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B+ Supagro Magic Mushrooms Grow Kit

B+ Supa Gro? Yes, here it is the all time favorite B+ Psilocybe cubensis. The B+ is a huge growing, mind bending and resilient magic mushroom strain.

Want an easy and fast magic mushroom kit? Get the B+!

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Availability: Out of stock

Product Description

The B+ magic mushroom grow kit is a product of the SupaGro company. This company redefines the way magic mushroom grow kits are produced. A whole newly developed method of producing these B+ magic Mushroom grow kits has been developed. This has resulted in magic mushroom grow kits that can proudly wear the name: SUPA!

When comparing B+ SupaGro magic mushroom grow kits to the standard magic mushroom grow kits, there are differences you should be aware of:

  • The first two flushes are Supa Large! Up to 300 grams under perfect conditions
  • The first flush comes faster. First results can be expected after only a few days till a week.
  • Substrate is 100% colonized by mycelium.
  • Very contamination resistant.
  • A totally new designed SupaBag with venting holes. The substrate with mycelium (also called cake) really needs to breath.
  • No perlite on the bottom.
  • The lid has venting/expansion holes.


B+ SupaGro Grow Kits look different than other grow kits

The B+ SupaGro magic mushroom grow kit is different than the grow kits you might have seen before. After opening the carton box you see it. In plastic lid, eight holes were drilled. These holes were part of the production process.

You might have received a B+ SupaGro magic mushroom grow kit with the lid partially opened up. Sometimes this happens during transport. This is caused by a combination of the production process on one hand and the mycelium trying to expand on de other. When the mycelium is so well developed, it might push the lid up creating small openings. Don't worry, when this has happened, just continue with the procedure. The mycelium is so strong and well developed by now, contaminants well have a hard time to infect your B+ SupaGro magic mushroom grow kit.

Don't test this by not working hygienically. We recommend always using surgical gloves/a> or a good disinfectant when handling the kit. You should use a facemask to avoid breathing into the SupaBag and on the cake.

The SupaBag has holes

The SupaBag has two rows of holes. The top row is to let the oxygen in and the bottom row is to vent carbon dioxide out. There is no need to open the bag for ventilation as you might normally do with the standard grow bag with microfilter. When the SupaBag is placed correctly, this allows an optimal respiration gas balance for the mushroom growth.

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 B+ SupaGro magic mushroom grow kit inside a Soaking Bag in the refrigerator (2°C to 8°C) for 6 weeks.


  • 1x SupaGro grow box – This contains substrate with active mycelium (the cake)
  • 1x SupaBag – The bag has 2 layers of punched holes for ventilation.
  • 2x paperclip – For closing the grow bag.


You need

    • A Misting Bottle 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 B+ SupaGro 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 B+ SupaGro 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

    Do not soak the B+ grow kit! This is not needed at this stage.

    1. Place the grow box inside the SupaBag. The open end of the SupaBag should point upwards.
    2. Remove the lid from the SupaGro grow box. Rinse the lid, dry it and store it in the carton box for later use.
    3. Fold the open end of SupaBag twice; do not cover the venting holes.
    4. Place the paperclips on the fold, so the bag stays closed. Now the B+ SupaGro Magic Mushroom grow kit is ready to grow.
    5. Place the B+ SupaGro Magic Mushroom grow kit inside the carton box, on top of the lid.



    The ideal temperature is 24°C. Do not have the temperature drop under 18°C and not exceed 29°C. SupaGro does not recommend using an heating mat with their magic mushroom kits. Using a heating mat is at your own risk, no guarantees can be given


    The B+ SupaGro 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

    Misting should be started with on the day that the first mushrooms (pins) appear. Open the grow bag by removing the paperclips. 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 but only when the mushrooms are visible. 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 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.


    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 SupaBag. Fill the box with fresh, potable water. Take the lid out of the carton box 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 SupaBag upside down to dry. Make sure to hang it upside down, so no microorganisms will access the bag.

    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 1 – 5 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 large flushes out of a B+ SupaGro Magic mushroom grow kit. If you are experienced enough in cultivating, you can get more flushes out of a B+ SupaGro Magic mushroom grow kit. Up to 8 flushes!

    The end

    When no more mushrooms grow out of a grow kit after the second flush for at least three weeks, or when the B+ SupaGro 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 B+ SupaGro 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 sg-b+
    Weight (KG) 1.0000
    Alternative product: No
    Grow Kit type SupaGro
    Difficulty Easy
    Size 1200cc
    Species Psilocybe cubensis
    Origin N/A
    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, Germany, Iran, Middle East, South America, Canada, Estonia, Finland, Israel , New Zealand, Norway, Russia, Switzerland, Turkey, United Kingom, United States
    Customer Reviews (13)
    Not my best experience
    I had quite little yields growing from this strain and after drying them, they turned quite dark, almost black, the whole surface of the shrunk mushroom. I didn't try them for quite a while and when I did, after about 3 months of harvest, they didn't have such an intense effect as I would have expect it. Not the first choice I would recommend, but I am a first trier of this strain and never judge by having only tried something once.. Review by Daniel (Posted on 3/16/2019)
    Worked like a charm
    This kit was easy to start growing and produced really big shrooms. Review by Fredrik (Posted on 11/27/2018)
    Good quality kits
    Always had good results with the B+ kits - recommended! Review by Joshua (Posted on 10/23/2018)
    Best shrooms ever!!
    Very potent and fast growing.. very recommended Review by Dragan (Posted on 5/30/2018)
    This shrooms are very potent and you have nice trip.. very recommended :) Review by Dragan (Posted on 5/28/2018)
    No Mushrooms
    I bought this along with another make, a month and a half later it has done nothing but mould. Whilst i am onto my third crop with the other box.
    I followed instructions to resoak etc. however nothing happened.
    I wouldnt recommend for first time grower.
    Review by GeezyG (Posted on 5/19/2018)
    SUPER!!!!!!!! Review by ArtiKolo (Posted on 5/7/2018)
    perfect service
    first two kids where infiltrated with green mold. But the team was very friendly and helpful and send me 2 new kids.

    at the end everything was good.

    i have really to say, this was one of the uncomplicatest service in online trade i ever had.

    5 stars for the excellent service
    Review by Costner Kev (Posted on 2/28/2018)
    Very good company and speedy service
    I would recommend these as an easy grow and cultivate product. Review by Stephen (Posted on 2/9/2018)
    Amazing service and products
    After a bit of a misunderstanding on my part regarding storage of the mushrooms the people at magic-mushroom shop went above and beyond to rectify the situation. Amazing customer service and great products! if only there were more companies like this in the world! I highly recommend to buy through these guys, you wont be disappointed. Review by JB (Posted on 1/4/2018)
    5 star service, 1 star box
    This kit did not work for me , but after some confusion with my emails ,(see previous review) MagicMushroomShop went above and beyond to make things right . Top marks. These guys have the best customer service on the internet.
    5 star service, 1 star box.
    Thanks guys
    Review by Shane (Posted on 12/15/2017)
    Box of mould for £50
    I am sad to be writing this review as I have until now only had good experiences with MagicMushroomShop.

    However ,I recently purchased the SupaGro kit .
    As soon as it arrived I set it up, following the instructions carefully. I also used a face mask, disinfectant on hands , arms and work surface and placed the kit in a bright , clean area , on a heat mat, out of direct sunlight. After five days my kit was growing mould.

    This is my fourth grow kit but my first SupaGrow. Its also the only failed kit iv had. I am very disappointed , as the kit cost me a little over £50. I was of the belief that SupGro was more resilient than other kits , and that the B+ strain was more resilient than other mushrooms.

    I have not been able to contact customer support regarding my contaminated kit, in spite of me sending multiple emails over the last two weeks.I have checked my spam folder daily , I did recieve one confusing email addressed to the wrong name and asking for information I already supplied multiple times.I did reply to this email but five days later all has gone silent again. I would like to purchase another kit soon but I am looking for a new vendor as I no longer trust MagicMushroomShop with my money.

    A real shame, I did not want to write a negative review but as no one has been available to speak with me I feel I have no other options.

    [mms edit: Hello Shane, sorry to hear this. We have been receiving your emails and replied to them. Not sure why they did not reach you. Could you please telephone us? We do not have your phonenumber. You can find the number on your invoice. ^Izaak]
    Review by Shane (Posted on 12/12/2017)
    Awesome grow kit!
    From the get go the experience with Magic-Mushrooms-Shop was awesome! The support was there from the beginning for every question I've had. And I've had lots of questions as a beginner. The grow box was very easy to handle with the great instructions on the side (text/videos)!
    The grow box (B+ SupaGro) was doing its work in the best way I could imagine it. Even with a couple of beginner errors I've had two great yields so far (third one is on its way). No contaminations or whatsoever! But I really was taking care of desinfection and so on!

    I've got my first experience with mushrooms through this online shop here and it was a great one! Going to order another batch soon!

    Big thanks to the people behind "" for their great service!

    Review by Marc (Posted on 4/15/2017)
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    Important information about SupaGro® 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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