Colorado hopes to have in place by early next year some sort of labeling and inspection standard for marijuana sold commercially.

Medical-marijuana sales tax nets $2.2 million for Colorado this year

The Senate Bill S 510 Food Safety Modernization Act is not about people growing tomatoes, it is in preparation for the legalization of marijuana in the US.
This is going to be a billion dollar industry as has been shown by the trials of the medical marijuana laws and they need to make sure you can not grow your own.

(I guess I am the only one to see this because I have not seen or heard anyone else discussing it)