Premium Substrate for Consistent Growth & Yields
This 6LB blend of alder hardwood and soy hulls delivers balanced, long-lasting nutrition to support healthy colonization and vigorous flushes in hardwood-loving mushrooms. 

Powered by Mycelium Plus Cultivation Enhancer
Fortified with our proprietary Mycelium Plus blend—an advanced nutrient booster that accelerates colonization, strengthens mycelial structure, and improves flush success. 

Pre-Sterilized and Ready to Use
Each 6LB bag is fully sterilized and hydrated, creating a contamination-resistant environment. Simply mix with colonized grain spawn and you’re ready to grow—no prep or pasteurization required. 

Formulated for Gourmet & Functional Mushrooms
Optimized for species that prefer hardwood-based substrates, including Lion’s Mane, Shiitake, Reishi, and Oyster mushrooms—perfect for culinary or wellness-focused cultivation. 

Bag Grows Made Simple
Bag tek helps retain humidity, reduce mess, and contain spores—so you can focus on temperature control without managing airflow. Rehydrate between flushes for continued performance. 

- All-In-One Wood Lovers Step-By-Step Inoculation & Fruiting Monotub & Grow Tent Tek - View Here

 - All-In-One Wood Lovers Step-By-Step Inoculation & Fruiting Bag Tek Guide - View Here

To ensure the substrate remains uncontaminated, use clean, sterile tools and environments during handling. 

Follow detailed cultivation instructions specific to the mushroom species you are growing for optimal results.

Q: Can this substrate be used for multiple wood-loving mushroom varieties?

A: Yes, this substrate is ideal for a wide variety of wood-loving mushrooms like shiitake, lion's mane, and reishi. The blend of alder and soy hull provides the nutrients and structure that these fungi thrive on, promoting strong mycelial growth and healthy fruiting.

Q: How long does it take for mushrooms to colonize this substrate?

A: Colonization time can vary by mushroom species and growing conditions, but with our substrate’s balanced blend and moisture retention, you can typically expect full colonization in 2-4 weeks.

Q: How much grain spawn should I mix with my substrate bag?

A: For wood-loving varieties, we recommend using 1.5 lb of fully colonized grain spawn for every 6 lbs of substrate. This ratio supports optimal colonization and healthy growth.

Q: Does this Masters Mix substrate bag include an injection port?

A: No, this Masters Mix substrate bag does not include an injection port. It is designed for cultivators who prefer to inoculate using grain spawn, either by mixing it directly into the bag under sterile conditions or by transferring the substrate into a monotub or other bulk fruiting chamber. If you require a self-healing injection port for needle-based inoculation, please check out our grain spawn bags or all-in-one grow bags, which come equipped with injection ports for easy use.

Q: Can I grow directly in the bag, or do I need a monotub?

A: Both options work. Bag grows are convenient for humidity retention and mess containment. Monotubs allow for larger flushes and more surface area if you're scaling up your grow.