Introducing the MycoGlobe Collar – the perfect mini grow chamber designed to fit wide-mouth mason jars for at-home mushroom cultivation. This innovative product features adjustable gas exchange holes, allowing you to create an ideal environment for your mushrooms to thrive. With the MycoGlobe Collar, you'll be introduced to the fascinating mushroom life cycle, enabling you to grow gourmet or medicinal mushrooms with ease. Spraying the top of the substrate mimics natural rainfall, supporting healthy fruiting and giving beginners a hands-on experience to grow the mushrooms they love!