Spice Aisle of any grocery store. Done that twice but I don't recommend it; From a legal standpoint it's not like having a Cannabis plant, they get actually pissed because they don't realize how many acres or hectares of that plant you'd need to actually mix up Heroin and that's exactly what they seem to think everyone would grow it for. I was a young guy when I did that and knew literally nothing about growing it. Still ended up with some of the most beautiful flowers I've ever seen! Silky to the touch, and the smell.... But yeah those days are over for me LOL, my dumb ass out in the garden with a butter knife and a pin slicing pods and leaving them in the Sun for a few hours until it's gooey, then peeling it off. Don't get me wrong, it's good! But that kinda thing isn't "cool" with any type of cop haha. Sometimes I laugh about that cause even though I only had a few plants, they would NOT have cared. works with grocery store spice rack aisle because the ones people eat on food are Persian Blue Papaver Somniferum, and I've also grown 3 other species of Papaver Somniferum but I really don't remember the "strains" anymore as it's been years and years.