Morell Mushrooms

I thought that I would start this as a where and when topic. I really don't want to know exact locations. But county, day, month, type of area found such as hard woods, an old elm, etc. Also Strains would be helpful. Many people such as my self would like an idea as to of where and when to start looking. I personally have had very little success and would like to learn more. Thank You for any assistance.

"seed" won't work.  They have a partnership with trees (elm and others).  When the tree dies, they sprout since they will not be able to stay alive without the tree.  Good chance they come back next year.  They can pop in odd places with no rhyme or reason.  They are fun and frustrating at the same time.

I found a bunch of morels that were already brown near my home for the first time.  I have left them from mowing but I wonder if I let them be, will they come back next year?  Should I mow them now that they are brown or just let them die away?  I would like to let some go to seed and then hope to have pickings for many years?  Anyone have any ideas about this?

Our patch of morels are up and we have around 20 or so in our patch.   We will begin eating a few of the larger ones tomorrow.  We are very excited about them.  

Adams County, Wisconsin.

Found 20 today.  Se minnesota.