Mojo Pro-Gro Elm Oyster Mushroom Grow KitThe Pro Gro Elm Oyster (Pleurotus ulmarius) grow kit is the easiest of all oysters to cultivate. It is ideal for beginners and kid friendly. This kit is made up of a strong producing commercial elm oyster strain. It can produce large clusters of shelve like oyster mushrooms that are a culinary treat. Oyster mushrooms are also a great companion plant to your brassica plants in the garden. It has shown to help kale, cabbage, broccoli, and others in the