Mushroom Growing At Home, On Logs (choosing log type and mushroom species)

Posted: March 16, 2018 in Forest Gardening, Low Maintenance, Perennial Crops, Planting / Companion Planting & Guilds, Stacking
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I have written some previous posts about growing Shiitake mushrooms on logs and this year I am making it a personal goal / mission to get more than one species of mushroom as well as more than one type of wood species. I realised that the best approach is to have a few options and different wood types so that you get fruit harvest in different stages as well as the possibility of quicker colonisation.

Below is a wood type to mushroom species reference chart so you can decide what to grow depending on available wood type.

Wood Mushrrom Chart.png

As you can see, Oak is the preferred log due to the amount of species that it can be inoculated with however, here in the UK Oak are a preferred species and are often protected with TPO’s (Tree Protection Orders) mainly due to their benefit to wildlife and as habitat. Another consideration is also what ‘Plug Spawn’ you can get your hands on, it’s all nice to see what can be grown using the above chart but you may not be able to locate a seller who has all of these varieties and you may even have to purchase from a number of different suppliers.

 

Growing Mushrooms on Logs – In A Nutshell

As short as possible, you get hold of recently cut / felled logs (tree surgeons are the obvious choice to contact as they are happy to get rid of logs for free – they usually have to pay to dump woodchip). Try find out how long it has been since the logs were felled, try to have your spawn arrive or be available for use no longer than 5-6 seeks after they were cut. (Mushroom Dowels or Spores can be stored in the fridge for a period of time depending on your appliance temperatures etc, generally most suppliers recommend no more than 2 weeks)

You drill holes in a diamond formation around your logs and hammer in pre-inoculated sterilised wooden dowels into these holes and seal with how wax (there are special waxes for this). The best method for keeping logs moist came to me from one of Sepp Holzers’ books (either ‘Holzer’s Permaculture’ or ‘Desert or Paradise’) – you merely pay attention to where the top of the wood is and what was / is the bottom, so before chopping make markings pointing up representing the top. You will plant the inoculated logs into the soil (up end up) to a certain depth and the log itself should naturally draw up moisture from the soil, otherwise if you forget for a short time to moisten the logs, you could kill the mycelium inside the log and everything would be a waste of time and effort.

More detailed information on the process will always be provided by the Dowel / Spore supplier, all you will need is a drill, hammer, place to wash the logs, place to do the drilling / innoculation and something to melt wax in and a brush, (some paintbrush bristles are actually made from plastic and will likely melt in the hot wax, get real horse hair brushes).

Within 1 year to 18 months, you should have full colonisation and the starting of regular fruiting, depending on log size, you could get fruit from each log for up to 8 or so years!!

The time to cut logs is before Spring so right now would not be the best time but if the logs are already cut (by a tree surgeon for instance) then you may as well use them (it’s best to avoid cutting trees in Spring due to the rising sap which causes excessive bleeding on Trees and Shrubs).

 

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