Now no need to go hunting for lemongrass oil, when you can actually make it at home. If you think it may take quite a lot of effort, then you are wrong. This procedure is quite simple, and is less messy. The lemongrass is a multipurpose plant, that is used as a medicine, owing to its therapeutic properties. Its oil is extracted from the stalks of the plant, by adding a few other ingredients, and is also used in food to add a zing. It is also used as a mosquito repellent.