Essential oils are wonderful, highly concentrated drops extracted from A LOT of plant material. There are about 20 drops per ml in liquids close to the density of water. However, the size of a drop depends on the fluid and the dropper. For this, we are not going to deal with viscosity, but generally say there are 20 drops in 1 ml. Here is some fun, and not so fun facts.
Lemon (Citrus limon) – Dr. Jean Valnet, a pioneer in aromatherapy, estimated that it takes 1,500 lemons to produce one 1/2 kilo of lemon essential oil. 15 ml requires roughly 75 lemon peels.
Since there are about 300 drops in one 15 ml bottle, 1 drop of lemon oil = about a 1/4 of a lemon.
Lavender (Lavendula angustifolia) – According to Young Living, a 15ml bottle requires roughly 27 square feet of lavender plants. I am not sure if that is true or not, I hate to cite them but since I couldn't find any other data out there, I have to go with this.
Since there are about 300 drops in one 15 ml bottle, 1 drop of lavender oil = .09ft² or 83cm² of flowers. That is about 3 pounds of flowers.
Peppermint (Mentha x piperita) – 15ml requires roughly 1 pound (453 gm) of peppermint leaves.
Since there are about 300 drops in one 15 ml bottle, 1 drop of peppermint oil = about 0.05 oz. of leaves. So, 1 drop of