The Grey Oyster mushroom (Pleurotus Ostreatus) is one of the best and easiest mushrooms for home cultivators to grow. This strain is also referred to as the blue oyster as it sometimes has a blue hue, but this is just marketing. The blue is slight and not always apparent, depending on the light it receives.

Grey oyster spawn - 100g bags

Ready to inoculate substrate, such as pasteurised straw.

100g of this spawn is enough to inoculate between 2 to 4kg of wet straw or other wet mushroom substrate. We recommend 2kg for faster colonisation, do not use more than 4kg of substrate with 100g of this spawn.