Vermiculite absorbs water and is a key ingredient in many aspects of mushroom growing and fruiting. Vermiculite is a popular add on to almost any kit; tub; jar; cake; substrate  casing or growing project.

• Use to roll your colonised cakes in after dunking. This helps them stay hydrated and grow bigger.
• Add a thin layer to any bulk grow and mist with water. This helps it absorb water and keeps the cake better hydrated to create bigger mushrooms.
• Great for substrate aeration.