About Our Substrates

About Our Substrates

Quality of Materials

At Mushroom Substrate, we pride ourselves on the quality of our materials, all of which are sustainably sourced. Our grain-based substrates, including rye berries, popcorn, white milo, red milo, oats, and our multi-grain blend, are sourced from local Amish Mennonite farms. These farms use natural farming methods, such as fish-based fertilizers and non-chemical weed control, to ensure the purity and sustainability of our grains.

Our substrates are available in various sizes and forms, including sterilized grain bags with self-healing injection ports, pasteurized manure-based mixes, wood-based substrates, and pasteurized straw. Every product is fully prepared and ready to use upon arrival, ensuring a smooth and effective growing process.

Preparation Process

The preparation of our substrates is where our experience truly shines. All grains are soaked, simmered, surface-dried, and then sterilized in mushroom grow bags at 17 PSI for three hours. This meticulous process ensures that the substrates are fully hydrated and free of contaminants, setting the stage for successful cultivation.

For our non-grain substrates, each mix is carefully prepared by hand, ensuring consistency and quality in every batch. Our large-scale facility, equipped with over 1,000,000 BTUs, allows us to maintain the highest standards of preparation using steam-jacketed kettles that provide even cooking and reduce the risk of burst grains. Our recipes have been refined over 15 years of experience, ensuring they are perfectly tuned for optimal mushroom growth.

Why Choose Our Substrates?

While many substrates on the market might seem similar, our products stand out due to their variety, preparation, and proven success. Our customers have consistently reported larger crops and more flushes, making our substrates a reliable choice for both amateur and experienced growers.

Although we are building this new website, Mushroom Substrate, to focus solely on substrates, our reputation is well established in the industry through our parent site, Out Grow. With over 15 years of expertise, we’re committed to providing the best substrates available.

Explore More

To learn more about the specific benefits of different substrates and how to use them effectively, check out our detailed blog posts:

Our Commitment to Sustainability

We believe in supporting sustainable practices in mushroom cultivation. By sourcing our grains from local, naturally-managed farms, and employing eco-friendly preparation methods, we’re doing our part to ensure that our products are not only effective but also responsible.

Experience You Can Trust

With over 15 years of experience in the mushroom substrate industry, we’ve refined our processes and products to meet the highest standards. Whether you’re a home grower or a commercial producer, you can rely on Mushroom Substrate to deliver the quality and consistency you need to succeed.

Ready to Get Started?

Explore our full range of substrates and see why Mushroom Substrate is the top choice for growers everywhere. Whether you're just starting or looking to optimize your grows, we have the right substrate for you.