Bulk Grow Instructions | MyShrooms (2024)

Bulk Grow Instructions | MyShrooms (1)

Inoculation

Step 1

Inoculate your grain kit , this needs to be done asap after receiving kit. Click here to view the instructions.

Step 2

Once grain kit is fully colonized ( fully white ) you are ready to prepare your bulk substrate. Myshrooms guarantees that your grain spawn will colonize correctly but the bulk substrate and fruiting stages are up to you. If you are unsure if your grain kit is ready please mail pics tosales@myshrooms.co.za

Bulk Substrate Prep

* you will need a thermometer that can measure 65 C – 75 C for this step.

Step 3

Place a large pot of water on your stove on the lowest setting. Place your thermometer inside and heat until water reaches 75 c.

Step 4

Fold a kitchen towel and place it inside the pot at the bottom so when you add your substrate bag it does not come into direct contact with the hot underside of the pot.

Step 5

Empty the ziplock bag full of your bulk substrate into a clean bowl ( discard the ziplock bag it is not used for pasteurization) . Add 700 ml of clean water to your bulk substrate ( if you are unsure about the quality of tap water use bottled water instead. Mix together well and break up any large pieces of soil. Your substrate should be at ” field capacity “. You can test this by gathering a handful and squeezing – a few drops of water should run out when you squeeze hard. If not add small amounts of water until you get to this level.

Step 6

Empty the bulk substrate into the second bag that is heat sealed on the bottom and submerge it in your pot of water ( keep the open end of the bag outside the water you do not want extra water getting inside). Take the thermometer and put it in the middle of your bulk substrate.

Step 7

Keep stove on low setting and slowly heat up the bulk substrate, you want the inside temperature to be between 65 c – 75 c.

Step 8

When the inner temperature reaches 65 c – 75 c begin timing, you want the inner temperature to stay between that range for for 90 minutes. You may need to switch your stove on/off multiple times to achieve this.

Step 9

Once ready tie a knot in the excess plastic and allow to cool to room temperature. This could take a while maybe overnight. Do not open the bag as the contents are now pasteurized and could easily get contaminated.

Spawn to monotub

Step 10

Get your monotub ready by spraying the insides with your isopropyl alcohol spray and wiping with a clean cloth. Clean the tub and lid well and then put lid on and keep closed.

Step 11

Scrub your hands and arms and wear a mask.

Step 12

Put on your gloves and clean a pair of scissors or knife with isopropyl alcohol spray. Spray your gloves to make sure your hands are clean. Spray then open your substrate bag and empty contents into monotub (try not get soil on the white filters in the holes of your monotub).

Step 13

Spray the lid of the grain kit, open and tip contents into monotub with your bulk substrate. Mix both together well you may need to gently crumble the grain into small/individual pieces. Once added gently press the soil down and compact it by about 1 cm. Try do this step as quickly as possible.

Step 14

Put lid back on monotub and don’t open again until colonized.

Step 15

7-10 days later your monotub should be well colonized with a layer of white mycelium and barely any soil visible. It is ready to fruit.

Step 16

Take lid off monotub about 3 times a day and firstly squirt water inside the walls of monotub and lid. Then gently fan inside for about 30sec. Avoid spraying your substrate directly but keep the sides of the tub moist throughout the day.

Step 17

You should get fruits 7-10 days later.

Step 18

Dont forget after your first flush you can add a cup of water and allow to rehydrate for an hour before draining excess water out. Place back into fruiting conditions and you should get a second and even third flush.

Thanks for your support , we hope to hear from you soon.

If there is a product or strain you would like that we do not have listed please let us know.

Bulk Grow Instructions | MyShrooms (2024)

FAQs

How long does it take for bulk substrate to colonize? ›

Depending on how much spawn is used, colonization may take 5 days to 2 weeks. The more spawn used the faster the bulk substrate will colonize. Recommended spawn ratios are usually no less than 20% (1 part spawn to 4 parts substrate).

What happens if the substrate is too wet? ›

However, if you have too much moisture, your mycelium will also be stunted, as it will suffocate. With too much moisture, your substrate will also have a higher risk of contamination from other organisms.

How to tell when a MonoTub is ready to fruit? ›

After about 14-21 days from spawning, you should see your first pins. These are baby mushrooms, that will grow and develop into mature mushroom fruiting bodies over the next few days.

Should I mist my bulk substrate? ›

Avoid spraying your substrate directly but keep the sides of the tub moist throughout the day.

How long can bulk substrate sit? ›

Store your 50/50 substrate in a cool and dry location. 50/50 substrate can keep for up to 4 months in these conditions. There will be no need to rehydrated or sterilize the products a second time. If you need to store the product longer it can be refrigerated for up to 6 months and frozen for up to 1 year.

Does bulk substrate need to be sterile? ›

This resistance to contamination is the reason bulk substrate can be inoculated with spawn in open spaces without taking special sterile precautions. Even with these micro organisms, mycelium will still able to grow on this substrate though.

When to fruit bulk substrate? ›

Once your substrate is fully colonized you will need to decide how you want to fruit it. This can be achieved by leaving the substrate in the bag to fruit or moving it to an external location like a plastic tote, terrarium or mono tub.

How to tell if mushroom substrate is too dry? ›

A) lots of water dripping shows that the substrate is too wet. b) a few drops released with some pressure show that the substrate is well watered. If it is too dry then with no drops will be released with pressure.

What is the bulk substrate for cubensis? ›

The Psilocybe Cubensis family is known to grow well on a standard bulk substrate recipe – a mixture of coco-coir / vermiculite / gypsum (CVG).

How much moisture does mycelium need to grow? ›

The growth environment (i.e., temperature, relative humidity, access to oxygen, clean/ventilated air exchange, and lighting conditions) also impacts mycelium growth. The temperature should be kept at around 25–30 °C [7,13,34] and the relative humidity around 70–80% [7].

How moist should my substrate be? ›

No water is running from your hand, and the substrate remains in a ball-shape when you open your hand: The moisture level is ideal for filling trays and pots.

What temperature should a Cubensis Monotub be? ›

It's best practice to store your tub away from direct sunlight and in a temperature controlled room between 65 and 75° F. An area that's too hot will dry out your mycelium and promote contamination, an area that's too cold will slow the colonization process down significantly, if not completely.

How do you trigger fruiting? ›

Creating Conditions for Fruiting
  1. High humidity. Most species like 80 to 95% humidity.
  2. Ideal temperature for fruiting — varies with species and strain. Oyster and shiitake have cold and warm weather strain. ...
  3. Good air exchange — ventilation or fan, low CO2 levels.
  4. Enough light. Indirect sunlight for most species.

What does a fully colonized monotub look like? ›

It will take approximately 5-14 days for the substrate to completely colonize with mycelium (you will be able to tell if it has completed colonization when the substrate has turned completely white).

How long does a Monotub take to Colonise? ›

Your tub should take around 2 to 3 weeks to fully colonize. Check on your bin daily. You'll see white spots start to expand from each point of grain spawn. Over time they will completely cover the surface of the bulk substrate.

How long does it take to sterilize bulk substrate? ›

To sterilize a substrate, you need temperatures higher than 250°F (121°C) for at least 2 hours. Boiling water or steam on its own is not hot enough to sterilize a substrate as the boiling temperature of water at sea level is 212°F (100°C), and at higher altitudes, it's even lower.

How do you know when substrate is fully colonized? ›

Fully-colonized substrate is substrate that the mycelium has grown out into to a degree that mushrooms can be grown from. When the substrate is inoculated with mushroom spawn, which is done by putting the mycelium in the substrate, the mycelium grows all throughout the substrate and cannot be separated.

How do you make substrate colonize faster? ›

Alternating between the spawn and substrate allows for faster colonization than putting all the spawn on top. In supplemented sawdust this typically means shaking the substrate after inoculation to distribute the spawn evenly.

References

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