Wood-Loving Mushroom Substrate & Master's Mix – Midwest Grow Kits

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Wood Based Substrate

(2 products)

Wood-loving mushrooms — lion's mane, shiitake, oyster, king trumpet, reishi and other gourmet species — can't colonize the CVG and manure blends most cultivated mushrooms grow on. They evolved to break down trees, so they need a lignin- and cellulose-rich hardwood substrate to fruit well. That's what this collection is built for. Our sterilized Master's Mix — a 50/50 blend of hardwood sawdust and soybean hulls — is the gold-standard fruiting substrate for wood-lovers, sterilized rather than just pasteurized in our 1200L Blue Myco autoclave so its rich nutrient load stays contamination-free until you inoculate. Prefer to skip the spawn-and-mix step? The all-in-one Wood Lover's grow bag below arrives ready to inject. Growing manure-loving species instead? Head to manure-based substrate or the full substrate hub.

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Choosing a wood-based substrate

There are two ways to grow wood-lovers in this collection — pick based on how much of the process you want to handle yourself.

Sterilized Master's Mix — most control, highest yields

A 50/50 blend of hardwood sawdust and soybean hulls, sterilized at 250°F for 3.5 hours. This is the fruiting substrate for growers who already have colonized grain spawn (or want to spawn to bulk) and want the biggest flushes. Inoculate with grain spawn or a wood-loving liquid culture, colonize, then fruit straight from the block.

All-in-One Wood Lover's Grow Bag — simplest path

Substrate, grain spawn, a self-healing injection port and a HEPA filter, all in one sealed bag. Inject a syringe, let it colonize, cut it open to fruit — no mixing, no separate spawn, no transfer step. The easiest way to grow a wood-loving species from scratch.

Match the substrate to your species. Wood-lovers need hardwood — they colonize CVG or manure blends poorly, if at all. If you're growing a manure-loving species by mistake on this substrate, it will struggle. When in doubt, check the species page before you buy.

What grows on wood-based substrate

Lion's mane, shiitake, all oyster varieties (blue, golden, pink, pearl, king), king trumpet, reishi, maitake, pioppino, chestnut and turkey tail. These are the gourmet and functional species that fruit from hardwood rather than dung-based substrates.

Frequently asked questions

What is Master's Mix?

Master's Mix is a 50/50 blend of hardwood sawdust and soybean hulls — the industry-standard supplemented fruiting substrate for wood-loving gourmet mushrooms. The sawdust provides the lignin and cellulose these species digest, while the soybean hulls add the nitrogen and nutrients that drive bigger yields.

Which mushrooms grow on wood-based substrate?

Wood-loving species: lion's mane, shiitake, oyster varieties, king trumpet, reishi, maitake, pioppino, chestnut and turkey tail. These won't fruit well on CVG or manure-based substrates, which are made for a different group of mushrooms.

Why is Master's Mix sterilized instead of pasteurized?

Its nutrient load is the reason. The soybean hulls that boost yields also feed contaminants, so a lower-temperature pasteurization isn't enough — supplemented substrates must be fully sterilized at 250°F to stay clean until you inoculate. Plain CVG can be pasteurized because it's far less nutrient-dense.

Can I use wood-based substrate for manure-loving mushrooms?

No. Manure-loving species need the CVG or manure-based blends in our other substrate collections. Putting them on hardwood substrate — or putting a wood-lover on CVG — is one of the most common reasons a grow underperforms. Match the substrate to the species.

Do I need a flow hood or still air box?

For the all-in-one bag, no — the self-healing injection port is designed for a clean room with basic sanitation. For opening a sterilized Master's Mix bag to add grain spawn, a still air box or flow hood is strongly recommended, since supplemented substrate is more contamination-sensitive once exposed to open air.

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