Mushroom post 2 - detailed instructions

As I wrote in the first installment of the mushroom post, a few weeks ago I purchased an indoor mushroom kit (king oysters). I intend to propagate this kit, so that I can enjoy these mushrooms as long as I possibly can forever.

Reading up, I came across several approaches to mushroom propagation. I'm not 100% sure which will work best for me, so these are the experiments I will set up:

1. Stem butt propagation - to make new mycelium from a single mushroom, follow this video or the     step-by-step instructions in this webpage. Should work well for oysters, king oysters, and morels.     While in the video the mushroom is peeled and the stem is sliced, most websites (and the Russian       folklore) tell you to use the very bottom of the stem as-is, rather than peeling it. If this works, the       next step is just as described for the mycelium propagation approach below - new substrate,   

  humidity.           

  This step requires only corrugated cardboard and an air-tight container.

Morel anatomy. From http://www.waldeneffect.org/

2. Propagation of the mycelium - as opposed to the previous approach, where the actual fruiting body     of the mushroom is used, this approach uses the mycelium itself. This is the      

    stuff growing inside of the mushroom kit. Once the first flush of mushrooms passes, I will take out     some of the mycelium from the mushroom kit, and will inoculate a new container filled with     

    pasteurized substrate (see #3 for substrate choices). The general approach seems to be 500 g    

    spawn for every 2.5 kg of moist substrate (based on here). I will be using the bucket approach.   

    Here is another bucket tutorial, on coffee substrate. Don't have buckets? Use any other container 

    with existing holes (like a laundry basket) or pre-drilled holes, and place it in an intact tote, or even     a large plastic bag. Beautiful pictures with step-by-step instructions here, just click on the "+" 

    sign of each step. And yet another tutorial, covering growing mushrooms on straw, with step-by-       step instructions, using only plastic bags.

3. Substrate choices - from what I have read, oysters (and king oysters) will be happy on coffee    

    grounds and straw; shiitake (unless specifically the straw strain) will want a mix of hardwood    

    sawdust and straw, and cinnamon caps will require sawdust. 

Since I have available wood shavings, and should also be able to find straw, I'm planning on setting up four growing experiments: 1) stem propagation on corrugated cardboard, 2) mycelium propagation on coffee grounds, 3) mycelium propagation on straw, and 4) mycelium propagation on a mix of wood shavings and straw. In the next few weeks, I should be able to start all of these. I will be taking pictures to record progress on all four, we'll see how it goes!

A beautiful, and completely unrelated king bolete. But look how gorgeous it is! From photonaturalist.files.wordpress.com.

Growing mushrooms at home - post 1, general approach

I've been wanting to grow my own mushrooms at home ever since I have come across this picture.

Oyster mushrooms, growing in a bucket on a kitchen counter. From www.milkwood.net

Imagine that, gourmet mushrooms, available whenever you feel like it, fresh, and inexpensive! Growing up in Russia, mushrooms were a huge thing. Everyone picked wild ones in the fall, and most people could identify dozens of edible mushrooms. 

Long story short, a few weeks ago, a few of my friends and I bought mushroom kits for indoor growing; these were shiitake, cinnamon cap, oyster, and king oyster kits, from Wylie Mycologicals, a Canadian company.

The kits come with very simple instructions - for most, the buyer has to do nothing, until small mushrooms are seen inside the bag. Then, a slit is made in the bag, and the mushrooms are allowed to grow bigger. Once they reach desired size, they are cut off the bag and used as needed. The bag is then resealed, and another flush of mushrooms will be expected after a few days. This process is repeated, until the bag feels light, as the substrate feeding the body of the mushroom, the mycelium, is spent. 

King oyster kit. How cool is that? (image from http://static.webshopapp.com/)

The magic part is that if you keep feeding the mycelium, it should, if all goes right, keep on going forever. So, for the initial price of the mushroom kit, one should, theoretically, be able to have a lifetime of free mushrooms! After reading (a lot), these are the general rules:

1) The new substrate can be made of combinations of straw, used coffee grounds, cardboard, grain, wood chips, and sawdust (usually hardwood, NOT softwood), depending on the species - different mushrooms need different foods.

2) The substrate should be pasteurized, and the container, your hands, and all the tools should be thoroughly cleaned with soap, vinegar, or peroxide. Easiest approach for the substrate - fill a large pot with water, bring to 80C, take off the burner, add the substrate, and let it sit for 1-2 h (to pasteurize, it needs to stay above 60C for 1-2 h). Let the substrate cool, strain, and you're good to go.  

3) Humidity - lots and lots of it. The new substrate should be thoroughly moist, but not soaking - the mycelium needs air, and can drown if there is too much water. While the mycelium is colonizing the new substrate, humidity should also be high. 

                                       Oyster mushrooms, grown in a laundry basket. From http://velacreations.com/.

For details an step-by-step instructions on how to make it happen, check the next mushroom post!