White oyster mushroom (Pleurotus ulmarius)

Pearl Oyster White Oyster Mushroom Cultivation

Organic White Oyster Mushroom Grain spawn

🍄 WHITE OYSTER GRAIN SPAWN: Pleurotus ostreatus var.ulmarius, one of the easiest varieties to grow.
🌱 VERSATILITY: Works well with a wide variety of growing media, such as straw and sawdust, offering optimal flexibility for both hobbyists and professional growers.
💪 DURABILITY AND RELIABILITY: Resistant to contamination, the oyster mushroom mycelium quickly colonizes its substrate, ensuring a hassle-free cultivation process.
☀️ GROWING FLEXIBILITY: Can be grown indoors or outdoors; ideal for mulching in the vegetable garden or on other natural surfaces.
🌍 LOCALLY GROWN AND ORGANIC: Certified "BE-BIO-01" by Certisys, guaranteeing an environmentally friendly, high-quality product.

€14.50

Volume

2.7 L (±1.5 kg)
5.4 L (±3 kg)

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Categories:
Outdoor Growing Indoor Growing grain spawn

Delivery time:

Approximately 2 weeks. See all our delivery times

The white oyster mushroom (also known as the elm oyster mushroom or snow oyster) is one of the easiest varieties to grow. Its mycelium adapts to a wide variety of substrates and is highly resistant to contamination.

It can be grown indoors or outdoors, for example on mulch in the vegetable garden.

This variety produces large white caps, up to 15 to 20 cm in diameter, especially during the second harvest.

❄️ Storage of the mycelium: 1 month in the refrigerator.

👉 See also: How to use our mycelium

🔍 Note: This variety belongs to the Pleurotus ostreatus species and is known as the "elm oyster mushroom" because of its association withHypsizygus ulmarius, with which it is often confused. However, this variety is more productive and easier to grow indoors thanHypsizygus ulmarius.

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

It can be grown indoors year-round. This variety is particularly sensitive to CO2 levels. When grown indoors, good ventilation is necessary to keep the plants compact and encourage the growth of the heads.

Outdoors, seeds are sown in early spring for a harvest summer or fall. It is essential to keep the soil moist during dry spells.

🛠️ Growing media

For indoor cultivation: Use pasteurized straw, pasteurized sawdust, or other lignocellulosic materials.

We recommend ourorganic straw pellets, which work particularly well with oyster mushrooms; simply add 1 teaspoon of lime and 2 liters of cold water per kilogram of pellets.

Our sawdust-based growing medium, which is suitable for wood-eating plant varieties, will also work very well.

📊 Growing conditions

Inoculation: 5–20% grains per unit of moist substrate

Phase	Temperature	Duration	Humidity	Light	CO2	Fresh air
Incubation	20–24°C	2–3 weeks	-	/	/	/
Formation of primordial cells	10–20°C	2–4 days	95–100%	500–1,000 lux	500–800 ppm	4 to 8 cubic feet per hour
fruiting	10–25°C	4–5 days	85–95%	400–600 lux	500–800 ppm, depending on the desired result	4 to 8 cubic feet per hour

📚 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 of 150–250 g of fresh mushrooms per 1 kg of moist substrate.