Shiitake Bulk Mushroom Substrate 6 lb.

Shiitake Mushroom Bulk Substrate Block (6 lb.) Premium Ready-to-Use Foundation for Growing Gourmet Shiitake at Home

Elevate your mushroom cultivation with our professional-grade Shiitake Bulk Substrate Block. Crafted specifically for shiitake success, this nutrient-optimized block is the ideal base for producing large, meaty mushroom caps with that signature deep, earthy, umami-rich flavor—perfect for stir-fries, soups, sautés, risottos, and beyond.

Designed for home growers, mycologists, or anyone passionate about fungi, this extra-large 6 lb. block delivers superior results with multiple productive flushes when handled properly.

Why the "Merry Mushroom Maidens" Bulk Substrate is Different:

• The 6 lb. Advantage: Bigger than typical retail options, our professional-grade block offers more growing medium for larger yields and extended production (often 2 flushes with good care).
• The Oak + Wheat Bran Formula: We use a proven 80% oak sawdust + 20% wheat bran blend. This classic ratio provides balanced nutrition with a higher carbon-to-nitrogen profile that's especially favored by shiitake for vigorous mycelium colonization, robust fruiting, and high-quality mushrooms—mimicking their natural hardwood habitat while boosting peak performance.
• Locally Sourced & Handcrafted: Every block is handmade at our facility in Missouri, using 100% organic materials sourced directly from the hardwood forests of the Ozark Mountains and Midwest (premium oak) and quality wheat bran.
• Versatile & Reliable: Sterilized and ready for inoculation with your shiitake grain spawn. 

A Nutritional Powerhouse (When Harvested) Shiitake mushrooms grown on this substrate become true functional superfoods:

• Immune Support: Naturally high in antioxidants, beta-glucans, and immune-boosting compounds.
• Heart Healthy: Contains compounds known to help maintain healthy cholesterol levels and support cardiovascular health.
• Plant-Based Protein: A fantastic source of B-vitamins (like niacin and pantothenic acid), copper, fiber, potassium, and clean protein.

Product Specifications & Care

• Weight: 6 lbs (Professional Size Bulk Block)
• Storage: 2–3 months shelf life when stored in a dark, cool, and clean location. 
  

Ready to spawn or fruit your block? Store properly until use, and prepare for homegrown shiitake that's fresher and more flavorful than anything store-bought!