Organic Chestnut Mushroom Grain Spawn

Our USDA-certified organic chestnut (Pholiota adiposa) grain spawn features a popular strain widely cultivated in Japan. Mushrooms are velvety with small-to-medium, delightfully speckled caps resembling the color of their namesake nut. When cooked, they have a woodsy aroma, a crunchy texture, and a rich, nutty, mildly-sweet flavor.

Chestnuts can be a bit finicky, but generally grow well indoors. They prefer cooler temperatures and are prone to drying out or stopping their growth if humidity is not maintained when the mushrooms are still in their early stages. However, when they grow successfully you can expect significant and commercially-viable harvests. Note that chestnuts do not reliably produce subsequent flushes.

Recommended use:

• Chestnut 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. Chestnut 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.