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Ready to get your mushroom grow on?

This is a 10-pound bag of handmade, pasteurized mushroom super substrate.

It's a coco coir and vermiculite base, mixed to the perfect field capacity—meaning it's already hydrated and ready for you to add your spawn.

No need to mix and pasteurize yourself; just open the bag and inoculate.

It's made in the USA and comes in its original packaging.

Whether you're a beginner or an experienced cultivator, this substrate takes the guesswork out of the process.



4 out of 5