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Liquid Fungi  |  SKU: 310003801604

Black Pearl King Oyster Mushroom Grain Spawn (1 pound)

$15.00 $20.00
Shipping calculated at checkout.

Black Pearl King Oyster Mushroom Identification

Classification: Pleurotus ostreatus

Other Names: Black Pearl Oyster

Black Pearl King Oyster Mushroom Substrates

Sterilized Hardwood Substrate

Hardwood Logs, Supplemented Sawdust Blocks, Pasteurized Straw, Other Cellulose Products

Petri: Malt Extract Agar, Dextrose Agar

Spawn: Rye Berries, Millet, Oats, Corn

Black Pearl King Oyster Mushroom Environmental Information

Cold Temperature

Incubation Temperature: 70F-80F

Incubation Time: 12-14 Days

Fruiting Temperature: 55F-65F

Fruiting Humidity: 85%-93%

Pinning Time: 4-10 Days

Total Fruiting Time: 14-18 Days

Beginners Favorite

This is an easy species to grow and fruit, ideal for people who are just starting out.

The Black Pearl Oyster or Black Pearl King Oyster is a oyster mushroom (Pleurotus ostreatus) hybrid from Japan. It is the result of a cross between a European and an Asian Pleurotus ostreatus. It grows and looks much like Pleurotus eryngii (King Oyster) in the beginning as it matures it will look more like a Pleurotus ostreatus (Pearl Oyster). Black Pearl Kings are less finicky than Pleurotus eryngii, and are able to grow very well indoors. Grows on the same substrates as pearl or king oysters such as masters mix or hardwood sawdust (HWFP). It is a fast substrate colonizer that fruits dense, meaty mushrooms.


Our Black Pearl King Oyster Mushroom Grain Spawn is grown on 100% certified organic rye berries. It arrives contaminate free, fully developed, and ready to use. Black Pearl King Oyster Mushroom Grain Spawn is used to inoculate many bags of bulk substrate quickly. Transferring grain into bulk substrate bags is the choice methodology for medium and large scale growers. Black Pearl King Oyster Mushroom Grain transfers are usually performed in a flow-hood or bio-cabinet. Simply break up the Black Pearl King Oyster Mushroom Grain Spawn, then transfer grains to each bag you want to inoculate.

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Liquid Fungi

Black Pearl King Oyster Mushroom Grain Spawn (1 pound)

$15.00 $20.00

The Black Pearl Oyster or Black Pearl King Oyster is a oyster mushroom (Pleurotus ostreatus) hybrid from Japan. It is the result of a cross between a European and an Asian Pleurotus ostreatus. It grows and looks much like Pleurotus eryngii (King Oyster) in the beginning as it matures it will look more like a Pleurotus ostreatus (Pearl Oyster). Black Pearl Kings are less finicky than Pleurotus eryngii, and are able to grow very well indoors. Grows on the same substrates as pearl or king oysters such as masters mix or hardwood sawdust (HWFP). It is a fast substrate colonizer that fruits dense, meaty mushrooms.


Our Black Pearl King Oyster Mushroom Grain Spawn is grown on 100% certified organic rye berries. It arrives contaminate free, fully developed, and ready to use. Black Pearl King Oyster Mushroom Grain Spawn is used to inoculate many bags of bulk substrate quickly. Transferring grain into bulk substrate bags is the choice methodology for medium and large scale growers. Black Pearl King Oyster Mushroom Grain transfers are usually performed in a flow-hood or bio-cabinet. Simply break up the Black Pearl King Oyster Mushroom Grain Spawn, then transfer grains to each bag you want to inoculate.

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