip some prep.:)
    Trip for me was energetic body lift & rabbithole of mind games. Minimal visuals.
    (Posted on 1/8/2020)
    Bad Quality Review by James
    I bought three different kits (B +, Mckennaii and Golden Teacher) the last time I ordered and they all grew perfectly and the quality was excellent, but this time I took a B + kit for the first flush three or four small mushrooms have grown on the sides, since nothing more, however I did exactly what I did the last time.

    @@Edit by MMS: Some times a kits needs a bit more attention to get started. Increase humidity, temperature and give it fresh air everyday. This should get the kit started. Need some more help send us some pictures and we have a look :) Not sure what to do? Read this blog post:

    (Posted on 12/20/2019)
    Good service and nice box Review by Littleboy
    Very good communication and service of the website. Shrooms not tested yet but first ones are appearing and looking quite well and cute (Posted on 8/4/2019)
    I was not lucky Review by Vania
    First of all, thanks to the store. It is not the first time that I deal with them and everything is ok.
    But specifically in this case, from the first harvest I gathered some 185g of wet mushrooms. What in my opinion is very small. The temperature was stable at 23 degrees. Also at the bottom of the package was water for constant moisture. (Posted on 6/5/2019)
    Be patient Review by Christopher
    I think, my second time I grow these friends.
    I read the reviews and have to say two things:

    - Be patient and
    - hold the temperature

    The temperature should be min. 21-23 C° !
    Best is 23-25 C°.
    And give water, so the air in the bag is humid!

    The B+ are strong and the high can be very meditative.

    Still the B+ it need some days longer to get the first pins.

    Good luck and have fun.
    (Posted on 4/22/2019)
    Quick, reliable, wonderful Review by Franek
    Pure bliss and only good experiences, percfect to enjoy on one's own as well as in good company, 5/5 (Posted on 4/16/2019)

    Items 41 to 60 of 116 total

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    Write Your Own Review

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    Important information about Mondo® Grow Kit B+ XL

    • 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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