Poppy seeds are a powerhouse of pain relief properties which has a calming effect that may gently induce a relaxing sleep. Either wait until the flower heads are completely dried or pick them and hang Hill Tribes and the cultivation of opium Green Trails From Poppy To Heroin ~ Step 2: Harvesting Opium Wide Angle PBS Philadelphia CBP officers seize nearly 300 pounds of dried opium poppy pods from Spain U.S. Customs and Border Protection