Premium Substrate for Consistent Growth & Yields
This 6LB Masters Mix features a balanced combination of oak hardwood and soy hulls, offering rich nutrition and ideal structure for healthy, vigorous mushroom growth. 

Pre-Sterilized for Hassle-Free Use
Pre-Sterilized for Hassle-Free Use: Each bag is fully sterilized and hydrated to create a clean, contamination-resistant environment. Just inoculate with colonized grain spawn—no prep, pasteurization, or additional sterilization needed. 

Made for Wood-Loving Mushroom Varieties
Formulated for gourmet and functional species that thrive on hardwood substrates—ideal for growing Lion’s Mane, Shiitake, Reishi, Oyster mushrooms, and more. 

Supports Multiple Flushes
The extra volume supports deeper substrate beds and multiple harvests, helping you get more out of every grow cycle with consistent yields and resilient mycelium. 

Monotub or Bag Tek Ready
The 6LB size is great for mid-to-large monotub grows or multiple in-bag setups. Bag cultivation retains humidity, contains spores, and simplifies environmental control for greater success.  

- 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 oak 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.