Premium Mushroom Substrate Blocks
Ready-to-fruit substrate blocks for professional growers and chefs. Grown sustainably in Devon using organic by-products.
View ProductsOur Substrate Products
High-quality substrate blocks for cultivating gourmet mushrooms. Each block is carefully prepared for consistent results.
Substrate Block
Lion's Mane Substrate Block
Premium ready-to-fruit substrate block for Lion's Mane mushrooms. Grown on organic peat-free substrate using sustainable by-products from local farms.
Substrate Block
King Oyster Substrate Block
High-yield substrate block for King Oyster mushrooms. Produces large, meaty mushrooms with excellent texture and flavour.
Substrate Block
Hen of Woods Substrate Block
Premium substrate for Hen of Woods (Maitake). Produces clusters with exceptional truffle-like flavour.
Substrate Pack
Mixed Substrate Pack (3 Blocks)
Assorted pack containing one block each of Lion's Mane, King Oyster, and Hen of Woods. Perfect for trying different varieties.
Sustainable Growing
At Dart Valley Fungi, we grow our substrate blocks using upcycled agricultural waste from local Devon producers. By transforming by-products from Barnaby's Brewhouse and Riverford Dairy into premium mushroom substrate, we create a truly circular local food system.
Our blocks are peat-free and organic, supporting biodiversity while producing consistent, high-quality results for professional cultivators.
Learn MoreWholesale Orders
For restaurants, professional growers, or high-volume orders, please email us to discuss pricing and delivery arrangements.
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