As outlined in our substrate compatibility guide, garden beds can be supplemented with various agricultural byproducts such as coffee grounds, grass clippings, leaf waste, straw, corn cobs, sawdust, banana leaves, cotton seed hulls, newspaper, and cardboard. Outdoors, blue oysters can be grown on logs, totems, and stumps inoculated with plug spawn or sawdust spawn using a variety of tree species including maple, oak and cherry.īlue oyster mushrooms can also be grown in more traditional garden beds or containers inoculated with grain or sawdust spawn. Keep in mind that this species is sensitive to high CO2 levels and will require a fresh air exchange system if grown indoors. We offer a complete monotub walk-through video here. For indoor cultivation we recommend growing blue oysters from an Organic Blue Oyster ‘Spray & Grow’ Mushroom Growing Kit or from an Organic Blue Oyster Mushroom Grow Kit Fruiting Block in a fruiting chamber such as our ‘BoomRoom’ Automated Mushroom Martha Tent Grow Kit or in a monotub using a substrate mixture containing sterile manure and hardwood sawdust. Stem length is dependent on substrate, as those growing from the top of a log or from a garden bed have more well-developed stems up to 3 inches tall, compared to those growing from the side of a tree or substrate block, which can lack stems altogether.ĭifficulty for Outdoor Cultivation: Beginnerīlue oysters are versatile and can be grown in a number of ways indoors and out. Gills are slender, white and decurrent, meaning they are attached to the stem and run most of the way down it. That being said, they are often fan or oyster-shaped with smooth, flat or slightly indented caps that are typically 2-10 inches across with wavy edges. Their scientific name, deriving from the Greek “pleura” meaning ‘side’ and “ot” meaning ‘ear’ suggesting it appears like a “side ear” growing from a tree, with “ostreatus” being Latin for “like an oyster shell.” Fruiting bodies can vary in shape and size depending on growing conditions like humidity, CO2 and sunlight. Blue oyster mushrooms grow in large, shelf-like structures made up of dense, overlapping clusters of individual fungi that vary in color from steely blue in cultivated varieties to brown and white in wild specimens.
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