Available in 3 & 5 LBS
Regular price
$30.95
Weight
Achieve dependable and high-yield mushroom cultivation with Mycelium’s sterile rye berries grain spawn bags, available in 3 lb and 5 lb sizes. Rye berries are widely regarded as the top choice for grain spawn due to their firm texture, excellent moisture retention, and nutrient-dense composition. These characteristics foster even mycelial growth, reduce the risk of clumping, and create a stable environment for vigorous colonization. Each bag is pre-sterilized, fitted with a self-healing injection port, and equipped with a 0.2-micron filter patch for optimal gas exchange and contamination control. Whether you’re growing Lion’s Mane, Shiitake, or Reishi, these bags are ready for seamless inoculation and reliable results. (Liquid culture sold separately.)
Why you'll love it
Industry-Preferred Grain Spawn
Rye berries have long been the go-to grain for mushroom cultivators due to their ideal size, structure, and ability to retain moisture while promoting even colonization.
Nutrient-Dense & Long-Lasting
Rich in slow-release carbohydrates, protein, and essential minerals, rye berries support robust mycelial growth and extended fruiting potential.
Sterile & User-Friendly
Fully sterilized and fitted with a self-healing injection port, these bags are simple to inoculate and great for both beginners and experienced growers.
Contamination-Resistant Design
The 0.2-micron filter patch ensures proper gas exchange while shielding the substrate from airborne contaminants, creating optimal growth conditions.
Sized for Any Setup
Choose between 3 lb and 5 lb options to suit your specific grow—whether it’s a small personal project or a scaled-up cultivation run.
Regular price
$30.95
Weight
Achieve dependable and high-yield mushroom cultivation with Mycelium’s sterile rye berries grain spawn bags, available in 3 lb and 5 lb sizes. Rye berries are widely regarded as the top choice for grain spawn due to their firm texture, excellent moisture retention, and nutrient-dense composition. These characteristics foster even mycelial growth, reduce the risk of clumping, and create a stable environment for vigorous colonization. Each bag is pre-sterilized, fitted with a self-healing injection port, and equipped with a 0.2-micron filter patch for optimal gas exchange and contamination control. Whether you’re growing Lion’s Mane, Shiitake, or Reishi, these bags are ready for seamless inoculation and reliable results. (Liquid culture sold separately.)
Why you'll love it
Industry-Preferred Grain Spawn
Rye berries have long been the go-to grain for mushroom cultivators due to their ideal size, structure, and ability to retain moisture while promoting even colonization.
Nutrient-Dense & Long-Lasting
Rich in slow-release carbohydrates, protein, and essential minerals, rye berries support robust mycelial growth and extended fruiting potential.
Sterile & User-Friendly
Fully sterilized and fitted with a self-healing injection port, these bags are simple to inoculate and great for both beginners and experienced growers.
Contamination-Resistant Design
The 0.2-micron filter patch ensures proper gas exchange while shielding the substrate from airborne contaminants, creating optimal growth conditions.
Sized for Any Setup
Choose between 3 lb and 5 lb options to suit your specific grow—whether it’s a small personal project or a scaled-up cultivation run.
Product details & instructions
Ingredients
Storage
Instructions
Product FAQs
Fungi our formula was made for
A curated lineup of premium species that thrive on this hardwood substrate blend
Lion's Mane
Lion's Mane
Known for boosting focus and mental clarity, Lion’s Mane also brings rich flavor and a tender, seafood-like texture to dishes. It’s a high-performing strain that grows quickly with reliable yields.
Shiitake
Shiitake
Shiitake mushrooms offer a bold, savory flavor and buttery, umami-rich texture—plus natural immune support. This reliable strain produces generous flushes, perfect for beginners.
Reishi Varieties
Reishi Varieties
Reishi mushrooms are valued for their immune-supporting compounds and glossy, antler-like or fan-shaped growth—popular for at-home wellness routines and easy indoor growth.
Oyster Varieties
Oyster Varieties
Known for their vibrant colors and quick growth, oyster mushrooms offer a delicate, savory taste and are ideal for both gourmet dishes and beginner-friendly grows.
Maitake
Maitake
Maitake mushrooms form large, frond-like clusters with deep, savory flavor. Rich in immune-supporting and antioxidant compounds, they’re ideal for cooking, drying, or extracts.
Golden Enoki
Golden Enoki
Golden Enoki mushrooms are delicate with long stems and small caps, offering a mild, slightly fruity flavor. Ideal for soups and garnishes, they grow best in cool, humid conditions.
Complete your grow