Essential oil rosemary 10ml the chemical makeup of rosemary essential oil gives it renewing properties that can be both energizing and settling—particularly when you diffuse the oil. when you need to study for a big test, memorize your slides for a presentation at work, or just need to finish a project, diffusing rosemary oil can be helpful. in the essential oil diffuser of your choice, consider diffusing rosemary oil while studying to help maintain concentration. as the renewing, green aroma of rosemary oil wafts through the room, you’ll be able to focus on the task at hand. possibly the most common application for the rosemary plant is in cooking. fortunately, rosemary essential oil can be used as a substitute in your favorite rosemary-infused dishes. if you have a favorite recipe that calls for rosemary, you can easily add one to two drops of rosemary oil to meats or traditional entrees in order to add flavor or to support healthy digestion. rosemary is an aromatic evergreen shrub with leaves similar to hemlock needles. it is native to the mediterranean and asia, but is reasonably hardy in cool climates. it can withstand droughts, surviving a severe lack of water for lengthy periods.in some parts of the world, it is considered a potentially invasive species. the seeds are often difficult to start, with a low germination rate and relatively slow growth, but the plant can live as long as 30 years.