A hybrid of King and Blue oysters. They have the beautiful color of the Blue Oyster with the large, thick-stem of the king mushroom. Color ranges from deep blue to light gray depending on temperature. Includes 12ml liquid culture syringe + sterile needle Recommended use: Use the syringe to inoculate your own liquid culture media to expand the mycelium into many syringes worth. Storage: Can be left at room temperature for up to 6 months, and refrigerated for longer than 1 year.