I'm in Spain here and the law is INCREDIBLY VAGUE. Mind you, I am not using but I love growing. Seed stores EVERYWHERE here, you can get seeds for €1
We were in the firm belief that growing for personal use (and if not visible to the public) is "legal", or so at least many websites said. So we grew 7 plants recently in my greenhouse on the balcony.
Fast forward (or back, if you will), in May. Door bell rings, it's the GUARDIA CIVIL. (sort of military police here in Spain)
Make a long story short, they said 7 plants are "too much", so they took them but fortunately I could keep my custom made lights and everything else. (The lights alone cost me like €1000 ...)
Had to go to the station, they took a report etc.....but as it looks, it's probably never going anywhere and likely dropped. (This was back in May and we hadn't heard a thing from them).
Anyway...I am growing now 1 (yes ONE) plant for wife for medical use.
Still baffled how they found out..they said "a neighbor complained because of the smell", which was retarded since the plants were not even in flower.
Edit: Here in my area in Spain, there is HUGE activity by "commercial" illegal growers and also huge "gang" activity of weed getting smuggled from here to the UK and elsewhere. Commercial growing and selling of course is highly illegal and has a mandatory prison sentence. When the cops where here in our house, we had the impression that they realized at some point the triviality of it...so they left and didn't even want my lights etc.