We offer our Oyster and Shiitake 'Logs' as well as White Button and Portabella Box kits.
Oyster and Shiitake like wood or wood like base. While White Button and Portabella like to live on a compost base.
Our Shiitake logs are made using a variety of ingredients with the main ingredient being oak sawdust. Our Oyster are grown on a log whose main ingredient is cotton seed hulls. At our farm the Shiitake and Oyster are kept in the same growing room - in the same environment.
The Oyster and Shiitake are kept in an environment with about 90% humidity, that has good indirect airflow to encourage evaporation and a temperature of between 62-68 deg F.
For you to achieve this with your home log you should build a humidity tent. You can do this in a couple of ways.
One is to have a wood frame that you cover with a garbage bag or clear sheet plastic such as painters plastic. The other is to take a box and line it with painters plastic. As in the photos below.
Light ~ Cutting windows on each side so you can watch the mushrooms grow is a good idea. It also gives the mushroom a little indirect sunlight which the oyster mushroom, in particular, needs. We leave a light on in our growing room to imitate this. If there is no light the Oyster tend to get "leggy". We suggest at least 12 hours of light a day. Either natural sunlight or a lamp. We left our kit in the house out of direct sunlight.
Airflow ~ To obtain the proper amount of air circulation you can cut small holes in your plastic or leave a couple of corners open to allow for airflow. We suggest to have the air holes toward the top of your tent and toward the base. (d)We used the flap from our box as a vent control. We would open it wider and close it up as needed.
Too much airflow will stunt or even kill your mushrooms and they will be hard and somewhat dehydrated in appearance and texture. Too little airflow and the mushrooms will be soggy/spongy, may grow a bacteria that will appear on it as spots, or even be slimy. You don't want to eat a slimy mushroom.
Humidity ~ To control humidity you will want to have a spritz bottle and spray the inside of your humidity tent with the bottle whenever you see that it is dry or evaporating quickly. If there is a little moisture on the sides of the tent you are good. If it is dry then you need to spray it more. How fast evaporation occurs depends upon the outside environment as much as it does on airflow. So, how many times you have to spray may change from one day to the next. (e) If you happen to have an air pump from an aquarium you can set that up with an air hose having an air stone on the end sitting in a jar of warm water. This will help keep the environment warm and humid. You can also set up a baking pan with water in it, place a block of wood in the center and the log on top of that making sure that the log is not sitting in the water. With the Shiitake you should spray the log directly morning and night as to prevent it from drying out.
As you can see the Oyster and Shiitake really like an environment that resembles a Spring day.
Below are photographs of an Oyster log kit and a humidity tent that we made using a cardboard box, packing tape, and painters plastic.