Grain Substrate

Unlock the potential of your mushrooms with our high-quality grain substrates. Nourish your fungi and watch them flourish! Up to 30% discount for multiple items.

Bulk Fruiting Substrate

Cultivate a bountiful harvest of fruits with our high-quality bulk fruiting substrates like the renowned Masters Mix. Start growing today! Up to 30% discount for multiple items.

All Products In Grain & Bulk Fruiting

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Customers are saying

Quality Grain and Bulk Fruiting Substrates - The Foundation of Every Flush.

Whether you are embarking on the journey of preparing sterile grain spawn or skillfully mixing your own bulk fruiting blocks, it's essential to remember that the quality of your raw materials plays a crucial role in determining both the speed and health of your grow.

That’s why we are proud to introduce our exclusive Grain & Substrates collection, crafted with the exact same high-quality ingredients that we utilize at Kai Kai Farm. From our carefully selected high-hydration grains to our premium hardwood amendments, you can trust that these professional-grade inputs will empower you in transforming mycelium into bountiful mushrooms. Elevate your growing experience and enjoy the fruits of your labor with our dependable, top-notch products!