So by your logic, you snort rails of crystal meth mixed with LSD and when coming down you shoot heroin in your testicles,while drinking ether and funneling morphine in your asshole?
If he freely posted evidence of a crime on a public forum then it would be admissable in court. This would probably have been long after any statute of limitations and it would only be evidence of a past crime. He may still need to actually possess the plant for it to be a crime now.
As a general rule though, I would discourage anyone from posting pictures of themselves commiting a crime. It's just not a very smart thing to do.
In addition to plain text you can also add links to: - images - video pages - anything else Simply add a link just like this: http://i.imgur.com/fhfnG.gif and we will do the rest. We will transform all links into clickable links and if the link points to an image or a youtube video page we will open that image / video in a clean pop.