GUS is a modular ceramic planter with specialized, patent-pending features for growing mushrooms.  Multiple GUS can be stacked to create a vertical mushroom farm while taking up minimal countertop space. The base model of GUS comes with the vessel that features a circular hole for the mushrooms to grow from and a standard solid lid. The base model of GUS is suitable for side fruiting mushrooms such as certain oyster varieties. We recommend growing the following mushrooms for side fruiting in GUS:  Pink oyster, golden oyster, and blue oyster. Additional grow-lids and humidity domes will be released as GUS accessories later this year which are designed for top-fruiting varieties. 

PROCESSING TIMES: Please allow 3-5 business days for processing before your order ships.

IMPORTANT: Mushroom fruiting blocks are sold separately. We recommend using fruiting blocks available through our mushroom farm partner, North Spore. When you purchase a GUS from Good Growing you will receive a fruiting block discount code to shop on North Spore valid until 12/31/2024.  Be sure to order the fruiting blocks and not the spray-and-grow kits. You can shop the North Spore fruiting block kits here.  We recommend starting with golden oyster mushrooms for first-time growers. Pink oyster mushrooms and blue oyster mushrooms are also fantastic for beginners. If your home environment runs cold (below 67° F) you may also consider growing Snow Oyster mushrooms which thrive in cooler temps. GUS is not suitable for growing shiitake mushrooms.