Out-Grow's 3 lb Hydrated and Sterilized Popcorn Mushroom Substrate is the perfect medium for robust mycelium growth. Our expertly prepared substrate comes in a durable mushroom grow bag, equipped with a self-healing injection port and a 5-micron filter patch to facilitate optimal gas exchange. Popcorn is known for its quick colonization, making it an excellent choice for mushroom spawn.

To use, simply inoculate the bag with 10-12 cc of your chosen inoculant and mix well. The substrate is best utilized fresh, ensuring the fastest and most vigorous growth. However, if immediate use isn't possible, the bag can be stored in its original packaging in a cool, dry place for up to one month. This ensures your substrate remains viable until you're ready to begin cultivation.

Experience the convenience and efficiency of our popcorn mushroom substrate, designed to help you achieve successful mushroom cultivation with minimal effort. Perfect for both novice growers and experienced mycologists, this substrate is your go-to solution for healthy and prolific mycelium development.