northrup king garden seeds Organic King Trumpet Mushroom Grain Spawn I North Spore

Our USDA-certified organic king trumpet (Pleurotus eryngii) grain spawn features a strain that produces large flushes of meaty and delicious mushrooms that are earthy, aromatic, and savory. Raw king trumpets, though dense and spongy in texture, lack aroma and flavor. But when cooked, they come to life with a soft crunchy texture and a mild savory umami flavor reminiscent of abalone.

Unlike other oyster varieties, king trumpets can be more difficult because they prefer cooler temperatures and are prone to drying out or stopping their growth if humidity is not maintained in the early stages. Additionally, King trumpets do not reliably produce second flushes, but may if temperature and humidity conditions are well controlled. Therefore, they are recommended for more advanced growers.

Recommended use:

• King trumpet grain spawn can be used for indoor production using sawdust-based sterile substrate.
• Do not use grain spawn for log inoculation.
• This is not a mushroom grow kit. King trumpet grain spawn must be combined with a substrate in order to fruit.

Upon receiving your spawn:

Remove it from the shipping box as soon as possible. Then, unfold the top of the bag, making room for air space. It's also important to check and confirm that the filter patch is not obstructed. This will help the organism breathe and continue to thrive!

Scroll down for specifications, growing, and storage guides.