Mushroom is an umami flavored fungi relished by many around the world. It is consumed for a myriad of health benefits as a stand-alone snack or added to dishes to enhance their flavor. Mushrooms are almost fat-free, low on calories, and contain essential nutrients such as potassium, phosphorus, B vitamins, antioxidants, etc. Many nature enthusiasts take up the hobby of cultivating mushrooms at home since growing any fruit or vegetable (and in this case, a fungus) gives you a sense of accomplishment and is also a great way to connect with nature. While you can easily find pre-colonized mushroom growing kits online, many harvesters are now learning how to grow mushrooms at home without spores.
Mushroom spores are tiny reproductive cells that replicate the mother mushroom’s blueprint and grow into new mushrooms. However, seasoned mushroom harvesters avoid using the spores for cultivation since the spores do not produce mushrooms with the same genetic strain.
Therefore, you may not necessarily get the mushroom you desire.
To maintain an identical genetic strain, cultivators are now using the tissue culture technique for growing mushrooms without a kit. Whether you wish to harvest mushrooms as a hobby or grow them commercially, searching “how to grow mushrooms at home without spores?” can help you learn how to grow mushrooms.
Mushrooms grow best in a dark, cool, and humid environment, and therefore growing mushrooms indoors is easier since you can control the growing environment. Spots such as the basement or area under the sink are ideal for cultivating your stash of mushrooms. There are a variety of mushrooms that you can experiment with while learning how to grow them at home. Some of the popular varieties that you can try for growing mushrooms without a kit are Oyster mushrooms, Shitake, Button/Crimini/Portobello mushrooms, and Enoki mushrooms.
Other varieties that you can experiment with to learn how to grow mushrooms at home without spore include Blue Oyster, Lion’s Mane, and King Trumpet. However, if you are a beginner, you should go for shitake or button mushrooms.
Growing mushrooms without a kit is done using the tissue culture process. Most varieties of mushrooms grow well in a temperature range of 55 to 60°F and require a dark and humid environment. In this tutorial, we will teach you step-by-step how to grow mushrooms at home without spores. If you have been searching for “how to grow mushrooms without spawn” we will teach you how to produce the mycelium using the mushroom strain and agar in a petri dish. The resulting mycelium can be used to create spawn on your own.
The first step begins with the identification of the right spot indoors for cultivating your mushroom. Any room that is dark, cool, and closed from all sides will work well as your harvesting station. You need to sterilize the room and all the tools that you will be using to grow your mushrooms. You can use an air filter to purify the air in the room. For the tools using 70%, isopropyl alcohol will work well for killing any bacteria.
When learning “how to grow shrooms without spores?” the next step is to grow the mushroom tissue culture called the mycelium. For this, you will require an agar plate which is a sterilized petri dish with agar as a growing medium. The agar will facilitate the fungi culture in the right environment and temperature. All you need to do is take a tiny piece of mushroom that you wish to grow and place it on the agar plate.
Keep the agar plate in a dark room or a cabinet for around two weeks. Make sure to keep it a little moist and maintain a temperature of around 21°C (70 F) for the mushroom tissue culture to grow and fill the entire agar plate. This mycelium will be used to grow your mushroom harvest.
The next step is to create a spawning substrate, which is an organic medium for the mycelium to grow and increase in size. While different mushrooms grow in different substrates, the most commonly used spawn substrate is barley. Follow these steps to create a spawn.
When learning how to grow mushrooms without spawn, it is important that you select the right substrate for growing mushrooms. Button mushrooms respond well to compost, while the shitake and oyster mushrooms grow best on sawdust, woodchips, or straw. Choosing a substrate different than the one used for spawn yields better results since a new material provides extra nutrients for mushroom growth. Once you have procured the substrate, you will also need to pasteurize or sterilize it before introducing the spawn.
Preparation of the substrate requires sterilizing the organic material before the spawn is introduced to the bulk material. If using compost, select the one that is full of white actinomycetes bacteria. The compost can be sterilized by heating it up to a recommended temperature to kill the harmful bacteria while keeping the beneficial microbes intact.
Once sterilized, calcium sulfate is added to the compost to ready it for harvesting. If you are using material like sawdust or wood chips, all you need to do is steep them in hot water to remove any harmful bacteria.
The final step is to add the grown mycelium or the spawn to the bulk substrate. The proportion of barley spawn and the straw substrate should be 5% barley and 95% straw. Put the mix in bigger bags and place them in a dark room. At all times, the temperature of 15°C to 21°C (60°F to 70°F) should be maintained along with 90 to 100% humidity and a low air exchange rate. It will take around 7 to 14 days for the mycelium to overtake the entire bag, provided that the right growth conditions are maintained.
When the mycelium overtakes the large bags, it is time to induce pin heading by making holes in the bag, dropping the temperature to 10°C to 18°C, and increasing the air exchange rate and humidity. At this stage, indirect light is also introduced to allow the mycelium to form tiny knots that will grow into pins and later into full-grown mushrooms. Depending on the mushroom type, it should take 3 to 10 days for the mycelium to start pin heading.
The last stage is to allow the pinheads to develop into full-grown mushrooms. At this stage, you will have to increase the room temperature between 15°C to 30°C. The other factors will remain more or less the same. Allow the pins to grow for 3 to 8 days in this environment to get your first mushroom harvest.
When learning “how to grow mushrooms without spawn?” it can around 14 to 32 days for the mushroom to mature, starting from the day the spawn is introduced into the bulk substrate.
In the process of learning how to grow shrooms without spores, you will have to keep the following points in mind.
The best way to grow mushrooms without a kit is through the tissue culture technique that uses the mycelium to produce genetically identical mushrooms.
Yes, you can grow different varieties of mushrooms at home as long as you give them the right temperature and humidity for growth.
Mushrooms do not require sunlight since they don’t produce chlorophyll. However, they do require indirect sunlight or any dim light during their fruiting stage.
Most of the mushrooms are harvested between 30 to 40 days.
Yes, you can derive spores from store-bought mushrooms. To do so:
The joy of harvesting your own crop is unparalleled. Therefore, learning how to grow mushrooms at home without spores can be a great experience. If you are up for the task, start with easy varieties such as oyster or button mushrooms as they are more tolerant to temperature fluctuations.
While you can get pre-colonized mushroom growing kits in the market, growing them on your own will give you more confidence as a gardener. Plus, you will also save money by growing mushrooms without a kit. One last piece of advice that we want to give to all home growers is not to lose hope. You may not get the desired result in the first attempt, but keep trying until you reach perfection.