Herbal incense is synthetic marijuana. This aromatic plant material contains synthetic chemical compounds added for the purpose of providing the effects of a controlled substance. Packaged or distributed in a loose, leafy, powder, or granular form then smoked or inhaled in an e-cig or vaporizer. Sometimes made into a tea and ingested. Examples are; “K2”, “Spice”, “Blaze”, and various herbal smoking blends.