@buckeye shroom, the cool temps won't bother them.
In 08....maybe a once in a lifetime season, March was unseasonably cool ,the first week of April it was in the 30's at night, warmed up, then back into the 30's the 13th-16th. This spring has been very similar. Cooler is better, stinks waiting around, but the years I've been frying shrooms in March, have all been bad ones.
Pretty cool site to check out....http://www.erh.noaa.gov/iln/lcdpage.htm You can go back and check out what made for a good/bad yr. weather-wise.
@Morelseeker, I'm not sure there are sub species of blacks. When I was young I remember dad coming home with what he would call brown sponge. I'm sure what he had were blacks that had not matured yet. They have different color stages as they mature. Had he left those alone, they would have eventually turned jet black at maturity.