Do you grow for any number of people aside from yourself? If so, yes, you need to sign up for an account to report what you're growing, how much has been harvested, where it goes, etc (read the link there for the full text and search for PRMG. As a trade, you are allowed to have up to 6 pounds (indoors) or 12 pounds (outdoors) PER plant of processed cannabis (36-72lbs per patient you're growing for). If you are a patient growing for yourself (AND you don't sell any extras to dispensaries), you don't have to keep records and the limits are the same (36-72lbs). Also note, that now medical marijuana grows like recreational grows can NOT be visible by unaided view in public spaces (e.g. it can't be visible from the sidewalk in front of your house). Unfortunately for me that means I need to tweak my medical garden (I'm currently pondering either doubling up the 10ft pvc hoop house to make it ~18 ft tall or digging it down a few feet, thankfully I have more than a month, but digging it would just suck so this weekend I look into expanding the hoop house upwards and seeing if I need more greenhouse sheeting.)
Additionally, unless you're applying to be grandfathered and get in, you can't have more than 12 mature medical plants in a residential area (so no growing for more than two patients if you're in an area zoned for residential). There are a few other changes that will effect you if you're a grower so please read the bill @
http://www.oregon.gov/oha/mmj/Pages/rules.aspx and/or contact a MJ lawyer (there are seveal, I like Bear Wilner-nugent in the portland area, but really, there are loads.)
Good luck!
