Oregano was an herb which was indigenous to the planet Earth. It was used in many dishes to add flavor.
In 2284, James T. Kirk kept oregano in the same cabinet as dill weed. When trapped in the Nexus with Jean-Luc Picard, he asked Picard to bring him the dill, which he said could be found on the second shelf to the left behind the oregano. (Star Trek Generations)