This is the second of two posts describing log inoculation with sawdust spawn. The first, covering tools and materials, can be found here

So now we have assembled our tools and materials and we are ready to go. The basic workflow is to drill holes in a log in a diamond pattern, fill each hole with sawdust spawn using a special inoculation tool, and cap the holes with edible wax.

  1. Melt your wax

This takes a minute so I would start it first.

  1. Drill holes

Here is a photo of a finished log. The holes are in a diamond pattern roughly 3 inches (~8cm) apart. The easiest way to accomplish this is to drill all the way down the log at a 6” interval, then move over a few inches and drill all the way down the log at an offset.

  1. Fill the holes with spawn

Open the bag of spawn, and firmly jab the inoculation tool into the spawn so when you pull it out it is flush:

Line up the inoculation tool with a hole, push down firmly on the plunger and press the spawn into the hole:

You will want the top of the spawn to be flush with the log because otherwise when you go to wax it will pull it up. If it sticks out a bit you can jam it in with your finger or use the tip of the tool with the plunger depressed.

Repeat this with the top surface of the log. The spawn is jammed in there tight so you don’t have to worry about it falling out, but I still prefer to do one side at a time.

  1. Wax

Now it’s time to apply the wax. Dip your tool of choice into the hot wax and seal each hole generously.

If you have a second person a really nice work flow is for one person to put the spawn in while the second follows behind with wax.

Turn the log over and repeat until all holes are filled and sealed. Check carefully as open holes are entry points for contaminants. This is the main reason I prefer red wax.

I like to wax the ends of the logs as well when they are finished, as well as any areas with missing bark. This is probably overkill.

  1. Stack and wait

Stack your logs (see title pic) in a cool dark place (think forest floor) and allow them to colonize for 3-6 months. When you see mycelium colonizing the ends you will know they are ready to be re-stacked or buried, depending on your target species. I will post pictures of a stack shortly but am rate limited at the moment