12# Sterile Masters Mix Mushroom Growing Substrate

We are proud to offer you our mushroom substrates. Our 12 pound 50/50 Oak and Soy Hulls mix substrate sterilized in our autoclave at 17 PSI for 4 hours.

*In stock items usually ship within 2-3 business days, in rare cases, due to demand, and our production process there may be up to a 2-3 week lead time. Please email us at [email protected] to confirm availability for your projects.
*Once this product has been inoculated with your culture, we are not responsible for any contamination experienced. If sterile spawn shows up damaged or contaminated before you can work with it, we will gladly replace free of charge.