Organic Essential Oils also known as Bio Essential Oils are oils that are derived from plants that are not grown using pesticides, fertilizers or other chemicals.
Non-organic essential oils come from products that can use those type of chemicals. If you are worried about these type of chemicals in your essential oils, then you will want to look at this range of organic essential oils.

All of the essential oils are studiously selected, bought more often than not from primary sources, tested for purity and subjected to rigorous quality control standards.