4 LB. Culinary Colonized Bulk Grain Spawn

Fully Colonized Mushroom Grain Spawn - 4 lb.

Kickstart your mushroom cultivation with professional-grade Merry Mushroom Maidens Colonized Grain Spawn. This is the critical "starting engine" for your mushroom project, featuring high-quality grain that has been completely overtaken by healthy, vibrant white mycelium.

Why Choose Our Grain Spawn?

• Ready to Use: Our grain spawn arrives fully colonized and "white out," meaning the mycelium has completely bonded with the grain. Ready to mix into your bulk substrate immediately upon arrival.
• Professionally Sterilized: Produced in our Missouri facility using top-of-the-line sterilization equipment, ensuring your grain is free from contaminants and your mushrooms get the cleanest possible start.
• Locally Sourced & Organic: We use organic grains sourced right here in the Midwest, supporting local agriculture while providing you with a premium product.
• Vigorous Genetics: We use only the most robust mushroom strains, selected for their speed of growth and high yield potential.
• Guaranteed Quality: Every bag is inspected for purity and vitality before it leaves our facility.
• Very Easy to Use: Simply break up the colonized grain within the bag and mix it into your sterilized substrate (like our 4 lb. CVG). Designed for growers of all levels.

What is Grain Spawn?

Think of grain spawn as the "seed" for your mushroom garden. While mushrooms don't grow from traditional seeds, the mycelium uses the grain as a food source and a vehicle to travel. Once you mix this spawn into a larger container of substrate, the mycelium will spread and eventually produce the mushrooms you harvest.

Handling and Best Practices

• Use Immediately: For best results, use your grain spawn as soon as it arrives.
• Cleanliness is Key: Always mix in a clean, draft-free environment and use 70% isopropyl alcohol to sanitize your hands and the outside of the bag before opening.
• Storage: If you cannot use it immediately, store the unopened bag in a cool, dark place or refrigerator to keep the mycelium dormant. Good for up to 2 months refrigerated.

Available varieties: Lion's Mane, Blue Oyster, Blue Nevada Oyster, Pink Oyster, Snowy White Oyster, Pioppino, King Trumpet, Black Pearl King Trumpet, and Chestnut. Our premium colonized grains are sent in our protective shipper box.