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Regular price $79.00 USD
Regular price Sale price $79.00 USD
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If you've completed two full mushroom cultivations with your CULTIV8R KIT and you're just about ready to transfer the third (and final) bag of colonized grain over to substrate, then it's time to keep the process going – and keep the mushrooms growing – with a CULTIV8R KIT refill.

Each CULTIV8R KIT refill contains three bags of sterilized grain, three sets of tub liners, three sets of individually packaged substrate mix materials (i.e.: coco coir, vermiculite, and pH balancing nutrients), gloves, masks, alcohol wipes, and stickers.  Fruiting tubs, lights, our CULTIV8R Guidebook, and spores are NOT included with the kit refill.


• Each kit refill arrives with three sterilized grain bags, and enough substrate (i.e.: mushroom soil) for three full cultivations.

• Go from spore inoculation to mushroom harvest in ten to twelve weeks.

• With proper technique, each kit will produce at least 30 grams of dried mushroom material per cultivation.

• Cultivation tubs and guidebook are not included with kit refills.


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  • Free Shipping

    We send out all our CULTIV8R products – the kits and the kit refills – via U.S.P.S. Priority Mail. And we do this for free, so there are no extra or hidden costs with your order.

  • Hassle-Free Exchanges

    If parts are missing from your CULTIV8R KIT, or something was damaged while in transit, please reach out to us as soon as possible. We'll make sure you have that missing part – or a replacement – as soon as possible.