Everything's a crime #___: If You Know Too Much About Poppies, You Can Lose the Farm (and Go to Jail)

At Reason:

Although Papaver somniferum is commonly used in gardening, floral arrangements, and food, it is also listed on Schedule II of the Controlled Substances Act as "opium poppy." That status usually means a substance can be produced and distributed only by people licensed to do so. But since the plant is widely grown in the United States by people ignorant of its identity as the source of opium, drug warriors generally do not bother with it.

Earlier post: Glenn Reynolds: Due Process When Everything is a Crime