CVG Substrate & Millet Grain Bundle

$47.99
Weight

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Take the guesswork out of bulk mushroom cultivation with our Mycelium Monotub Mushroom Grow Kits—available in 3 sizes to match your grow goals. Each kit includes one bag of CVG substrate and one bag of sterilized millet grain spawn, both pre-hydrated and ready to use. Designed for monotubs or grow bags, this two-part system delivers strong colonization, clean growth, and flush-ready performance for dung-loving mushroom strains.

Product details & instructions

Why You'll Love It

Sized for Any Grow Setup
Available in 6LB, 9LB, and 15LB total weight kits to match your project scale. Choose the size that fits your monotub or grow bag and get started with a simple, scalable solution.

Complete Two-Bag System
Each kit includes one bag of fully sterilized CVG substrate and one bag of millet grain spawn. Both are pre-hydrated, pre-measured, and designed to work together for fast colonization and consistent flushes.

Clean Inoculation & Safe Airflow
The grain bag comes with a self-healing injection port for easy liquid culture application, while both bags include 0.2-micron filter patches for proper gas exchange and contamination resistance.

Formulated for Dung-Loving Mushrooms
Designed for strains that thrive in nutrient-rich substrates like Pioppino, Wine Cap, Portabello, and Crimini. The CVG and millet combo delivers the nutrition and structure needed for vigorous growth.

Made by Mycologists in California
Handcrafted in small batches using organic ingredients and sterilized in an ISO-7 cleanroom. Developed by professional mycologists for growers who expect clean, reliable results.

Instructions

- Growing Mushrooms in a Monotub - View Here

- Creating Grain Spawn - View Here

Safety Information 

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.

Product Faqs

Q: How long does it take for mushrooms to grow in a monotub?

A: The time frame can vary depending on the mushroom species, but most mushrooms take 2–4 weeks for colonization and another 1–2 weeks for fruiting after exposure to light and air.

Q: Can beginners successfully grow mushrooms with this kit?

A: Absolutely! Our kit simplifies the cultivation process, making it accessible and rewarding for first-time growers.

Q: What kind of yield can I expect from the kit?

A: While yields depend on environmental conditions, our optimized substrate and quality liquid culture are designed to support a generous harvest of mushrooms.

Q: How does Mycelium promote sustainable mushroom cultivation?

A: We prioritize the use of organic and renewable materials in our substrates and packaging, advocating for cultivation practices that are kind to both our customers and the environment.

How to Use Your CVG Substrate & Grain Spawn Bundle

Inoculate your grain spawn bag with liquid culture

Inoculate your grain spawn bag with liquid culture

Using a sterile syringe, inject your favorite mushroom liquid culture into a grain bag. Allow the grain to fully colonize in a clean environment. For best results, we recommend using 1 lb of colonized grain spawn for every 2 lbs of CVG substrate.

Shop Grain Spawn
Mix CVG with fully colonized grain spawn

Mix CVG with fully colonized grain spawn

Break up your fully colonized grain and mix with your CVG substrate. Spread evenly in your monotub or grow bag. Maintain airflow and humidity, misting daily as needed. With proper conditions, pins will appear—leading to a healthy flush of mushrooms ready for harvest.

Shop Liquid Culture

Inoculation made easy

Quickly master inoculation using a liquid culture syringe. Simply sterilize the injection port, inject your culture, and let nature do the rest.

Shop syringes

Meet the dung lovers

Not sure what to grow? These fungi love our CVG substrate blends

Pioppino

Pioppino

Pioppino mushrooms produce large flushes of elegant clusters, with long stems and velvety brown caps. A favorite among chefs and growers for their earthy, nutty flavor.

Button

Button

The world’s most widely cultivated mushroom, Buttons are mild, compact, and easy to grow. They thrive in dung-loving substrates and are perfect for grilling or hearty dishes.

Crimini

Crimini

A more mature version of the classic Button, Criminis grow well in nutrient-rich compost and hold up beautifully in cooked dishes—perfect for sautéing, stuffing, or roasting.

Portobello

Portobello

Portobellos are fully mature Criminis, known for their large caps and meaty bite. They grow best in dung-loving substrates and are perfect for grilling or hearty dishes.

Wine Cap

Wine Cap

Wine Cap is a fast colonizer with consistent, reliable yields. Its mild, earthy taste—often compared to artichokes or roasted potatoes—makes it a standout in both the garden and the kitchen.

Our Brand Story

Welcome to Mycelium life, where passion for mushrooms meets innovation in agriculture. We connect people, nature, and sustainability by fostering ecosystems for wildlife and fungi through our organic animal feeds and all-in-one offerings for mushroom producers. From grains and substrates to genetics and lab equipment, we provide everything needed to cultivate with confidence. Join us in pioneering sustainable solutions for a healthier planet!

Mycelium Life

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