I don't know about easier, but it sure seems like more fun =) Growing cannabis is like growing any other plant, for the most part. /yawn
In my state, possession of psilocybin mushrooms is a felony of the lowest class (which means least jail/prison time), whereas possession of marijuana is a misdemeanor.
The loophole is that they have to prove you "knowingly and intentionally" possessed a controlled substance. With mushrooms this is pretty easy to get around, because there are many varieties of mushrooms that look just like the "magic" kind.
Seems to me that the penalties for drug possession should be uniform among drugs that are in the same schedule, but our laws never seem to make much sense. For instance, there's a stiffer penalty for possessing cannabis in a correctional facility than there is for selling drugs to schoolchildren. It's also a felony to bounce a check over $200, but a person working in a nursing home can beat up your grandma and that's a misdemeanor. Go figure.