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.

A steely blue oyster strain we prefer for outdoor spawn for log inoculations. Fruits best in cooler temperatures, up to 65 degrees.

A blue oyster strain from Nevada. Unknown fruiting conditions.

A blue oyster culture from mushrooms cultivated in Quito, Ecuador.

A high-yielding blue oyster strain. Unknown source.

Developed by Erik Lomen at Cap N' Stem, a blue oyster strain featuring flushes of smaller caps.

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.

Big, beautiful blue oysters from Nevada with large fruiting bodies and a tolerance for higher CO2 levels. 

A slightly more delicate, hot weather loving blue oyster with shades of beige to pale gray-blue.

Another good alternative to our PO1. Fast-growing. A very popular commercial strain from California.

High-yielding, thick-stemmed "King Blue" oyster from Mossy Creek.