Organic Shiitake Grain Spawn
- 🍄 SHIITAKE GRAIN SPAWN 3790: Lentinula edodes, an Asian variety renowned for its benefits and umami flavor.
- 🌱 INCUBATION: 10 weeks, which is relatively short compared to other varieties of shiitake mushrooms.
- 💪 DISEASE RESISTANCE: This strain of mycelium is particularly resistant to disease, ensuring a stable and reliable crop.
- 🍽️ SUPERIOR TEXTURE AND FLAVOR: This variety of shiitake mushrooms offers a meaty texture and an intense umami flavor, perfect for enhancing a variety of dishes.
- 🌍 LOCALLY GROWN AND ORGANIC: Certified "BE-BIO-01" by Certisys.
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Approximately 2 weeks. See all our delivery times
🍄 Strain
Shiitake mushrooms, known in Asia for over 7,000 years, are often called the “fragrant mushroom.” Rich in vitamins (particularly vitamins D and B) and trace minerals such as magnesium, phosphorus, and selenium, they offer numerous health benefits.
🎨 Shiitake mushrooms are characterized by their flat caps, which range in color from light brown to dark brown. Their flesh is firm yet tender, and depending on how they are cooked, they develop woody, earthy flavors with hints of hazelnut. The caps are generally between 3 and 6 cm in diameter.
❄️ Storage of the mycelium: 1 month in the refrigerator.
👉 See also: "How to use our mycelium"
Our commitment to quality:
We produce our mycelium in laboratory conditions, which ensures the purity of the strains and optimal quality.
We produce our mycelium using 100% organic methods, and all our products are certified "BE-BIO-01, Agriculture Belgique" by CERTISYS.

🌱 Growing conditions
Variety #3790 is one of the highest-yielding varieties on the market, while also producing fruit of exceptional quality.
🔄 Substrate incubation takes place in three stages:
- Establishment: 2 to 4 weeks
- Pop-Corning: 2 to 3 weeks
- Curing time: 2 to 3 weeks
Generally, the incubation period lasts about 10 weeks, and this is the most critical stage of the growing process. It is important not to move the bags during this time to avoid causing any stress. Maintain a stable temperature between 20 and 24°C throughout the incubation period.
💧 Maintaining a relatively low humidity level at the start of fruiting limit the number of primordia and promotes the development of large fruits.
🛠️ Growing media
For indoor cultivation: enriched and sterilized wood shavings. For outdoor cultivation: logs.
We recommend our ready-to-use substrate, which is particularly well-suited for wood-decaying varieties, including this type of shiitake.
📊 Settings
Inoculation: 5 to 10% grains per unit of moist substrate
| Phase | Temperature | Humidity | Duration | CO2 | Fresh air | Light |
|---|---|---|---|---|---|---|
| Incubation | 23–24°C | - | Colonization: 2–3 weeks Resting and ripening: approx. 8 weeks |
- | - | n/a |
| Formation of primordial cells | 10 to 15°C | 95% to 100% | 2–3 days | 500–800 ppm | 4 to 8 cubic feet per hour | 500 to 1,000 lux |
| fruiting | 10–20°C (Ideal: 15°C) | 85 to 95% | 5–7 days | 400–800 ppm | 5 to 8 cubic feet per hour | 500 to 1,000 lux |
📚 This information is taken from the book *Growing Gourmet and Medicinal Mushrooms* by P. Stamets. It is provided for general guidance only; since each mushroom grower has unique growing conditions, individual results may vary.
📈 Productivity
harvest : 200–300 g of fresh mushrooms per 1 kg of moist substrate, spread over one or two harvests.



