Organic Blue Oyster Mushroom Grain Spawn

Gray oyster mushroom, "blue oyster", pleurotus ostreatus var. KB1 (columbinus)

Native to our temperate forests in Europe, the oyster mushroom generally grows on old trunks or dead branches. It is mainly found in autumn and at the end of winter. It is a mushroom rich in proteins, B vitamins and different amino acids. At the medicinal level, oyster mushroom has anti-tumor properties (Hobbs, 1995) and helps to reduce blood cholesterol levels (Gaudreau, 2010).

The oyster mushroom is a very simple mushroom to grow. Resistant, it adapts to a variety of substrates ranging from straw to sawdust. Today it is the second most cultivated mushroom in the world.

The caps range in size from 5 to 15 cm, color ranging from light gray to dark brown depending on growing conditions.

Our KB1 variety is part of what we call "pleurotus columbinus". These tend to have bluish colors with low fruiting temperatures (10-15°) at the start of fruiting.

This variety produces large caps and large diameter stems with a tender texture that is more tender than most other varieties of oyster mushrooms. This strain is the most productive we have. Furthermore, it is excellent in terms of taste and the conservation is good.

We recommend keeping the mycelia in the fridge(1-4°) and using it within a month of receipt.  

See also our tutorial: “ How to use our mycelia”

Our commitment to quality:

We produce our mycelia in laboratory conditions, which guarantees the purity of the varieties and optimal quality.

We produce our mycelia 100% organically and all our products are certified “ BE-BIO-01, Agriculture Belgium ” by CERTISYS.

Growing conditions

Can be grown all year round, ideal temperature between 12 and 20°. High humidity at the start of fruiting until the buds appear,

Remove the bunches by hand, turning them gently, before the edges of the caps turn brown and rise up. Remove any pieces of mushrooms, keep moist until the next harvest.

Substrates

In indoor cultivation: pasteurized straw, pasteurized sawdust and other lino-cellulose materials.

We recommend our “Optimal” substrate , particularly suitable for wood varieties. Our organic straw pellets are also suitable for growing oyster mushrooms.

In outdoor cultivation : logs /mulch.

Crop Settings

Inoculation

5-10% grain/wet substrate

Incubation

Initiation of the primordia

Fruiting

These data come in particular from the book “Growing gourmet and medicinal mushrooms” by P. Stamets. They are given as indications, each myciculturist having particular growing conditions, there may be individual variations.

Productivity

Average harvest 200-350 gr of fresh mushrooms per 1 kg of wet substrate, over 2 to 3 harvests.