Bing, The first mushrooms we found was April 26 last year. I sorta think it all depends on the area also. I found some in my backyard on May 11. My brother's wife grandma found some in her backyard 2 days ago and she lives in Hannibal,Missouri which is only 20 miles from Quincy but it is little south of here. I might go Sunday during raining and see I prob be wasting time but wouldn't hurt to check. Ground Temps are about right 63 degrees around the Adams County area but yeah your prob right about another week or so. Good Luck Everyone