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🍄 Grow like a pro—unlock your mushroom farm’s full potential!
Myco Labs Premium Bulk Mushroom Substrate Mix is a 5 lb fully pasteurized, nutrient-optimized growing medium designed specifically for dung and grain-loving mushrooms. Its unique pasteurization technique preserves vital nutrients, while the calcium+ mineral blend ensures perfect pH balance. Pre-hydrated and ready to use, this substrate maximizes water retention and yield, making it ideal for both novice and expert cultivators seeking contamination-free, abundant harvests.





| ASIN | B0CQ33CN59 |
| Brand Name | Myco Labs |
| Customer Reviews | 4.4 4.4 out of 5 stars (299) |
| Global Trade Identification Number | 00850058190006 |
| Item Type Name | Substrate Bag |
| Item Weight | 5 Pounds |
| Manufacturer | Myco Labs |
| Style Name | American |
| Unit Count | 80.0 Milliliters |
| Volume | 5 Liters |
J**T
I used this along with their 5 grain spawn for my first few ever mushroom grows about a year ago and everything went great. No contamination and bountiful harvest.
S**C
Excellent quality
T**E
This is wonderfully moist, rich, sterile substrate. Mixed in a monotub with about 2 pounds of mycelium, using layered method. Was careful about sterility, but with 2 pounds of mycelium, it would be tough to screw up. Bought the spawn grain bag from north spore. I had a huge yield in about 3 weeks. Could barely see the substrate through the thick mushroom growth. Just used limited oxygen, grow lights, steady temp of 75, and constant moisture. Inside moisture should be 95 to 99%. If you do these things, they will come to you.
J**S
Looks perfect, doesnt have airport or injection port like grow bags do for all in one growing more just for mono tubs type of growing
J**S
no joke, i opened a bag of this up used half then rolled up the bag and threw it in a cupboard and forgot about it for at least 8 months. Found it looking fresh as the day i tossed it pasteurized it in my instantpot just to be safe and it is still going strong.