If Only These Were Edible...

After it rained this week, I noticed these two mushrooms growing in the yard.  They literally grew overnight and they are giant.  I put my spade next to it so you can see how giant it is!  Wild mushrooms grow so fast!  They seem to pop up overnight.  Too bad they are not edible.  They look gorgeous enough to eat.  Though I dare not to.  I don't know anything about identifying wild mushrooms but I do know that unless you can expertly identify them, they should not be eaten since most are poisonous. 

Then the next day, the cap expanded out making the mushrooms even larger.

This photo really doesn't do it justice.  It is so humongous.

Here is my boot next to it, just so you can get an idea of how large it is.  Being that it potentially is poisonous, does anyone know, can you put these into the compost??  Does that affect the compost at all?

Seeing these giant mushrooms form in my backyard makes me really want to get a kit and grow my own edible ones.  Maybe a Portabella mushroom kit like Allison uses in The Life of a Novice.  It grew a big box of mushrooms, so amazing!!  Or try this Oyster mushroom kit that Fern wrote about on Life on the Balcony. I'm also fascinated with getting spores and innoculating a log like how RuralRose grows Maitake mushrooms on Life Through the Cracks. AGWH grows Shitakes on logs on Grow Your Own Food.  I would love to try to innoculate a log and set it and forget it.  Since I can be a bit of a lazy gardener, this would be ideal!  The innoculated logs will continue to grow and regrow the mushrooms,  I love perennials so this would be totally sustainable and awesome.  Do you grow mushrooms?  Do you use a kit?  Or do you buy plugs and innoculate a log?