Why grow our own Marijuana if it is legal where we live?
I had thought about the amounts coming out of the buckets myself but several things did come to mind. They might be growing it for the same reasons some of us grow 'heirloom' tomatoes. Or why we choose seeds from custom breeders because we want a unique taste, either in tomatoes or weed. Or maybe a new seed stock meant to be grown in ponds or containers and they are testing it. Maybe a religious or cultural connection and they need a small amount for a family gathering that is important to them? Or maybe they are going to a performance or movie and need some "Rocky Horror" rice to throw during the proper scene on the screen or stage?
@Canachris, you could ask them about it if you see them outside on one of your walks.