Rosemary Herb Rosemary (Rosmarinus officinalis) is a well-known culinary herb. Dried rosemary leaves are a popular seasoning for food, adding flavor to soups, stews, meat, and fish. The smell of Rosemary is considered in some circles to be good for memory. Add one part rosemary to one part Bicarbonate of soda to make a pet-friendly Shake and Vac. Add to the carpets and furnishings brush into fabric then vacuum.