Are you eager to cultivate your own mushrooms at home? With just one store-bought mushroom, you can kickstart the process of growing your very own fungal harvest. Let’s dive into the simple steps to create mushroom spawn, the essential ingredient for home mushroom cultivation.
Materials Needed:
- 1.5kg rice seed
- 100g cornmeal
- Plastic bottles
- Sterilized blade
- Cotton balls
- One store-bought mushroom

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Step-by-Step Guide:
1. Preparing the Rice Seed
Begin by boiling 1.5kg of rice seed in water for about an hour. After boiling, strain the rice seed to remove excess water.
2. Mixing in Cornmeal
In a clean space, mix the strained rice seed with 100g of cornmeal thoroughly. This combination creates an ideal environment for mushroom growth.
3. Preparing Plastic Bottles
Ensure clean plastic bottles are properly sterilized. Fill these bottles with the rice seed and cornmeal mixture, leaving some space at the top.
4. Inoculating with Mushroom Slices
Using a sterilized blade, slice the store-bought mushroom into small pieces. Place these slices into each bottle containing the rice seed and cornmeal mixture, distributing them evenly.
5. Sealing with Cotton Balls
Instead of conventional bottle caps, cover the opening of each bottle with a cotton ball. This allows necessary air exchange while keeping contaminants out.
6. Incubation Period
Store the bottles in a warm, dark, and clean environment for incubation. Over the next 8 to 9 days, the mycelium—the mushroom’s root system—will start to colonize the substrate.
Disclaimer: While this guide provides information on creating mushroom spawn at home using store-bought mushrooms, it’s essential to note that mushroom cultivation involves specific risks and techniques. Seek professional advice and be aware of potential hazards associated with mushroom cultivation. This information is purely for informative purposes, and individuals attempting this process do so at their own risk.
Growing Mushrooms Using the Spawn
Once your spawn is fully colonized, you can use it to grow mushrooms. Here’s a link https://og-oasis.com/2023/10/02/how-to-grow-mushrooms-at-home-in-buckets-with-holes/ to a comprehensive guide on growing mushrooms using the spawn you’ve created.