Hallucinatory Mushrooms/ Marijuana growing wildly in Northern California?

I was going to be taking a trip to northern California soon and was wondering; do Hallucinatory mushrooms/ marijuana grow wildly in any parts of Northern California? and if so, is the level of said items produced/ found in little amounts, mild, or high levels? And if one were in the wild and were to plant Marijuana seeds, what do you think the outcome would be? as far as climate, location, etc? Hope you can help, thanks!!

first off mushrooms grow wild all over the place! but now is not the time you will be finding many mushrooms for hallucinatory purposes! second northern cali is a huge green community! perfect climate and great soil for growing mary jane!