Growing Mushrooms – Preparation

Recently I waxed lyrical about growing mushrooms here at the house of GoG in this post titled The Great Mushroom Experiment.  

So, finally, I found the time together put one of the two kits that I bought to start growing.  I started off with the white button (Agaricus bisporus) mushrooms first, as I thought that may be the easiest to get a result.

I found the ingredients necessary for the kit, and got to it.

Growing Mushrooms

The essential ingredients

As I intended on making lots of mushrooms, because we eat them by the bucket load, I used 10 kg (22 lbs) of cow manure as the substrate.  Each packet of spores can inoculate 5 kg (11 lbs) of manure, so logically, I had to add two packets.  The essential ingredients are cow manure, compost mixed with garden soil, and of course the spores.

Growing Mushrooms - Marvellous Mushrooms

This is the packet of spores that I used.  Produced by Mr Fothergill’s, these mushroom spores are easy to use, and come with comprehensive instructions on the back of the pack.  I wasn’t left guessing when putting my kit together.

Box for growing mushrooms

I used a spare plastic tub that I rescued from my shed.  It was ideal as the instructions suggested a large plastic bag or crate.  As an added bonus, I still had the lid, which I think in the initial stages of growth will keep the moisture in the box.  Time will tell as to if this is a good thing.

Mushroom spore sprinkled on cow manure

Mushroom spore sprinkled on cow manure

Once I added the cow manure, I gave it a light spray of water so that it was just moist (not damp) then I sprinkled on the inoculated grains (looked like dried rice grains) on top of the manure.  Now while we are on the subject of manure, I may have made a mistake at this stage.

I accidentally picked up a bag of cow manure blend, instead of pure cow manure.  Upon opening the bag, I found bits of wood and all sorts of additives to the cow manure.  Not sure if this is good or bad, but there was still a lot of crushed manure in the mix.

Anyway, here is a close up of the grains.

Spreading in spawn

Grain inoculated with mushroom spawn

Now I gave it a big mix to make sure that the grains were thoroughly mixed through the manure blend.  It didn’t take too long, but I kept mixing for a few minutes more just to make sure.

Mixing spawn into cow manure

Mixing spawn into cow manure

With the spore mixed in, it was time to add a layer called a casting.  This is to separate the substrate from the surface (I think).

I mixed up 1:1 ratio of compost with seed raising mix and picked out any large bits of wood or the like.

Adding casting layer

Adding casting layer

It was about 2.5 cm (1 inch) thick, which I lightly patted down.  Then I moistened this layer with my spray bottle, and I placed the lid on top to keep in the moisture.  I made sure that I did not clip on the lid, it was just placed on loosely so that the mix could breathe.

Once I was happy with it all, Kim took this happy snap.

Gavin Webber growing mushrooms

As happy as a pig in mushrooms!

I stored it in the darkest place on our deck, out of direct sunlight.  The instructions suggest that it should be stored in a cool room, garage, shed, or under the house at a temperature of 15-20°C (59-68°F).  As it has been getting down to about 11°C (52°F) during the night, we placed a thick blanket over the box to provide some insulation, and to block out direct light.

Storing mushrooms in cool place

Storing mushrooms in cool place

It look very bright in this photo, but rest assured, it is quite dark in this corner of the deck.  This is the spray bottle that I have been using over the last week to keep the casting moist.  I found the pump at one of those $2 shops, and it screws onto an old soft drink bottle.  Great little find, as once pumped with air, it provides a fine mist of water.  Perfect for this sort of growing, I believe.

Anyway, I have been looking after the mushrooms for about a week now, and no sign of activity on the surface.  With that said, the instructions state that mushrooms may appear within as little as 20 days, so I am not even close to that yet.

So now we wait.  Looking forward to writing about the first flush of growth!

Tomorrow I will be preparing the shiitake mushrooms, so watch out for a post about them soon.

 

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