Organic White Oyster Mushroom Grain Spawn
- 🍄 MYCELIUM ON WHITE Oyster Mushroom Seeds: Pleurotus ostreatus var.ulmarius, one of the easiest varieties to grow.
- 🌱 ADAPTABILITY: Adapts to a wide variety of substrates, such as straw and sawdust, providing optimal flexibility for amateur and professional growers.
- 💪 ROBUSTNESS AND RELIABILITY: Resistant to contamination, the mycelium of the Elm oyster mushroom quickly colonizes its substrate, ensuring worry-free cultivation.
- ☀️ CULTURE FLEXIBILITY: Can be grown indoors or outdoors, ideal for mulching in the vegetable garden or on other natural supports.
- 🌍 LOCAL AND ORGANIC PRODUCTION: Certified “BE-BIO-01” by Certisys, guaranteeing an environmentally friendly and high quality product.
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+- 2 weeks. Consult all our deadlines
The white oyster mushroom (also called Elm oyster mushroom) is one of the easiest varieties to grow. Its mycelium adapts to a wide variety of substrates and resists contamination well.
It can be grown indoors or outdoors, for example on mulch in the vegetable garden.
This variety produces large white caps, reaching 15 to 20 cm, particularly during second harvests.
❄️ Mycelium conservation: 1 month in the refrigerator.
👉 See also: How to use our myceliums
🔍 Note: This variety is part of the Pleurotus ostreatus and bears the name "elm oyster mushroom" because of its association with the Hypsizygus ulmarius, with which it is often confused. However, this variety is more productive and easier to grow indoors than Hypsizygus ulmarius.
Our commitment to quality:
We produce our mycelia in laboratory conditions, which guarantees the purity of the varieties and optimal quality.
We produce our myceliums in a 100% organic way and all our products are certified "BE-BIO-01, Agriculture Belgium" by CERTISYS.
🌱 Growing conditions
It can be grown indoors all year round. This variety is particularly sensitive to CO2 levels. In indoor cultivation, good ventilation is necessary to limit the size of the plants and encourage the extension of the caps.
Outdoors, sowing is done in early spring for a harvest in early summer or autumn. It is essential to keep the substrate moist in case of drought.
🛠️ Substrates
In indoor cultivation: Use pasteurized straw, pasteurized sawdust or other lignocellulosic materials.
We recommend our organic straw pellets which work particularly well with oyster mushrooms, by simply adding 1 teaspoon of lime and 2 liters of cold water per kg of pellets.
Our wood chip-based substrate suitable for lignivorous varieties will also work very well.
📊 Culture settings
Inoculation : 5-20 % of mycelium on grains/moist substrate
| Phase | Temperature | Duration | Humidity | Light | CO2 | Fresh air |
|---|---|---|---|---|---|---|
| Incubation | 20-24°C | 2-3 weeks | - | / | / | / |
| Initiation of primordias | 10-20°C | 2-4 days | 95-100% | 500-1000 lux | 500-800 ppm | 4 to 8 volumes/h |
| Fructification | 10-25°C | 4-5 days | 85-95% | 400-600 lux | 500-800 ppm according to the desired result | 4 to 8 volumes/h |
📚 This data comes from the book “Growing Gourmet and Medicinal Mushrooms” by P. Stamets. They are given as an indication, each myciculturist having particular growing conditions, there may be individual variations.
📈 Productivity
Average harvest of 150-250 g of fresh mushrooms per 1 kg of wet substrate.
G1 Liquid Culture Syringes
€14,90–€39,50
Organic Blue Oyster Mushroom Grain Spawn
€13,90–€20,80
