Uses For Spent Shiitake Logs

Out with the old and in with the new. What do you do with old mushroom logs?

Spent mushroom logs make great garden bed borders. Used correctly, they can keep weeds out and good soil in. Old logs can hold moisture and nutrients for the soil over a long period of time.

Depending upon what kind of wood was used, Shiitake logs can continue to produce mushrooms for up to five years. Once the mushrooms have used most of the log’s nutrients available to them, the log feels light and soft. Other second level decomposers can begin to move in along with the termites and beetles.

It is a good idea to remove these infested (biodiverse) logs from the area. But what to do with them?

Some shiitake operations further north heat their greenhouses at night with woodfire stoves burning old, spent mushroom logs.

Usually, Arkansas winters are not so cold. Though this year, we almost ran out of firewood at the wrong time. I would’ve had to burn a few shiitake logs if my wife, Jenny, had not saved the day.

This year marks the fifth year since we’ve started inoculating our own mushroom logs every February. I was more focused on planting a garden than inoculating mushroom logs. Natural weed barriers are needed in my yard. Bermuda grass. Enough said. Maybe some old logs would do to keep the weeds out and my soil in.

I had lots of logs to choose from . Wanting to keep the newer logs clean, I selected lighter logs with the bark falling off.

These old logs are the perfect backyard resource to shape up one side of my little garden beds. Hopefully the wood will provide enough support to keep the soil from washing away. The spring rains will test this.

In my head, a few weeks down the road, we’ve got radishes and lettuce leafing out over these logs, flushing out a final mushroom or two. I hope the remaining mycelium will love the added moisture they get being partially covered by soil, leaf mulch, and radish leaf.

Insert beautiful salad bowl ecosystem.

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