IllustrationMushroom Substrate
Supplemented Hardwood Prepared Substrate
A proposed 5 lb hardwood substrate bag with modest wheat-bran supplementation. Uninoculated, with no grain layer or culture.
$22.00 USDView product
Prepared substrate · uninoculatedTemporary branded illustration. Original photorealistic product imagery is still pending.
Mushroom Substrate
Master’s Mix Prepared Substrate Bag
A proposed 5 lb hydrated hardwood-and-soy-hull substrate bag, without grain or culture. Batch processing must be verified before supply.
$24.00USD · Catalog price
Plan your grow. Availability, final specifications and delivery are being confirmed. You can explore the real cart; checkout is not accepting orders yet.
- Hardwood sawdust and soy hulls
- No grain layer, no spawn, no culture
- Processing verification required before supply
SKU MGS-0119A question before you start?
Know what you are growing
Made for the right stage.
Master’s Mix is a commonly used hardwood-and-soy-hull base for a range of wood-loving gourmet mushrooms. This prepared-bag format uses a 50:50 blend by dry ingredient weight, hydrated and contained in a filter-patch bag. It contains no grain layer and no mushroom culture.
A nutrient-rich supplemented mix normally needs validated pressure sterilization and clean inoculation. Prepared or sealed is not the same as sterile: this catalog makes no sterility claim without supplier processing evidence. It is not a ready-to-fruit kit or an all-in-one grain bag.
A clear starting point
Product specifications
Catalog specifications for launch planning. Final supplier details, processing and batch information must be confirmed before sale.
| Stage | Prepared, uninoculated fruiting substrate |
|---|---|
| Format | 5 lb / approximately 2.27 kg hydrated |
| Dry formulation | 50% hardwood sawdust + 50% soy hulls |
| Grain or culture | Neither included |
| Processing assurance | Verification pending; not advertised as sterile |
Is this an all-in-one bag?
No. This is fruiting substrate only, without a grain portion or culture.
Is it a sterile substrate bag?
No verified sterility claim is made. A sterile substrate listing requires documented appropriate processing; sealed packaging alone is not evidence.
Is it appropriate for every mushroom?
No. Match the recipe to the strain. Shiitake often uses a more modestly supplemented hardwood formulation rather than treating Master’s Mix as a universal choice.
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