Essential oils can be harmful to plants if they are used in large amounts or if they are applied directly to the plants. Essential oils are highly concentrated plant extracts that contain the natural aroma and flavor of the plant from which they are derived. They are typically extracted from the leaves, flowers, stems, roots, or other parts of a plant using a process called distillation, which involves steaming or pressing the plant material to extract the oils.
Essential oils can be harmful to plants because they can damage the plants' cells and tissues, leading to irritation, inflammation, and even death in some cases. It is generally recommended to avoid using essential oils directly on plants, as they can be toxic if ingested or if they come into contact with the plants' leaves, stems, or roots.
If you want to use essential oils to protect your plants from pests or diseases, it is generally recommended to use them as a preventive measure, rather than as a treatment for an existing problem. You can try diluting a few drops of an essential oil, such as tea tree oil or peppermint oil, in a carrier oil, such as almond oil or coconut oil, and spraying the mixture onto the plants' leaves as a natural pest repellent. It is important to use caution when using essential oils on plants, and to follow the recommended dosage to avoid causing harm to the plants. If you are unsure about using essential oils on your plants, it is recommended to consult with a healthcare professional or a trained aromatherapist.