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Pacific Substrates

Goonie Grains™ Sterilized Grain

Goonie Grains™ Sterilized Grain

Regular price $19.95 USD
Regular price Sale price $19.95 USD
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Sterilized Grain for Growing Mushrooms. Whole Oats, Milo, Injection Port, 0.2 µm Filter.

Goonie Grains™ production ready grain spawn mix will help you grow and expand thriving mycelium. This oat and sorghum blend maximizes inoculation points, is ideal for mushroom cultivation, and is intended for intermediate to experienced growers.

Net Contents: 3 L (3.2 QT)

Ingredients: Whole oats, milo, gypsum, lime

Grow Bag: XLS-T, 0.2 µm filter, injection port


This product is intended for use with Pacific Substrates Paddy Poo™ at a 1:2 spawn to substrate ratio. Whether you're spawning to tubs, bags, or beds, Goonie Grains™ is the ideal grain spawn for specialty mushroom cultivation.

Money Back Guarantee: Pacific Substrates offers a 6 month money back guarantee on all sterilized products.


Growing instructions video linked here.

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Cultures and spores sold separately, contact for affiliate referral.

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Free Shipping Disclaimer: Free shipping applies only to orders over $50 containing any combination of the following items: Paddy Poo Sterilized Substrate, Goonie Grains Sterilized Grain, Ready Set Grow Kit. Adding any non-eligible item to your cart will void the free shipping offer.