Mycelium growth bed

A mycelium growth bed for optimal production of pure mycelium or a mycelium composite with controlled predictable properties, comprising:

• a tray having an enclosed wall and an attached floor;
• wherein the tray is adaptable to support the weight of a substrate positioned in the tray and inoculated with a fungal strain that produces mycelium;
• a lid attached to the tray;
• and
• wherein a CO2 concentration is above 3% in steady state conditions, a relative humidity is above 40% in steady state conditions, and wherein a O2 concentration is below 20% in steady state conditions to promote mycelium growth without fruiting body.

A method for producing optimized, efficient, high-throughput and low-cost pure mycelium or a mycelium composite with controlled predictable properties, the method comprising the steps of:

• a. providing a tray having an enclosed wall and a floor;
• b. positioning a substrate inoculated with a fungal strain on the tray;
• c. positioning a lid attached to the tray to form an optimal configuration;
• and
• d. wherein a CO2 concentration is above 3% in steady state conditions, a relative humidity is above 40% in steady state conditions, and wherein a O2 concentration is below 20% in steady state conditions to promote mycelium growth without fruiting bodies.