White button mushrooms

Can you grow white button mushrooms in cedar sawdust

Hi, Don

Welcome to the forum.

I can't answer your question though I did find some threads that might help you or others who want to grow Agaricus bisporus Fungi;

2. Button mushrooms are among the most difficult of all mushrooms for amateurs to grow. They have a very narrow temperature and humidity range for growth and fruiting that is difficult to duplicate without spending a lot on a special building or chamber to grow them in.
3. Button mushrooms require a high quality horse or cow manure compost that is well-pasteurized and free of any contaminants. This is difficult for beginners to make. As far as I know, they simply won't grow on just chicken manure or cardboard. (However, chicken manure is sometimes added as a supplement to the high quality horse or cow manure compost that is used in Button Mushroom production.)

https://permies.com/t/36233/Chicken-Litter-Mushrooms#282960

https://permies.com/t/40221/mushroom-experts-champignon-mushrooms-agaricus

https://permies.com/t/53916/Carbon-Nitrogen-Ratio-Growing-feild

https://permies.com/t/44204/Growing-mushrooms-mixed-sawdust

I hope you will let us know how this turns out for you.

I was given a load of button mushroom spent substrate for my garden last week, and the mushroom producer said it's a mix of chicken manure, wheat straw, wheat bran, and coco coir (if I'm remembering correctly).