Your mushroom grow bag can be stored for up to 4 weeks or until you see mushrooms beginning to grow in the bag. Store them at room temperature away from direct sunlight. No refrigeration is necessary.

Note: Shiitake blocks can only be stored until the block turns dark brown, at which time they must be used.

Grain spawn will store for three months in a refrigerator. The fresher the better, but mycelium is pretty resilient. If you don’t get around to inoculating right away, tuck it away in your refrigerator until you’re ready. NOTE: Pink oyster cannot be refrigerated and is best used within 5 days of receipt.

Only open your spawn bag when you are ready to use it. Opening it prematurely will increase the risk of it molding.

It is not ideal to use spawn for more than one inoculation day.

Plate cultures can be stored in the refrigerator for up to 6 months. If your culture has been stored for longer than 4 months, we recommend checking the viability of the culture before use.

Liquid cultures can be stored in the refrigerator for up to 2 months.

Slant cultures can be stored long term in cryostorage, or up to a year in the refrigerator.

NOTE: Pink oyster cultures cannot be refrigerated. Store these cultures at room temperature and use within 5 days of receipt.

Store your unused dishes upside down in the refrigerator, and your slants upright in the refrigerator. It’s best to keep them in their original container to prevent contamination. In the absence of a refrigerator, store them in a cold room.

Check for condensation from time to time. Condensation in the plates means there is a heat source driving out water from the agar, which will dry it out quickly. Let your plates equilibrate to room temperature before use.

Store dried mushrooms in an air tight bag, jar or plastic container in a cool, dark place for up to a year. Dried mushrooms can be frozen to extend their shelf life.