TopSeller 50Pcs Mushroom Grow Bags - 6 Mil Thick Autoclavable Spawn Bags with 0.2 Micron Filter Patch, Large 8"x5"x20" Polypropylene Myco Bags for Mushroom Cultivation & Substrate (6 Mil)

Prepare for a Bountiful Spring Harvest As the planting season approaches, ensure your mycology lab is stocked with the most reliable equipment. Our 50-pack of Mushroom Grow Bags is designed to solve the biggest frustration in cultivation: burst bags. By upgrading to a 6 Mil thickness, we deliver a bag that is twice as strong as the industry average, giving you peace of mind during the sterilization process. Why Choose Our Spawn Bags? Laboratory Grade Sterility: The integrated 0.2-micron filter patch is a game-changer. It creates a breathable barrier that keeps your grain spawn or sawdust substrate free from airborne contaminants while allowing your mycelium to breathe and thrive. Built for Heat: Constructed from high-quality Polypropylene (PP), these bags are fully autoclavable. They can withstand the rigorous temperatures of pressure cooking, making them perfect for preparing sterile grain spawn at home or in a commercial setting. Space-Efficient Design: The gusseted sides allow the bag to stand firmly once filled, optimizing space on your incubation shelves. The crystal-clear material offers excellent visibility to track growth progress daily. Product Specifications: Quantity: 50 Pcs Dimensions: 8" (W) x 5" (D) x 20" (H) Thickness: 6 Mil (Heavy Duty) Filter Type: 0.2 Micron Gas Exchange Patch Material: Autoclavable Polypropylene Application: Grain Spawn, Bulk Substrate, Fruiting Blocks Important Note for Growers: These are empty sterilization bags intended for DIY cultivation. They do not contain substrate, spawn, or spores. Pair these with your preferred grain (rye, millet, corn) to start your own professional mushroom growing kit today!

• [Ultra-Thick 6 Mil Durability] Unlike standard 3 mil bags that tear easily, our mushroom grow bags are engineered with extra-thick 6 mil polypropylene. These heavy-duty spawn bags are tear-resistant and withstand high pressure, ensuring your substrate stays secure without bursting during preparation or sterilization.
• [Professional 0.2 Micron Filter Patch] Master the art of contamination-free cultivation. Each bag features a premium 0.2 micron filter patch that allows essential gas exchange (fresh air in, CO2 out) while effectively blocking contaminants and bacteria. Perfect for creating a sterile environment for mycelium colonization.
• [Autoclavable & High-Temp Resistant] Designed for serious mycology enthusiasts. These autoclavable bags remain pliable and strong even after sterilization. Safe for use in pressure cookers and autoclaves, they are the ideal vessel for sterilizing grain, straw, sawdust, and other mushroom substrates without melting or becoming brittle.
• [Spacious 8"x5"x20" Capacity] Maximize your yield with our gusseted design. The 5-inch side gussets allow the growing bags to expand and stand upright, holding 3-5 lbs of material comfortably. This clear design makes it easy to monitor mycelial growth and spot contamination early, essential for magic (high-yield) results.
• [Versatile Cultivation Tool] Whether you are growing Shiitake, Oysters, or Lion's Mane, these myco bags are the industry standard for both spawn production and fruiting. A must-have addition to your mushroom grow kit supplies for both home hobbyists and professional laboratory use. Note: Bags are sold empty; substrate/spawn not included.