👉 Pterostemon is a genus of flowering plants in the family Thymelaeaceae, commonly known as thyme or dill. They are native to Europe and Asia from China through Siberia into North America. These plants are often grown for their culinary uses such as thyme tea, thyme sprigs, and thyme oil. Thyme, also known as dill, is a type of herbaceous perennial that grows up to 2 meters in height and blooms in the