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🍄 Cultivate your own magic—bulk substrate made simple and scalable!
Boomer Shroomer Dry Bulk Substrate is a premium, ready-to-pasteurize blend of 500g Coco Coir, 500g Vermiculite, and 100g Gypsum designed for home mushroom cultivation. Just add 16 cups of boiling water in a 5-gallon bucket, pasteurize overnight, and you get approximately 9-10 pounds of nutrient-rich substrate—enough for two inflatable monotubs. Perfect for beginners and seasoned growers alike, this substrate mix ensures optimal moisture retention and aeration, backed by a 4.7-star rating from over 260 happy cultivators.
| ASIN | B0C21QDHXX |
| Best Sellers Rank | 315,313 in Garden ( See Top 100 in Garden ) 2,154 in Gardening Soils |
| Brand | Boomer Shroomer |
| Brand Name | Boomer Shroomer |
| Customer Reviews | 4.7 out of 5 stars 262 Reviews |
| Global Trade Identification Number | 00196852195749 |
| Item Type Name | Bulk Substrate |
| Manufacturer | Boomer Shroomer |
| Style | Coco Coir , Vermiculite |
| Style Name | Coco Coir,Vermiculite |
| UPC | 196852195749 |
| Unit Count | 4731.76 millilitre |
| Volume | 5 Gallons |
M**N
This is an excellent substrate that 100% works. Sanitize and Sanitize again! :)
J**C
I love Boomer Shroomer! Always on point!
R**F
Best bag to grow mushrooms
A**S
Worked, no contam. And used a pot with a lid instead of a bucket.
R**S
Great Substrate!
Trustpilot
1 month ago
5 days ago