Cannabis is native to India, and is an introduced species in North America. It was originally grown here to make hemp ropes, and some of the seed escaped. Cannabis does still grow wild in India though, and there are no attempts to eradicate it there.

Most cannabis seeds you'd get have been bred for large potent buds, and would not do so well in the wild. If you want to get cannabis seeds that would do well in the wild, see if you can get ahold of that wisconsin ditch weed seed.