A growing mushrooms in a bag is an ideal way to keep your mushrooms nourished and safe. They come in a variety of sizes and shapes, and are easy to clean.
Filter Patch: The filter patch on a mushroom grow bag is essential for keeping out airborne germs and spores of undesired fungus species (weeds). This mesh is so fine that it’s impossible for weeds to pass through, but it’s still large enough that your mushrooms can breath.
Straw Pellets: You can grow your mushrooms on chopped straw or wood pellets, which are pasteurized and sterile, making them ideal for use in your grow bag. You’ll need to fill about a third of your grow bag with the substrate, then add about 6.5 ounces of oyster mushroom grain spawn.
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Mushroom Sprout: You can buy mushroom spawn online, which you can then mix with the substrate you choose. The spawn is already colonized, so it’s easy to mix and add to the substrate.
Fruiting: After the substrate is fully colonized, it’s time to begin fruiting your mushrooms. You’ll need to provide your mushrooms with light, humidity and fresh air for this stage.
Humidity: Spray the grow bag daily with water to provide moisture. Most homes have a good amount of natural fresh air exchange, but you may need to open up a window once or twice a day for five to 10 minutes to ensure that your mushrooms are getting enough oxygen.
You’ll also want to open up the top of your grow bag periodically to get enough fresh air exchange. This helps the mycelium in the bag to keep up with the fruiting process.