Out-Grow's 5 lb Hydrated and Sterilized Popcorn Mushroom Substrate is the ideal medium for vigorous mycelium growth. Packaged in a robust mushroom grow bag, it features a self-healing injection port and a 5-micron filter patch to ensure optimal gas exchange. Popcorn's quick colonization properties make it an excellent choice for mushroom spawn, providing a reliable and efficient substrate for cultivation.

To use, simply inoculate the bag with 10-12 cc of your chosen inoculant. This substrate is best used fresh, guaranteeing the fastest and most vigorous growth. However, if immediate use is not feasible, the bag can be stored in its original packaging in a cool, dry place for up to one month. This ensures the substrate remains viable until you're ready to start your cultivation process.

Designed for both novice growers and experienced mycologists, our 5 lb popcorn mushroom substrate offers convenience, efficiency, and exceptional results. Trust Out-Grow to provide the best substrate for your mushroom cultivation needs.