Substrate | Williams Co Supplies

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Collection: Substrate

Various ready-to-use bulk substrates, making the whole spawn to bulk process extremely easy.
Simply open up the heat sealed bag and mix with your colonised grains.
Need help calculating how much substrate you need? Here's our handy substrate calculator

13 products
  • Substr8™ High Performance Mushroom Substrate 5L
    Regular price
    $52.00
    Sale price
    $52.00
    Regular price
    $65.00
    Unit price
    per 
    Sold out
  • 5L Pasteurised Coco Coir Mushroom Bulk Substrate
    Pasteurised Coco Coir Mushroom Bulk Substrate
    Regular price
    $33.00
    Sale price
    $33.00
    Regular price
    $33.00
    Unit price
    per 
    Sold out
  • Pasteurised Coco Coir Mushroom Bulk Substrate
    Pasteurised Coco Coir Mushroom Bulk Substrate
    Regular price
    from $11.00
    Sale price
    from $11.00
    Regular price
    Unit price
    per 
    Sold out
  • 5LB / 2.2KG Pasteurised Manure Mushroom Bulk Substrate
    5LB / 2.2KG Pasteurised Manure Mushroom Bulk Substrate
    Regular price
    $33.00
    Sale price
    $33.00
    Regular price
    $39.00
    Unit price
    per 
    Sold out
  • Mycelial Growth Promoter™ 60ml
    Mycelial Growth Promoter
    Regular price
    $20.00
    Sale price
    $20.00
    Regular price
    $33.00
    Unit price
    per 
    Sold out
  • Exotyc™ Zoo Manure Mushroom Substrate 5L
    Regular price
    $45.00
    Sale price
    $45.00
    Regular price
    $65.00
    Unit price
    per 
    Sold out
  • 5LB / 2.2KG Sterilised Masters Mix Substrate | Fruiting Block
    5LB / 2.2KG Sterilised Masters Mix Substrate | Fruiting Block
    Regular price
    $39.00
    Sale price
    $39.00
    Regular price
    $39.00
    Unit price
    per 
    Sold out
  • 5LB / 2.2KG Sterilised Supplemented Hardwood Substrate | Fruiting Block
    5LB / 2.2KG Sterilised Supplemented Hardwood Substrate | Fruiting Block
    Regular price
    $39.00
    Sale price
    $39.00
    Regular price
    $39.00
    Unit price
    per 
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  • 5LB / 2.2KG Sterilised Master Straw Mix Substrate | Fruiting Block
    5LB / 2.2KG Sterilised Master Straw Mix Substrate | Fruiting Block
    Regular price
    $39.00
    Sale price
    $39.00
    Regular price
    $39.00
    Unit price
    per 
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  • pH Adjusted Casing Layer
    Regular price
    $16.00
    Sale price
    $16.00
    Regular price
    Unit price
    per 
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  • 30-240L Pasteurised Coco Coir | SAVE UP TO 30%
    Regular price
    from $174.00
    Sale price
    from $174.00
    Regular price
    $193.00
    Unit price
    per 
    Sold out
  • 30-240L Substr8™ High Performance Mushroom Substrate | SAVE UP TO 30%
    Regular price
    from $277.00
    Sale price
    from $277.00
    Regular price
    $65.00
    Unit price
    per 
    Sold out
  • Substr8™ Inject & Forget Mushroom Grow Kit | 1.25KG
    Regular price
    $39.00
    Sale price
    $39.00
    Regular price
    $52.00
    Unit price
    per 
    Sold out