- Commercial | Organic Blue Oyster Grain Spawn
Commercial | Organic Blue Oyster Grain Spawn
|Grow location||Indoor & outdoor|
|Spawn shelf life||4 months (refrigerated)|
|Flavor profile||Savory, meaty, earthy|
|Certifications||USDA certified organic|
|Bag weight||6 lbs|
Blue Oyster (Pleurotus ostreatus) is a fast substrate colonizer with a strong bluish-gray hue that produces richly umami mushrooms with a soft, meaty texture. Blue oysters are great for beginners, and as our most productive oyster strain, they are reliable indoor year-round producers. If kept in the right conditions, they will yield substantial first, second, and even third harvests (making them one of the best commercial varieties!) When cultivated outdoors, they are generally cold tolerant and fruit prolifically in early spring or late fall.
Blue oyster grain spawn can be used for indoor production using sawdust or straw or outdoor production using straw or wood chips.
Scroll down for descriptions of available strains.
Pleurotus ostreatus. This is a very productive commercial strain of blue oyster from Pennsylvania. It produces dense clusters with dark gray/blue caps. It produces best in cooler temperatures but also performs well during the warmer months. Averages 1-2 lbs first flush off of 5 lb supplemented sawdust blocks but will also produce off sterilized straw substrate.
Pleurotus ostreatus. An alternative blue oyster strain. Darker and denser than our PO1 with a more impressive first flush but a lower tolerance for warm temperatures. A serious Oyster with a serious name.
Pleurotus ostreatus. A slightly more delicate, hot weather loving blue oyster with shades of beige to pale gray-blue.
Pleurotus ostreatus. High-yielding, thick-stemmed "King Blue" oyster strain from Mossy Creek.
Colonization Temps 75 degrees F Fruiting Temps 55-75 degrees F CO2 Sensitivity <1000 ppm
Oyster mushroom grain spawn can be mixed into sterilized or lime pasteurized substrates including but not limited to hardwood sawdust, straw, and coffee grounds.
Note: Grain spawn must be mixed with bulk substrate before you can fruit it. If you are new to growing mushrooms, we recommend purchasing a book on mushroom cultivation.
'Growing Gourmet and Medicinal Mushrooms' by Paul Stamets
'Organic Mushroom Farming and Mycoremediation' by Tradd Cotter
Oyster spawn can be spread in chopped straw or wood chips as shown in the video below! Making outdoor beds is one of the easiest methods for growing any type of oyster mushroom.
For our complete mushroom beds pamphlet, click here.
Be sure to use clean, untreated products when making outdoor beds.
If you don't plan to use immediately, you can refrigerate your spawn for up to 4 months.