Premium Raw Grain for Mushroom Cultivation

Description

Take full control of your substrate preparation with our premium-grade unsterilised grains. Specially selected for mushroom growers, these raw grains are low in debris and dust, giving you a clean starting material to soak, hydrate, and sterilise according to your exact culture preferences.

Key Features:

• Clean & Low-Debris: Pre-cleaned raw grain to minimize rinse times and reduce excess husks.

• Customisable Hydration: Prepare to your exact target moisture levels for liquid culture, agar transfers, or spore inoculations.

• Economical Bulk Option: Ideal for experienced growers processing larger batches with a pressure cooker or autoclave.

Grain Options & Varieties

• Whole Rye Grain: The traditional standard for spawn. Offers exceptional nutrient density and high moisture retention once cooked.

• Whole Wheat Grain: Plump kernels that soften evenly during soaking and break apart easily after sterilisation.

• White Millet: Small-seed format providing maximum inoculation points per jar or bag, leading to faster colonisation runs.

• Whole Grain Oats: Tough outer hull resists bursting during boiling and pressure cooking, reducing clumping and sticky grains.

• Popcorn Kernels: Large kernels create large air pockets for quick mycelium bridging and easy grain-to-grain (G2G) transfers.

• Brown Rice Grain: A highly accessible, nutrient-dense option ideal for delicate cultures or basic grain prep workflows.

How to Use (Preparation & Sterilisation Guide)

1. 1. Rinse: Rinse grains thoroughly with water to remove any residual dust or light chaff.

   2. Soak (Optional): Soak grains in water for 12–24 hours to achieve deep hydration and germinate endospores.

   3. Simmer / Boil: Cook grains on low heat until fully hydrated through to the centre, taking care not to burst the outer hulls.

   4. Dry Surface: Drain completely and spread grains out on a screen or towel until the exterior surface is dry to the touch (to prevent excess free water).

   5. Bag or Jar: Load grains into your choice of grow bags (with filter patches) or mason jars with modified lids.

   6. Sterilise: Pressure cook at 15 PSI (121°C / 250°F) for 90 to 120 minutes depending on volume. Allow to cool completely inside the cooker before inoculating.