Approximately three pounds of lavender flowers are required to produce just 15mL of lavender essential oil.
It requires about 242,000 rose petals to distill approximately 5 mL of rose oil.
It requires 6,000 pounds of melissa plant to distill just a single pound of melissa essential oil. That equals around 63 pounds of melissa per 5mL bottle.
Nearly 3,000 lemons are needed to distill just over 2 pounds of lemon essential oil. This equals about 50 lemons per 15mL bottle.