All-In-One Mushroom Grow Bag Instructions

Supplies/Materials

• All in One Mushroom Grow Bag
• Liquid Culture
• Spore Syringe (Optional)

Tools

• 70% Isopropyl Alcohol
• Spray Bottle
• Scissors
• Gloves

Instructions

1. 1.

   Preparation

   
   Before you do anything, get your workspace ready. Mushroom contamination almost always comes from the environment, not the bag itself, so a clean setup makes a real difference.

   If you have a still air box (SAB), use it. If not, work in the cleanest, least drafty spot you can find. A bathroom after a hot shower works surprisingly well. Wipe down your work surface with 70% isopropyl alcohol and let it dry completely before you start.

   
   

   Take a moment to inspect your bag before you open anything. Hold it up to a light source and look for any signs of contamination. Green, black, or pink patches are a bad sign. The bag itself should be fully intact with no tears or holes. 

   
   

   If anything looks off before the inoculation, we replace contaminated bags at no extra cost. Just keep in mind that we can only guarantee sterility up to that point, so make sure you are working with clean liquid culture or spore syringes.
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2. 2.

   Sterilize the Injection Port

   
   Your bag has a self-healing injection port, a small rubber square on the outside of the bag. This is where your syringe goes in.

   
   

   Also decide whether you want to use a spore syringe or a liquid culture syringe. From experience, liquid cultures give you much higher success rates. That is because spores inoculated directly onto grain still need to germinate first, which can take 1 to 2 weeks before colonization even starts. Liquid culture contains already-active mycelium, so it gets going within just a few days.

   
   

   Before injecting, wipe the port thoroughly with 70% isopropyl alcohol or use the alcohol swab included with your bag. Let it dry for about 30 seconds. This one step removes most surface bacteria that could otherwise hitch a ride into your bag on the needle.
3. 3.

   Inject the Bag

   
   Shake your spore syringe or liquid culture syringe for about 10 seconds to distribute the contents evenly, then push the needle through the injection port at a slight angle.

   Inject 3 to 6 ml per bag. More is not always better. Here is how much you should use for differently sized bags:

   
   

   1 Liter (1.5 lbs): 2 to 3 cc

   2 Liter (3 lbs): 3 to 4 cc

   3 Liter (5 lbs): 5 to 6 cc

   
   

   Aim for the grain section of the bag, not the substrate at the top. The grain is where colonization starts. Injecting into the substrate is just a waste. Distribute the liquid across a few different spots in the grain rather than putting it all in one place.

   
   

   If you are inoculating more than one bag, you should sterilize your needle between each bag. Either use a new needle, or hold a lighter flame to the needle for about 15 seconds and then wait 30 seconds for it to cool down completely before moving on. This prevents potential cross-contamination and one bad bag can ruin the rest if you skip this.
4. 4.

   Placement and Waiting

   
   Find a spot where the bag can sit undisturbed at room temperature. Mushroom mycelium grows best between 21 and 27°C (70 and 80°F). If your place runs cooler than 19°C (66°F), a seedling heating mat set to low works well. Light is not really important at this stage. Just keep the bag out of direct sunlight, which can heat the bag unevenly.

   
   

   Now comes the part that trips up most beginners: waiting. There is nothing to do here. Checking the bag once a week is more than enough. Leave it alone and let the mycelium do its thing.
5. 5.

   Watching Colonisation Begin

   
   Over the first week or two you will start to see a white, thread-like network spreading through the grain. That is mycelium, the actual organism that will eventually produce your mushrooms. Think of it as the root system. The denser and whiter it gets, the better things are going.

   
   

   Healthy mycelium is bright white and slightly fluffy. If you see anything green, black, pink, or slimy, that is contamination and the bag should be thrown out.
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6. 6.

   Break and Shake

   
   After roughly 2 to 4 weeks, the grain should be around 60 to 70% covered in white mycelium. Depending on temperature, strain, and genetics this can take a bit longer, so don't worry if it's not there yet.

   
   

   Once you hit that point, it's time to mix the bag. Despite the name, you don't need to literally break and shake anything. Gentle is fine and actually safer. Pick up the bag and slowly roll and squeeze it in your hands until the grain and substrate are mixed together evenly. Lay the bag flat, flip it right side up, and lightly press down on the surface to flatten it into a compact block.

   
   

   Put it back where it was and leave it alone for at least 2 weeks. Don't touch it, don't move it, don't open it. The mycelium needs time to recover and push through the substrate. If nothing seems to be happening after 2 weeks, just keep waiting. It's almost always slower than you expect, and patience here pays off.
7. 7.

   Ready to Fruit

   
   Once the entire block is covered in white mycelium and feels firm, it's ready for fruiting. Using clean scissors, cut along the sides of the bag about 10 cm (4 inches) above the surface of the block. Fold the sides down so the top of the block is exposed to open air. From this point on, fresh air exchange matters.

   
   

   Fan the open block gently a couple of times a day, or leave it in a spot with some natural air movement. Start misting once the water droplets on the inside walls have dried up, and make sure there are always fresh droplets visible on the walls. This is how you know the substrate is not drying out. Always spray the walls, never directly onto the block. 4 to 5 sprays are enough.
8. 8.

   Harvest

   
   Keep an eye on the caps as mushrooms start pushing up. The right time to harvest is just before the caps open and flatten out. This is when they are at their peak size and before they drop spores everywhere.

   
   

   To harvest, twist and pull the mushroom at the base in one clean motion, or cut it off with clean scissors close to the surface of the block. Try not to leave stubs behind as they can rot and affect the next flush.
9. 9.

   Rehydration for a Second Flush

   
   After your first harvest, the block needs moisture back before it can produce more mushrooms. Pour cold water directly into the bag and let it soak for 24 hours. The substrate will absorb a lot of the water. If it looks dry after a few hours, just add more.

   
   

   After 24 hours, drain any excess water, fold the bag back up, and put it back in its spot.

   New mushrooms should appear within 1 to 2 weeks. Most blocks will give you 2 to 3 flushes before they are done.

Conclusion