I'm in the Colorado Rockies right now and understand that there were a lot of porcinis growing up in the surrounding mountains at the end of last August. Before I commit to driving and hiking up to 10,000 feet, does anyone have any information on when the porcini usually grow? Would I be too early? There has been a good amount of rain here.
Go with someone who knows a little bit about mushroom. Around where I live - in Ontario - the porcinis come up in September. But it all depends on rainfall and temperature. And, of course, the Porcini Gods who, we all know, like a good joke. So even when all the conditions are perfect, they may not come up at all. Or, when you least expect it you'll suddenly be swamped with hundreds. No way - none - to know when they'll be up unless you talk to someone in the area who can give you a report.
As for Louise's poisonious cautionary note, she is basically right. Mushroom hunting requires some expertise. However, having said that, porcini mushrooms are some of the easiest to identify. So once you've seen them, they can be picked with some degree of safety as long as you are careful about it.
Porcini = Boletes in English. Look for pictures of the King Bolete, the safest mushroom for the beginner. Unmistakably, the underside of a bolete looks like a sponge, not the fins that most mushrooms have. Some boletes can make you sick but none can kill you. So says my long surviving mother.
Don't. Mushroom picking is not to be undertaken casually. There are too many poisonous types out there. If you don't even know enough about porcinis to know where to look, I'm guessing you don't know what to avoid.
If you don't believe me, then please google 'liver transplant and mushrooms'.