A Detailed Guide to Ganoderma Cultivation: Step-by-Step Instructions to Grow High-Quality Ganoderma

Ganoderma has extremely high medicinal value, but wild Ganoderma is relatively rare and expensive. At present, our country can already cultivate Ganoderma artificially. So, what are the cultivation methods for Ganoderma?

1. Building the shed

Choose a Ganoderma greenhouse that is warm and moisture-retentive, well ventilated, with appropriate light, smooth drainage, and easy management. The ground inside the shed must be clean, the walls smooth and clean, and the structure moisture-resistant. The size of the Ganoderma shed depends on the amount of culture material; it is generally built in woods or in shady spots in front of or behind a house, and a location close to a water source is most suitable. Before the culture material is brought into the shed, the mushroom shed must be strictly disinfected. For every cubic meter of space, use 5 ml of formaldehyde and 10 g of potassium permanganate, seal it, and fumigate for 24 hours. For spring planting, April to May is best; for autumn planting, September to October is best.

2. Preparing the culture material

For the culture material, use 77% cottonseed hulls, 10% wheat bran, 10% cornmeal, and 1% each of sugar, phosphate fertilizer, and gypsum. After the culture material is mixed well, use a bagging machine to fill bags. For plastic bags, choose polypropylene or polyethylene tube bags measuring 15 cm by 35 cm or 17 cm by 33 cm, with each bag containing 400-450 g of dry material. Polyethylene bags are sterilized under normal pressure for 10-12 hours, while polypropylene plastic bags are sterilized under high pressure for 2 hours. Wait until the material cools to below 30°C, then inoculate it in a sterile room. Turn the bags over from top to bottom once a week to ensure even temperature in the spawn bags, increase oxygen inside the bags, promote mycelial growth, and at the same time remove any spawn bags infected by green mold and other contaminants.

3. Mycelial growth management

Ganoderma is a heat-loving fungus. The optimal temperature for mycelial growth is 26-28°C, and the fruiting bodies grow best at 24-28°C; below 18°C, the fruiting bodies cannot develop normally. During the mycelial growth period, keep the temperature in the cultivation room at 22-30°C and the relative air humidity at 50%-60%. Ventilate for half an hour every day, and turn the spawn bags over from top to bottom once every 5-7 days. When the mycelium has covered two-thirds of the material bag, move it into the cultivation shed, loosen the bag opening, and gently lift it with your hand, leaving a small gap. Diffused light is suitable inside the shed; avoid direct strong light. After 25-32 days, the mycelium will have covered the entire material bag. For the occasional material bag with uneven mycelial development, it can be picked out and placed separately.

4. Fruiting management

After the mycelium has fully covered the material bag, use a blade to cut round openings the size of a 5-jiao coin at both ends to facilitate fruiting. During fruiting, keep the shed temperature at 26-30°C, raise the relative air humidity to 90%-95%, provide diffused light and sufficient oxygen, and keep a shallow layer of water on the ground. Open the door and vents for ventilation every day before 8 a.m. and after 4 p.m.; when the temperature is low, ventilate at 12 noon. When the primordium swells for 3-5 days and gradually forms a cap, increase water spraying to maintain moisture; when the temperature is too high, spray water to maintain moisture.

5. Harvesting

Stop spraying water 1 week before harvest, close the ventilation door openings, and lay plastic film on the ground of the passage to collect the released spore powder. After the spores are released, when the cap changes from soft to hard, has no pale white edge, changes in color from light yellow to reddish brown, and no longer grows or thickens, the mature Ganoderma can be harvested.

In addition, after harvesting, dry it in the shade promptly and bag it, then store or sell it in a dry indoor place. The finished product is considered best when it is dry, has a thick fleshy cap, a sturdy stipe, a hard texture, a reddish-brown color, and a lacquer-like luster.