Perlite for Mushroom Cultivation

Perlite is a lightweight, porous volcanic rock that holds water on its surface. A 2–3 cm layer in the base of a fruiting chamber keeps humidity high and air moving, giving mushrooms the moist microclimate they need to form healthy pins and flushes.

Why Perlite?

• Absorbs and slowly releases moisture to maintain 90 %+ relative humidity.
• Porous structure improves air exchange and discourages stagnant pockets.
• Inert, mould‑resistant and reusable after a rinse and re‑hydration.

Basic Use

1. Hydrate: Soak perlite until saturated, then drain until no water drips.
2. Layer: Spread 2–3 cm in a monotub, SGFC or grow tent tray.
3. Maintain: Mist walls or lid when perlite surface looks dull‑dry.

Pack Sizes

• 1L pouch – enough for a small tabletop fruiting chamber.
• 5L bag – fills a standard SGFC or medium monotub.

Tips

• Do not let water pool under the perlite; drain excess before use.
• Check humidity with a hygrometer and adjust misting as needed.
• Rinse and sun‑dry perlite between grows to keep it clean.

Legal & Safety

For use with legal mushroom species only. Keep out of reach of children and pets.