The crackdown begins September 1 when a new state law against the substances called "K-2" and "Spice" goes into effect.
The substances are already banned nationwide by the Drug Enforcement Agency and in Texas by the state's Department of Health Services. Sugar Land police say they've been talking to business owners in the city telling them to remove synthetic marijuana from their shelves, or they will face charges.
Police say substances such as K2 are mixtures of herbs and spices sprayed with a synthetic compound that is chemically similar to TCH, the psychoactive ingredient in marijuana. They are oftentimes packaged and sold as incense at local stores and abused because they mimic the high of marijuana.