Blue oyster mushroom grain spawn

Blue Oyster Mushrooms are a stunning and flavourful variety of oyster mushroom. They begin with vibrant blue caps that mature into a soft grey. Known for their mild, nutty flavour and firm, slightly chewy texture, they add depth to a variety of dishes such as stir-fries, soups, and pastas.

These mushrooms are beginner-friendly and grow quickly in cool temperatures (10–21°C) and high humidity (85–90%). Easy to cultivate at home, they are an excellent choice for both new and experienced growers.

Blue Oyster Mushrooms can grow on a range of substrates, including straw, sawdust, prepared mushroom substrate, wood chips, coffee grounds, coir (coconut fibre), and cardboard.

Blue Oyster Mushrooms typically colonise their substrate in10 to 14 days, depending on temperature and conditions. After colonisation, they usually begin fruiting within 7 to 10 days. With the right environment, you can expect your first harvest in as little as 3 to 4 weeks from inoculation.