A composition comprising a quantity of geraniol essential oil, a quantity of rosemary essential oil, a quantity of peppermint essential oil, and a quantity of grapefruit essential oil. A method for preparing a composition comprising combining a quantity of geraniol essential oil, a quantity of rosemary essential oil, a quantity of peppermint essential oil, and a quantity of grapefruit essential oil. A method for protecting a plant from insects comprising providing a composition comprising a quantity of geraniol essential oil, a quantity of rosemary essential oil, a quantity of peppermint essential oil, and a quantity of grapefruit essential oil; and applying the composition to the plant.