Oyster mushrooms are incredibly fast-growing when compared to other mushroom species and competing organisms. They can also grow on a variety of substrates making them a flexible and beginner-friendly mushroom to work with. The growing process goes through several stages which generally sees the first flush within 3-4 weeks from inoculation. Pink Oyster Mushrooms may grow even quicker than this, with mushrooms fruiting between 2-3 weeks. See our complete guide to growing oyster mushrooms for more information.